442 DR. A. GUNTHER OX NEW REPTILES [June 16, 



Fig. 9. Erigrme directa, £ & ? , p. 439. 



a, profile ; h, caput, from the front ; c, right palpus, from behind and 

 above; d, radial, cubital, and (part of ) humeral joints of ditto, from 

 inner side ; e, natural length ; /, genital aperture of female. 

 10. Erigone indirecta, $ & $ , p. 440. 



a, palpi; b, caput, from the front ; c, natural length of male ; d, genital 

 aperture of female. 



5. Descriptions of some new or imperfectly known Species 

 of Reptiles from the Camaroon Mountains. By Dr. 

 Albert Gunther, V.P.Z.S. 



[Keceived June 9, 1874.] 



(Plates LVI.&LVII.) 



Mr. Higgins has just received from one of his correspondents a 

 small but singularly interesting collection of reptiles made in a part 

 of the Camaroon Mountains whence evidently no collection had 

 previously reached England. It contained only eleven species, viz. 

 Calabaria fusca, Typhlops eschrichtii, Dipsas valida, Lycophidium 

 irroratum, Chamceleon cristalus, Liurus ornatus, and Hylambates 

 palmatus, and four others previously not known to me, which are 

 distinguished by a most extraordinary combination of characters, as 

 will be seen from the following descriptions. 



Cham.'Eleon montium. (Plate LVI.) 



Chamceleo montium, Buchholz, Berlin. MB. 1874, p. 88, figs. 1-4 

 (head). 



Adult male with two nearly straight pointed horns, horizontally 

 projecting forwards from above the nostrils ; the sheath in which 

 they are encased is finely annulated, and the horns themselves are 

 about half as long as the head. The occiput is quite flat, with a 

 semielliptical or semioval outline, and without lateral lobes. The 

 superciliary edge is slightly raised, the forehead beiug rather con- 

 cave. A high crest, supported by the neural spines of the vertebrae, 

 runs along the whole length of the back, and is, without interruption, 

 continued over the anterior third of the tail, at the end of which it 

 abruptly ceases. Its upper margin is slightly scolloped, except in 

 the middle third of its length. Its highest portion is that on the 

 tail. The upper part of the head is covered with small, irregular, 

 polygonal scutes ; and other round scutes of about the same size are 

 scattered over the sides of the body, and are more numerous on the 

 throat, where they are sometimes conically raised. No line of com- 

 pressed scales along the middle of the belly. 



A young male, scarcely more than 2 inches long without the tail, 

 has the horns already well-developed, about as long as the orbit, and 

 a distinct indication of the crest. 



In the adult female the two frontal horns are reduced to two conical 

 prominences, and the occiput is much less produced backwards. No 

 dorsal crest. 



