2. EAN4. 41 



male is provided with an external vocal vesicle behind each angle 

 of the month. Upper part of each flank with a well-marked row of 

 pores, which does not exist in B. lialecina. 

 United States. 



42. Rana areolata. 



Eana areolata, Baird S,- Gir. Proc. Ac. Philad. 1852, p. 173; Baird, 

 U. S. Mex. Bound. Suvv. pi. 36. f. 11, 12. 



Appears to be closely allied to R.licilecina and ufricularia, but the 

 head is larger and the spots of the back are smaller and more 

 numerous. Male with an external vocal vesicle on each side behind 

 tho angle of the mouth. 



South of Xorth America. 



43. Rana halecina. 



Rana halecina, GiMh. Cat. p. 13. 

 Kaua halecina, Kahn, Her Amer. iii. p. 46 ; Baud. Bain. p. 63, and 



Bept. viii. p. 122; Merr. Tent. p. 175; Holbr. N.-Amer. Ilerp.h, 



p. Sn, pi. 13 ; Tsclmdi, Batr. p. 79 ; Bum. 8,- Bibr. p. 352 ; Dekay, 



N. Y. Faun., Bept. p. 62, pi. 22. f. 60 ; Coojyer, U. S. E.vpl. Sun. 



xii. part ii. pi. xxix. f. 1 ; Brocchi, Miss. Sc. Me:r., Batr. p. 10. 



virjiiiiiana, Laur. Syn. Bept. p. 31. 



pipien;^, Gmel. S. N. iii. p. 1052 ; Donnd. Zool. Beitr. iii. p. 51 ; 



Sch-eh. Naturf. xviii. p. 182, pi. 4 ; Shaw, Zool. iii. p. 133; Schneid. 



Hist. Amph. p. 105, pi. 32 ; Leconte, Proc. Ac. Philad. 1855, 



p. 423. 



palustris, Guerin, Iconoyr. Bept. pi. 26. f. 1. 



oxyrhyuchus, Ilalhno. Proc. Ac. Philad. 1856, p. 142. 



Vomerine teeth in two scarce!}' oblique groups between the 

 choanfe. Head moderate ; snout rather pointed ; interorbital space 

 half as broad as the upper eyelid ; tympanum distinct, nearly as 

 large as the eye. Fingers moderate, first extending beyond second ; 

 toes not quite webbed to the end ; subarticular tubercles of fingers 

 and toes well developed ; inner metatarsal tubercle very small, 

 blunt ; no outer one. The hind limb being carried forwards along 

 the body, the tibio-tarsal articulation reaches nearly the tip of tho 

 snout. A prominent, narrow, glandular lateral fold. Olive or 

 greyish brown above, with regular oval or rounded dark-brown, 

 Jigji t-edgcd spots ; legs cross-barred ; beneath immaculate. Male 

 witli two little-developed internal vocal sacs. 



Xorth and Central America. 



a-b. Yg. Lake Winnipeg. Sir J. Richardson [P.]. 



c. 5 . Canada. Sir A. Smith [P.]. 



d-e. 5- United States. Smithsonian Institution. 



/. 5 . N. America. Lord Amptliill. 



g. $ , skeleton. N. America. Edward Doubledaj, Esq. 



/(. S- Mexico. 



i-k. $. Coban. 



[P.]. 



