162 Mr. J. E. Gray on a new genus of Night Lizards. 



x^ oval body with which vas deferens communicates ; y, sac of im- 

 known function ; z, dichotomously divided tube which opens into 

 the sac y ; /3, tube connecting the sac y with the oval body x ; 

 y, the testis ? ; ^, pyriform sac connected with y; ^^^, the ovary ?; 

 6 6, capsular bodies connected with ovary. 



Plate VIT. 



Fig. 1. System of oesophageal ganglia : a a, great supra- oesophageal ganglia; 

 h b, second pair ; c c, third pair ; d, azygous ganglion ; e e, com- 

 missures connecting supra-oesopbageal ganglia with azygous gan- 

 glion ; /, commissure which runs beneath the oesophagus and 

 unites the two ganglia of the second pair ; gg, organs of hearing. 



Fig. 2. Organ of vision: a, pigmental body; h, optic nerve; c, crystalline 

 lens ; J, transparent capsule inclosing pigmental body and lens. 



Fig. 3. Subcutaneous mucous glands. 



Fig. 4. Terminal cids-de-sac of the hepatic system. 



Fig. 5. The tongue : «, lingual sac ; b, unarmed prolongation, in which the 

 tongue terminates at the right side. 



Fig. 6. Portion of posterior salivary glands. 



Fig. 7. One of the oval bodies contained in the ovarian capsules. 



Fig. 8. Portion of the ovary with its capsule : aa a, sacciform appendages; 

 b, capsule ; c, oval bodies inclosed by the capsule. 



Fig. 9. Group of ova as deposited upon the leaves of Zostera marina^ &c. 



Fig. 10, 11, 12. Embryo: a a, locomotive discs; b, foot; c, operculum; 

 J, organs of vision ; e, oesophagus; /, stomach; g, granular mass, 

 beneath which the posterior part of the alimentary canal is con- 

 cealed ; h, rudiments of oesophageal ganglia ; i i, filaments which 

 pass backwards from the base of the discs. 



Xy. — Description of a new genus of Night Lizards from Belize. 

 By J. E. Gray, Esq., F.R.S. &c. 



To the Editors of the Annals of Natural History. 



Gentlemen, — ^This interesting new form of Gecones, or Night 

 Lizards, was sent from Belize by Mr. Dyson under the name of 

 *' Gallwaspe," a name which appears to be generically applied to 

 most Lizards by the English in Tropical America. It is at once di- 

 stinguished from all the genera of the family before known by the 

 short, blunt, compressed, equal-diametered toes, but more particularly 

 by the very small size of the claws, which are completely hidden be- 

 tween two large, half oblong scales, which have a narrow one between 

 the base of the upper edge. 



Genus Coleonyx. Fam. Gecotid^. 



Toes rather compressed, equally thick their whole length, blunt 

 at the end ; edges simple, rounded ; upper surface covered with a single, 

 and the sides with three series of six-sided scales, the under surface 

 with a single series of rather narrow, slightly convex, transverse scales ; 

 the end of each toe furnished with large, oblong, convex scales on 

 each side, forming a complete sheath to the small claws, and with 



