470 PROCEEDINGS OF THE NATJOXAL MVSEim. vol.xxih 



two pairs of reovilar parietals of siibo({uul size, the one immediately 

 behind the supraocular frequently heiny' even larger than the median 

 pair, while in the true /:'. inoi')i<i1>is from Porto Kico the median pair, 

 if not entirely split up into small shields, is nmeh larger than the 

 one on each side behind the supraoculars. 



There is also a slight, though a})|)arently constant, ditference in the 

 number of ventrals, since in eight .Jamaican specimens of E. snhjiarns 

 I count, or rind recorded, 274 to 286 ventrals, while the corresponding 

 figures in eleven Porto Rican h\ !iioi'n(ifux are 2(51 to 271. 



