270 Mr. A. W. E. O'Sliauglinessy on series of silvery spots along the lateral line j a Wack spot in the axil. Two specimens from Port Natal. Length 11^ inches. Sphyrcena Guntheri. D. 5i. A. ^. L. lat. 130. L. transv. 22. The height of the body is one ninth of the total length j the length of the head is contained three times and two thirds in the total 5 the diameter of the eye is rather more than one seventh of the length of the head. The opercle has a single point ; the opercles are scaly, and the prseoperculum is rounded. Thelower jaw with a short fleshy appendage anteriorly. The pectorals are contained nearly ten times in the total length ; they are one third longer than the ventrals ; the spine of the latter is nearly as long as the rays. The origin of the dorsal is on a level with the extremity of the pectorals, hut somewhat hehind the root of the ventrals, considerably in front of the middle of the length of the body. The interspace between the dorsals is equal to one seventh of the total length. The maxillary reaches to the anterior margin of the eye. One specimen from Colon, Atlantic. Length 16 inches. XXXVI. — List and Revision of the Species of A\\o\\^2S. in the British-Museum Collection ^ icith Descriptions of nexo 8i)ecies. By A. W. E. O'Shaughnessy, Assistant in the Natural-History Department. Since the date of the publication of Dr. Gray's 'Catalogue of Lizards in the British Museum' large additions have been made to the collection of specimens of the group Anolis. Many of these additional specimens were examined by Mr. Cope some years since, and furnished him with the types of new species, which he described in the ' Proceedings ' of the Academy of Natural Sciences of Philadelphia. The following list is the result of a recent study of the entire series, and gives the names of all the species which appear to me to be represented in it. Cham^leolis, Coct. ChamceleoUs fernandina^ Coct., Sagra's Cuba, p. 145, t. xli. Anolis chamcehonides, Dum. & Bibr. Erp. Gen. iv. p. 168. Chamcpleolis p&rnts, Gundlach, Eep. fis.-nat, Cuba, ii. p. 109: Cope, Proc. Acad. Pliilad. 1864, p. 168.