in the Collection of the British Museum. 23 



Specimens of this snake were found by Major Burton, H. M. 

 Consul at Fernando Po, during an excursion on the Camaroon 

 Mountains. 



Leptodira leucocephala. 



Anal entire ; scales in nineteen rows. Posterior maxillary tooth 

 longest, grooved. White {in spirits), with large rhomboid black 

 blotches ; head and nape of the neck white, with black dots. 



One specimen, sent by Dr. O. Wucherer from Bahia. 



Head rather broad and depressed, distinct from neck ; body 

 compressed, with the ventrals angularly bent upwards ; tail 

 slender. Snout rounded, depressed, short ; eye of moderate 

 size, with elliptical pupil. Rostral broader than high, reaching 

 the upper surface of the head j anterior frontals nearly square, 

 one-third as large as the posterior, which are slightly bent down- 

 wards to the side of the snout ; the vertical is pentagonal, much 

 longer than broad, but shorter than the occipitals, which are 

 rounded posteriorly. Nostril between two small plates ; loreal 

 a little longer than high ; one anterior and two posterior oculars. 

 Eight upper labials, the third, fourth, and fifth of which enter 

 the orbit. Eight scale-like temporal shields, the two anterior 

 of which are in contact with the oculars. Five of the lower 

 labials are in contact with the chin-shields. Scales in nineteen 

 rows, each of those on the back with two grooves. Ventral 

 shields 230; one anal; 114! subcaudals. 



Ground-colour white, with twenty-five large, irregularly rhom- 

 bic black blotches ; they extend downwards on the ventrals ; the 

 first is behind the nape ; those on the tail are rather irregular 

 and partly confluent ; the head is white, with small black dots, 

 those on the temple confluent into an obsolete band. 



Total length 31^ inches. 



Length of head f 



,j trunk 21 



taU 9 



Brachysoma diadema. 

 Calamaria diadema, Schleg. Ess. ii. p. 35. 

 Flaps omata. Gray, Zool. Misc. p. 55. 

 Brachysoma diadema, Fitz. Syst. Rept. p. 25 (not Gthr.). 

 Furina diadema, Dum. & Bib. p. 1239. 

 Rabdion occipitale, Girard, U.S. Explor. Exp. Rept. p. 120. 

 Glyphodon ornatus, Gthr. Colubr. Snakes, p. 210. 



I have formerly confounded this snake with Furina bimacu- 

 lata, D. & B. The genus, which has been characterized by my- 

 self with the name of Glyphodon, is valid, but must bear the 

 name of Brachysoma ; whilst for Brachysoma, Gthr., the name of 

 Furina, D. & B., may be substituted. 



Mr. Krefft's collection contained several very fine examples of 



