"""iHoT] riiUCEEDINGS OF THE NATION AE MUSEUM. 627 



tioii between those of ^. tivniatniu and B. laterale and part like that of 

 B.JlmieUiforme. Its eliaracters ally it most nearly to the last named, 

 bnt its appearance is quite distinct. 



The scales are in seventeen rows, and there are ei^dit superior labials. 

 The posterior part of the frontal is oidy half as wide as the superciliary 

 plate at the same point. The temjmral scales are 2-1-2. The fourth 

 and lifth labials bound the orbit below. The loreal is Ion<:er than hi^h. 

 The postgenials are a little larger than the pregenials. The muz/de is 

 not decurved, and is moderately protuberant viewed in protile ; from 

 above it is elongate wedge-shaped. The tail is long, entering the total 

 length in the si)ecimen before me (No. llJSl) thiee and one-seventh 

 times. 



The general color is a light-brownish elay-eolor (in spirits), the free 

 border of each scale with an elongate whitish si)ot on each side. The 

 color becomes darker anteriorly, so as to be on the anterior fourth of t he 

 length a plumbeous green with the top of thehea<l ligiit brown. There 

 are no markings on the superior surface of this region, but the sides arc 

 striped, the stripes disappearing on the second fourth of the length of 

 the body. These stri[)es are bounded by a brown line on the middle of 

 each scale of the second and third rows. Between these the color is 

 like that of the back, while the adjacent halves of the third and fourth 

 rows are light yellow. A fainter brown line runs along the middle of 

 the tirstrow. Belly and throat immaculate light yellow, except a few 

 puncta' along the ends of the lirst dozen gastrosteges. Middles of nasal, 

 loreal, preocular, and postocular plates, yellow. Sn])erior labials yellow, 

 with a blackish superit)r border extending from the rostral plate back. 

 Temporal region, like the top of the head, iriiniaeulate. A few black 

 specks on the genial margins of the inferior labials. 



Gastrosteges liOl ; amd 1 ; urosteges i;3l4-. Total length (No. IJKSl) 

 1185 millimeters; of tail (extremity wanting) 375 millimeters. 



A young specimen (No. 8434) is interesting as showing the constancy 

 of the color characters as compared with those of corresponding age of 

 the B. Uvniatum. and with the adult B. schottii and 7>. laterale. hi the 

 first place the stripes are much more distinct in this specimen than in 

 the adults, as is the case also with the />'. ((rniatum. Moreover, they ex- 

 tend farther along the length of the body, being traceable on the mi«l- 

 dle third, though they are wanting posterior to it. The stripes are: a 

 yellow one on adjacent parts of the third and fouith rows, bounded be- 

 U)w by a brown one on the adjacent parts of the second and third lows. 

 A yellow stripe succeeds on the adjacent parts of the tirst and second 

 rows, whih' another and paler lirown stripe runs on the adjacent parts 

 of the lirsl row and the extremities of the gastrosges. This pattern, it 

 wil! be observed, is (piite dilferent from that which obtains in any of 

 the other striped species, as the B. inniation, oDiatutHy seliottii, or la- 

 terale. The head is entirely uniform greenish slatecolor al»ov«' and on 

 the temples. The superior labials arc yellow, the posterior bounded 



