1876.] 409 [Garman. 



middle of the body. Between the inframaxillaries and the anterior 

 abdominals there are five series of small scales. Abdominals 287 ; 

 subcaudals 25 pairs. 



Elaps eorallinus (L.) Neuw. 



Large and small, of the variety circincdis D. and B. Tips of 

 tails and muzzles black — color not extending on the inframaxillaries. 

 Ends of the scales black in the red rings, not in the yellow. Adult 

 with sixteen black rings on the body, three on the tail ; young with 

 eighteen on body, and three on tail. Between inframaxillaries and 

 anterior ventrals there are two small scales on the throat of the 

 larger, three on that of the smaller. Abdominals and subcaudals of 

 the former 221 -f- 39 pairs; of the latter 223 -\- 39 pairs. 



The transition from eorallinus through circinalis and Filzingeri to 

 E.fulvius is so gradual as to make it necessary to consider them as 

 varieties of a single species. If so considered, the range of this 

 species from Virginia to Brazil gives it a greater distribution than 

 that of any other American reptile. 



BATRACHIA. 



Cystignathus ocellatus (L.) Tsch. 



In addition to the specimens belonging to this collection there are 

 at hand others from various points between Central America and Uru- 

 guay. Those from the Isthmus are more olive, those from the lower 

 Amazon more brown, and those from the southern localities and 

 Villa Bella more grey. The disposition of the spots is the same 

 throughout, but the amount of variation in shapes is infinite in the 

 same vicinage. Young examples are light in color and slender in 

 form ; the head is narrow, the snout pointed, and there are four or 

 more longitudinal folds in the skin of the body ; later in life the 

 ground color darkens, some of the folds disappear, the head widens 

 and thickens at the shoulders, the vomerine teeth approach more 

 closely and the figure becomes stout and heavy. Just above and 

 behind the upper arm in large specimens traces of the glandular 

 growth may be discovered; from this it gradually extends over the 

 side. On dissecting, the structure is found to be made up of numer- 

 ous round-ended piles or cylinders set up on end close together upon 

 the skin immediately within the epiderm. It does not appear until 

 the adult stage is reached, and in all probability is superinduced by 

 the excitement attendant upon coupling. In the season males are 



