Reproduction in the Speckled Racer, Drymobius Margaritiferus (Serpentes: Colubridae) from Mexico and Central America‪.‬

Abstract.--Reproductive tissue was examined from 100 preserved specimens of Drymobius margaritiferus from Mexico and Central America. Males exhibited a prolonged period of sperm production encompassing the four seasons of the year. The smallest spermiogenic male measured 380 mm SVL and was from Costa Rica. Females were reproductively active (enlarged ovarian follicles or oviductal eggs) during the four seasons, suggesting an extended period of reproduction. There was no evidence (oviductal eggs with yolk deposition in progress in the same female) to indicate females produce more than one clutch of eggs per year. The smallest reproductively active female (enlarged ovarian follicles 12 mm) measured 440 mm SVL and was from Costa Rica. Mean clutch size (n = 24) was 5.1 [+ or -] 1.5 SD, range = 2-8. **********