M4 bbLTJBklDjft. 



k-n. S (So. 28; V. 139; 0. ?), Cartago, Costa 



$ (Sc. 23; V. 134; 0. ?), Rica. 



& hgr. (Sc. 23, 25 ; V. 142, 



139; 0.?, 63). 

 o, p, q. Skulls. United States. 



B. (Var. svpedon.) The dorsal spots as in the preceding but much 



paler, the interspaces between them appearing as narrow trans- 

 verse light bands margined with black ; belly with pale brown 

 blotches. Scales in 23 rows. 



a. 5 (Sc. 23; V. 139; 0.68). Pennsylvania. Smithsonian Institution 



[P.]. 



b. S (Sc. 23 ; V. 138 ; C. 75). N. America. Lord Ampthill [P.]. 



C. (Var. eryihrogaster.) Brick-red or dark brown above, uniform red 



or copper colour beneath. Scales in 23 or 25 rows. 



a. 2 (Sc. 25; V. 152; C. 64). Illinois. Smithsonian Institution 



[P.]. 



D. (Var. rhombifer.) Pale brown above, with three alternating series 



of transverse dark brown spots, the median not larger than the 

 lateral ; these spots may be connected by dark brown meshes ; 

 belly with brown spots. Scales in 25 or 27 rows. 



a. S (Sc. 26 ; V. 144 ; . 77). New Orleans. M. SalW [0.]. 

 6. Yg. (Sc.27; V. 140; 0. 76). New Orleans. 



c. Yg. (Sc. 27 ; V. 136 ; 0. 58). Louisiana. 



d. Yg. (Sc.25; V. 138; 0. 66). Mexico. 



E. Like the preceding, but spots paler and smaller ; belly imma- 



culate. 



a-f, g, h-k. cf (Sc. 26 ; V. 143 ; Mexico. 



C. 81), 2 (Sc. 25, 25, 25, 



25, 25, 27 ; V. 141, 143, 



139, 140, 141, 142 ; 0. 66, 



69, 67, 71, 68, 67), & yg. 



(Sc. 25, 27, 25; V. 138, 



137, 147 ; 0. 71, ?, 82). 

 I. d" (Sc. 25; V. 143; 0.?). Tampico, Mexico. Mr. Richardson [C.l 



F. D. Godman, Esq. 



46. Tropidonotus cyclopinm. 



Tropidonotus cyclopion, Dum. ^ Bibr. vii. p. 576 (1854) ; Cfunth. 



Cai. p. 77 (1858) ; Cope, Proc. Ac. Philad. 1861, p. 299 ; Jan, 



Arch. Zool. Anat. Phys. iii. 1865, p. 223, and Icon. Gen. 26, pi. v. 



figs. 2 & 3, and pi. vi. (1868) ; Oarm. N. Am. Rept. p. 26, pi. ii. 



fig. 4 (1883). 



cyelo Dion, part., Oiinth. Cat. p. 248. 



Natrix cyclopium, Cope, Proc. U.S. Nat. Mus. xiv. 1892, p. 673. 

 Nerodia cyclopium, H. Garm. Bull. Illin. Lab. iii. 1892, p. 271. 



Closely allied to T. fasciatus, but eye separated from the labials 

 by two or three suboculars, and scales in 29 to 31 rows. Ventrals 

 132-150 ; anal divided ; subcaudals 60-79. Dark olive above, with 



