Female #1 tunneled from under the shelter to the bottom of the HERPETOLOGICAL HUSBANDRY soil and laid a second egg on 17 May. The first egg laid by this female remained on the soil surface and failed to hatch. Female #2 also dug a tunnel and laid three eggs on 18 May. Neither female Notes on the Captive Reproductive Behavior of accepted mealworms or crickets offered as food. the Asiatic Four-lined Skink, Observations of both females and their eggs were made through the transparent floor of the cages, or by carefully removing the Eumeces quadrilineatus shelters. Both females used their bodies to surround their eggs throughout incubation. Although they occasionally shifted their AKIKO HOSONO position within the tunnels, they remained under the soil and never and appeared on the surface until their eggs hatched (see below). TSUTOMU HIKIDA When Female #1 was observed outside her tunnel on 27 June, Department of Zoology, Graduate School of Science, Kyoto University, we examined her egg and found a hatchling (Hatchling #1). Female Kitashirakawa, Sakyo, Kyoto 606-8502 Japan #2 emerged from the soil on 8 July, whereupon we excavated e-mail (AH): [email protected] three hatchlings (Hatchlings #2, 3, and 4), while Hatchling #4 Eumeces quadrilineatus ranges through southern China, was just struggling to extricate itself from its egg. Assuming that Vietnam, Cambodia, and Thailand (Taylor 1935). It has been the females emerged upon the hatching of their eggs, as is the grouped with the American four-lined forms (E. gilberti, E. case of other congeneric species (e.g., E. elegans: Kato and Ota lagunensis, and E. skiltonianus) as the E. skiltonianus Species 1994), the incubation period of the second egg of Female #1 should Group (Lieb 1985). Tanner (1957) observed reproduction of E. be 41 days; the three eggs of Female #2 hatched in 51 days. skiltonianus and presented data for the number of eggs per clutch, Various measurements of adult females and hatchlings are egg size, and hatchling size in that species. Based on counts of presented in Table 1. Although hatchlings were maintained in the oviducal eggs, Punzo (1982) reported clutch sizes for E. gilberti enclosures in which they hatched, all died within three days. and E. skiltonianus. However, there are no published accounts of reproduction in E. quadrilineatus. This report, based on captive Acknowledgments. -We thank H. Ota and J. Kato for reviewing the observations, is the first published information regarding the manuscript, and S.-L. Chen for collecting the lizards. reproductive traits of this species. Two females, collected from Cheung Chau Island, Hong Kong, LITERATURE CITED on 25 April 1997, were brought back to our laboratory, labelled KATo, J., AND H. OrA. 1994. Notes on the breeding of the five-lined skink, #1 and #2, and set up individually in small, round, plastic cages Eumeces elegans. Acta Zool. Taiwan 5:77-81. (10 cm [length] x 6 cm [height]) with paper substrate and a water LIES, C. S. 1985. Systematics and distribution of the skinks allied to bowl. On 14 May 1997, Female #1 laid one egg with a soft Eumeces tetragrammus (Sauria: Scincidae). Nat. His. Mus. Los yellowish-white shell, to which she paid no attention. Female #1 Angeles Co. Contr. Sci. 357:1-19. and the egg were transferred to a larger transparent plastic PuNzo, F. 1982. Clutch and egg size in several species of lizards from the rectangular cage (20 cm [length] x 13 cm [width] x 13 cm [height]). desert southwest. J. Herpetol. 16:414-417. Female #2 was also moved to a cage of the same size. Each cage TANNER, W. W. 1957. A taxonomic and ecological study of the western was furnished with 5 cm of soil, a broken flowerpot for shelter, skink (Eumeces skiltonianus). Great Basin Nat. 17:59-94. TAYLOR, E. H. 1935. A taxonomic study of the cosmopolitan scincoid and a water bowl. The soil was moistened with water spray every lizards of the genus Eumeces, with an account of the distribution and third or fourth day. Ambient room temperature varied between relationships of its species. Univ. Kansas Sci. Bull. 23:1-643. 23°C and 25°C throughout the observation.
TABLE 1. Measurements (in mm and g) of the females and hatchlings of Eumeces quadrilineatus, taken immediately after hatchling. SVL = snout-vent length, HL = head length, HW = head width, TL = tail length, and BM = body mass.
SVL HL HW TL BM
Female #1 74.8 13.8 7.8 75 5.02
Female #2 73.2 13.7 7.8 55 5.07
Hatchling #1 25.9 6.3 3.6 36 0.33
Hatchling #2 24.6 5.6 3.7 34 0.30
Hatchling #3 25.1 6.6 3.6 33 0.30
Hatchling #4 24.9 6.5 3.8 35 0.32
Hatchling means 25.1 6.3 3.7 34.5 0.31 Rhacophorus pardalis. Illustration by Dan Erickson.