NATURAL SCIENCES OF PHILADELPHIA. 211 



as the E. lemniscatus. It is evident from the above description 

 that it is distinct from the E. mipartitus^ D. and B., with which 

 Giinther is disposed to unite it. See Am. Magaz. Nat. Hist., Sept. 

 1859. Prof. Jan's figure does not represent the species well, having 

 the black rings too wide ; it must have been taken from a young 

 animal. 



COLOBOGNATHUS DOLICHOCEPHALTJS, Cope, sp. nov. 



Scales in thirteen longitudinal series carinate to the urostesres 

 on the tail, to the first row of scales on the posterior, and to the 

 second row on the anterior part of the body. Head elongate, 

 conic, scarcely distinct from the neck. Internasals very small, 

 prefrontals verj'' long. Frontal wide, openly angulate in front, 

 with superciliary margins distinct from the parietal ; latter plates 

 well developed. Superior labials six, second bounding nasal and 

 loreal; third a little, fourth largely in eye, fifth longer than high, 

 in contact with parietal. One temporal above sixth labial, which 

 is higher than long. Inferior labials six, second and third minute, 

 fourth long and narrow. Postgeneials small, separated by a 

 scutum. Oculars 0-1. Rostral elevated, not separating inter- 

 nasals. Tail slender, 5.15 times in the total length. Gastrosteges 

 131, anal 1, urosteges 39. Color of body above, and entire tail, 

 black ; a series of large distant red spots on each side, which often 

 meet above, forming half-rings. These disappear on tail and neck. 

 Below red, lower lip and chin black. Length, 12-14 inches. 



San Jose, Costa Rica. Dr. Van Patten. 



This species diff'ers from the C hojfmannii^ Pet., in its more 

 numerous labial shields, keeled scales, coloration, etc. From the 

 (7. nasalis, Cope (Gatostoma, olim), in the fewer scale-rows (the 

 latter has seventeen), the coloration, etc. 



COLOBOGNATHUS BRACHYCEPHALUS, Cope. 



Scales in fifteen longitudinal rows, smooth, except a faint trace 

 of cariuation near the posterior part of the body. Head flat ; 

 rather wide behind, and distinct from neck. Postgeneials small, 

 separated by a scale. Rostral moderate, internasals not minute, 

 prefrontals nearly broad as long. Frontal broad convex in front, 

 superciliary and parietal sutures nearly continuous. Oculars 0-1. 

 Superior labials six, two behind orbit, sixth longer than high, sur- 

 mounted by one temporal ; fifth longer than high, bounding 



isn.] 



