200 PROCKEDINGS OF THE ACADEMY OF [1890. 



black. An elongated, triangular dark patch on the occipitals, 

 pointing backward and a small dark blotch just below it on each 

 side of the neck. A dark bar running back from the eye on the 

 upper margin of the labials. The foi'epart of the head and the chin 

 and throat much maculated with black. 



Total length of specimen 532 mm. (21 in.). Length of tail 50 

 mm. (2 in.). 



The general coloring of the specimen is much like that of Rhino- 

 chilis lecontii, but the generic and other characters render it im- 

 possible to confuse it with that or any other North American species. 

 The fact that but one specimen has yet been collected in a region 

 so comparatively well known as northern Florida renders it probable 

 that the species is of extreme rarity. 



The specimen is hei-ewith presented to the Academy. 



