310 PROCEEDINGS OF THE ACADEMY OF 



half of the body. They are without pores on the side, but are uniporous on 

 most of the rows. All the rows except the inferior, are carinate. On the 

 middle and posterior part of the length, that of the vertebral becomes obso- 

 lete, and then vanishes, while those of the two on each side, especially the 

 superior, become very strong. Tail entirely smooth. Gastrosteges 180. Anal 

 divided ; urosteges 176 ; the first are strongly turned up at the sides, and not 

 angulate. 



The teeth increase in length gradually to the posterior end of the maxillary 

 bone, where the last is abruptly the largest; they are strong, and eleven in 

 number. 



Color everywhere bluish green without metallic reflection, the keels of all 

 the scales black. 



This beautiful species was sent to the Smithsonian Institution by its corres- 

 pondent Henry Hague, near Peten, Guatemala, 



Leptodira pacifica. 



Scales in nineteen series, biporous, all nearly equal. Body cylindric, neck 

 little compressed ; head short, broad. Oculars 2 — 2, loreal higher than long. 

 Superior labials seven ; eye over third and fourth. Temporals I — 2. Frontal 

 longer than broad, with straight parallel borders ; occipital elongate, truncate 

 behind. Internasals long as wide, one-third prefrontals. The superior pre- 

 aud postoculars are both much larger than the inferiors Gastrosteges 164, 

 anal 1 — 1, urosteges 61 pairs. Length of head and body 7 in. 3 1, of tail 

 2 in. 



Color above bright rose-brown, with four series of blackish-brown, very small 

 spots, of which the median pair forms usually a short cross-bar by their 

 union ; in this case they extend over five series of scales. The lateral spots 

 are on the fifth row, and cover half a scale. A broad black bar across the 

 nape ; a short brown line behind each eye, and a number of dots on the 

 crown. Below uniform cream color. 



The above description is derived from a young animal. It was given to the 

 Smithsonian Institution by its correspondent, G. BischofF, and sent to me for 

 examination. In its characters it approaches the species of Hypsiglena [Pseu- 

 dodipsas Peters,) but has a grooved maxillary tooth and double scale-pores. It 

 has different labials, scales and coloration, from the L. annulata. 



Leptodira personata Cope, sp. nov. 



Body slightly compressed, neck contracted, head elongate, narrowed in front 

 of ihe orbits. Scales equal, biporous, in twenty-three rows. Internasals 

 broader than long, frontal elongate, with parallel sides, superciliaries narrowed, 

 occipitals narrowed, elongate, rounded behind. Temporals 1 — 2 ; oculars 1 — 

 2, anterior barely reaching frontal ; loreal long as high. Superior labials 

 eight, fourth and fifth in orbit. Geneials equal. Gastrosteges 173, anal 1 | 1 | , 

 urosteges ? (tail mutilated). Length head and body, six inches. 



General color cream, with broad black cross-bands on the dorsal region. 

 These extend from the gastrosteges anteriorly, posteriorly from the first series 

 of scales. There are twenty-three between nape and vent, which are wider 

 than the intervals. Top of head except upper labials entirely black ; a broad 

 yellowish collar. Below immaculate. 



The Smithsonian collections have received this species from Mazatlan, 

 Western Mexico, from G. Bischoflf. It was sent with the Leptodira pacifica, 

 Agalychnis dacnicolor Cope, and Holbrookia b i s c h o f f i Cope and other 

 species. 



Phimothyra decurtata Cope. 



This species resembles considerably the species of Lytorhynchus Peters, 

 which genus in Africa represents the American Phimothyra. They differ only 

 in dentition, the former being diacranterian, the latter rather coryphodont. 



This species is distinguished by many features. The head is shortened and 



[Nov. 



