216 PROCEEDINGS OF THE ACADEMY OF 



tends towards the occiput from the limbs of the nuchal V, in- 

 closing a narrow brown area with it. Top of muzzle and limbs, 

 blackish. 



M. 



Totallength 0.108 



Length to orbit 005 



" " ear Oil 



" " axilla '. . .018 



" " groin 0378 



- Width head behmd 006 



Length hind foot ■ . , .014 



San Josd. Dr. Van Patten. 



A small species of metallic colors, allied to the A. viridiaenetis, 

 Peters. It is the eighty-fifth of the genus known to the writer. 



III. The third collection was made by the U. S. Expedition to 

 survey the Isthmus of Tehuantepec for a ship canal, under Capt. 

 Shufeldt, by T. Hale Streets, M.D. It included a few species of 

 fishes whose names are appended. 



OPHIDIA. 



Elaps ornatissimus, Jan. (with distant annuli). 

 Masticophis margaritiferus, Schl. 

 Oxybelis acuminatus, Wied. 

 Coniophanes fissidens, Gthr. 

 Oxyrrhopus plumbeus. 

 Hydrops lubricus, Cope, sp. nov. 



liACERTILIA. 



Sphaerodactylus glaucus, Cope. Adult of two inches ; labials J | ; tail orange-red. 

 Scales smooth, flat. See Proc. Acad. Nat. Sci., 1865, 192. 



Cyclura acantbura, Wiegm. 



Cyclura pectinata, AViegm. 



Sceloporus. 



Amiva. 



Cnemidopliorus. 



Plistodon. 



BATRACHIA. 



Systoma ustum, Cope {Engystoma mexicujium, Peters). 



Bufo agua, Dand. 



Bufo steruosignatus, Gthr. 



Litbodytes rbodopis, Cope {Hylodes sallaei, Gthr.). 



[October 24, 



