252 APPENDIX. — REPTILES. 



trunk, tapering. Rostral shield rounded above, just reaching 

 the surface of forehead; anterior frontals much smaller than 

 posterior ones, all with convex hinder edge ; vertical very narrow 

 and elongate, with concave lateral edges; superciliaries much 

 broader and larger, spheroid, projecting over the eye ; occipitals 

 moderate, rounded behind; one nasal, pierced by the nosti'il; 

 one loreal; one larger anterior ocular, with a very small one 

 below; three posterior oculars; eight to ten temporal shields, 

 two of which are in contact with the oculars; eight upper 

 labials, the third, fourth and fifth of which come into the orbit ; 

 the sixth and seventh are much larger than the others, and 

 sometimes united. The first pair of the lower labials forms 

 together a suture behind the medial one, and the same is the 

 case with the second and third pair, thus suppressing the chin- 

 shields ; there is a pair of narrow chin-shields only behind the 

 suture of the third labial pair. Scales rhomboid, in seventeen 

 rows; anal entire. Dentition as in Ps. pulverulentus. Head 

 above reddish white, with symmetrical dark purple markings on 

 the forehead and crown ; occipitals only a little spotted ; imme- 

 diately behind the occipitals commences a broad dark purple 

 band, occupying the whole neck and the medial part of back, 

 reaching to the tip of tail, and interrupted by pairs of reddish- 

 white rounded spots, becoming obsolete towards the middle of 

 the length ; on each side of this dark band is a narrower reddish- 

 white streak, beginning from the back edge of eye and ending 

 on the tail ; the sides are irregularly darker variegated, and there 

 is a dark streak from the tip of the snout through the eye to the 

 angle of mouth ; belly white, with small triangular black spots, 

 the lateral of which are larger and situated in a line. Length of 

 cleft of mouth |"; length of tail 4"; total length 17". 



Page 142. Dasypeltis scabra. 

 i. Adult. Africa. From Mr. Jamrach's Collection. 



Page 156. Dryophis acuminata. 



Add to the synonymy : Dryophis vittatus, Girard, in U. S. 

 Naval Astron. Exped. p. 211. pi. 36. 



Page 171- DiPSAS fusca. 

 h. Young. Australia. Presented by Sir J. Richardson. 



Page 180. Leptognathus catesbyi. 



Variety : Spots black, and so large as nearly to suppress the 

 white interspaces. 



g. Adult. Guayaquil. From Mr. Fraser's Collection, 



