NATURAL SCIENCES OP PHILADELPHIA. 351 



of species of Mabuia.* The size is much less. Eight superior labials, eye over 

 sixth ; seven inferior. Supranasals separating rostral from internasal ; the 

 latter is nearly twice as broad as long, and is extensively in contact with the 

 frontal. Fronto-nasals small, transverse. Frontal pentagonal cuneiform ; its 

 longest side bounded by first supraorbital only ; of the latter there are three. 

 Fronto parietals large, interparietals broad ; postoccipitals present. Ear with- 

 out lobes ; thirty longitudinal rows of scales ; six preanal scales. A few cal- 

 caneal tubercles. From muzzle to ear-orifice 5 lines ; from ear to vent 1 inch 

 6 lines. Vent to end of tail 3 inches 9 lines. 



Color. Below greenish white. Sides (six and a half rows of scales wide) 

 brownish black, traversed by two longitudinal white lines, one from the 

 muzzle and one from the lip, two and two half rows of scales apart. Dorsal 

 region brown for a width of only two and two half rows of scales, divided by 

 a narrow median blackish line from nape to rump. Head brown above. Tail 

 brown, with the lateral bands continued. (No. 5405.) 



Teius v i r i d i s Merr., Dum. Bibr., Erp. Gen., v. 143. Nos. 4399-5856. 



Ameiva surinamensis Gray, Cope, Synopsis Holcosus and Ameiva, &c, 

 p. 8. (Braz.) 



Tupinambis t eguexin ?Dum. Bibr., x. p. 85. No. 4708, (Braz.) 



Ortholfemus fitzroyi Girard, U. S. Expl. Exped., p. 373. No. 5853. 



Taraguira torquata Gray, Dum. Bibr., iv. p. 344. No. 5897. (Braz.) 



Microlophus spinulosus Cope. 



This species differs from the peruvianus in possessing three rows of 

 scales anterior to that which is homologous with the internasal, instead of 

 two ; the anterior two are entirely transverse, and composed of four scales 

 each ; the posterior of two large ones. Two parietals, narrower than inter- 

 parietal. Supraorbitals short, separated by two rows of scales from the super- 

 ciliary series. Supraorbital margin thickened posteriorly. Two rows above 

 the labials, and two series of loreals. Temporals spinulose. Infralabials lon- 

 gitudinal. A group of tubercles on anterior margin of ear ; other groups on 

 the neck folds. Scales of sides as large as the abdominal. Inguinal and axil- 

 lary scales, and those of the extremities, especially of the posterior face of the 

 femur, with their keels prolonged into recurved spines. Crest scales twice as 

 high as long, thickened on the nape. Palatine teeth present. Length from 

 muzzle to neck fold 1 inch 6 lines ; neck fold to vent 4 inches 3 lines ; vent to 

 end of tail 6 inches 6 lines ; of anterior extremity 2 inches ; posterior extre- 

 mity 2 inches 10 lines. General color bright olivaceous, with indistinct brown 

 variations ; extremities narrowly brown barred. (No. 5956.) 



Scartiscus caduc u s Cope, Pr. A. N. S. Philada., 1862, p. 182. No. 5852. 



Polychrus anomalus Wiegm., Dum. Bibr., iv. 69. 



Batrachia. 



Lysapsus limellnm Cope, Pr. A. N. S. Philada., 1862, p. 157. From the 

 Curumba River. 

 The genus Lysapsus is very nearly allied to Pseudis, and can scarcely be 

 placed in another family. Renewed examination shows, as before, that the 

 sacral diapopbyses are dilated, and the digital expansions as large as those of 

 Acris, and more developed than in Pseudacris. A difficulty in distinguishing 

 between Oxydactyl and Platydactyl groups of Opisthogloss Anura has been 

 experienced by some zoologists, and to the author it seems that such a pri- 

 mary division cannot be maintained. It is not impossible that certain genera 



* Pr. A. N. S Philada., 1862. M. (Riopa) albipunctata Gray, Am. M. N. H. xvii. 

 430. was omitted from the list. 



1862.] 



