1, CHAMiELBON. 445 



or spur. Tail slightly longer Ihan head and body. A white line 

 from chin to vent. 



niilliiu. 



Total Icngtli 378 



From end of snout to extremity of mandible . . 43 



From end of snout to extremity of casque. . . . 05 



Greatest Avidtli between lateral cranial crests . . 21 



Depth of skull (mandible included) 50 



AVidth of head 30 



Body 140 



Tibia 34 



Tail 195 



Soiith Arabia *. 

 a. S- Near Aden. Major Yerbury [P.]. 



3. Chamaeleon calcaratus. (Plate XXXIX. fig. 2.) 



ChanKBleo vulgaris, part., Gray, Cat. p. 205. 

 Chamasleo mexieaous, Laur. St/n. Ilept. p. 45. 



africanus, Laur. I. c. p. 40. 



calcaratus, Merr. Tent. p. 102. 



zebra, Bortj de St. Vine. Diet. Hist. Nat. iii. p. 97. 



vulgaris, var. B, D/nii. S)- Bibr. iii. p. 208. 



Chamaileon coromandt.-liciis, Fifz. Si/st. liept. p. 41. 



Chamjeleo zeylonicus (non Laur.), Jerd. Joiirn. As. Soc. Beng. xxii. 

 1853, p. 400; StoUczka.Proc.As.Soc. Ben<j.\^10, p. 1, & 1872, p. 81. 



vulgaris, Giinth. licpt. Brit. Lid. p. 102 ; Thcob. Cat. Itept. 



Brit. hid. p. 120. 



Chameleon vulgaris, part., Gray, Proc. Zool. Soc. 1864, p. 409. 

 , var. marmoratus, Gray, I. c. 



Casque much elevated posteriorly, with strong curved parietal 

 crest ; the distance between the commissure of the mouth and the 

 extremity of the casque equals or nearly equals the distance between 

 the end of the snout and the extremity of the mandible ; no rostral 

 appendages ; a strong lateral crest, not reaching the extremity of 

 the parietal crest ; an indication of a dermal occipital lobe on each 

 side, not reaching the parietal crest. Xo enlarged tubercles on the 

 body : a feebly serrated dorsal crest ; a series of conical tubercles 

 form a very distinct crest along the throat and belly. Male with a 

 tarsal process or spur. Tail longer than head and body. Gular- 

 ventral crest white ; commissure of the mouth white. 



A- 2- 



millim. milliin. 



Total length 373 370 



From end of snout to extremity of man- 

 dible 40 38 



From end of snout to extremity of casque 57 51 



* Tlie specimen described by Peters is said to have been obtained in 

 Madagascar. 



