; The reproduction of a population of Psammodromus hispanicus was studied on a coastal sand area of NE Spain and compared with other populations. Sexual maturity is reached in the first spring, and there are no subadults. Reproductive activity occurs in March to July. The beginning of reproduction depends on the spring temperature increase but the end is produced by an endogenous rhythm. Eggs size, clutch size and length of the hatchlings are very close to those of other populations. The major difference is that a second clutch can be laid by the largest females. This is the first such record in the species.