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32G BULLETIN 3t, UNITED STATES NATK^XAL MUSEUM, 



Aeris f/r!jUit,s crepitans Baird. 



Aa'U grjillns Diini. A- Hilir., Erp. (J<mi,, vmi, IHIl. \>. '.(Ml, jxiflim : Cliiiitlifi- Cut. Hatr. 



Sal. Brit. Mus., l^i-^, p. 7, imrlim. 

 Illlhihs grtjlhiH Do Kay, N. Y. Zool., KVptil., ni, 1S|-.'. p. 70, IM. \xii, li-. t;i. 

 AcrtHcrepHans Bainl, rrocwd. Ac. I'liila.. H.'r., )». .Mt; !.!■ < 'cmti-. /. ,■.. p, .J-j(i; Hiiiril, 



U. S. Mo.\. Bound. Siirv., Ropt., p. 'J-', 1*1. xxwii, li-. 11-17. 



Flfi.82. Acris firylliis ctrpilnim. "So. in02l. Dps Moinr-t, Inw.i. ] : .niiil 7. f. 



Brownish abovo. The iiuMliaii r'j'moii of head and body almvo brijilit 

 green; a dark triansh' between llie eyes. Three obli(|ne blotches on 

 the side.s, nearly e^inidistant : the lirst belihid the eye, the hist on the 

 Hanks and running up on the back ; all usnally margined with liglitrr, 

 a narrow wliite linc^ from tlie eye to arm. IJencatli yellowishwiiite. 

 Inferior face of thigh i)hiin. Tibia a little more than half the length (»t 

 the body. Foot rather smallei'. Head rather obtuse, scarcely longer 

 than broad. Web of hind foot extending to the penultimate articula- 

 tion of the (ourth toe. 



This subspecies is (tharai^terized by a rather long, narrow head, with 

 the eyes farther back than usual. There is no constriction for the neck, 

 the outline tapering towards the snout from altout the middle of the 

 body. The limbs are very muscular, and c(Misiderably developed. 



The eyes arc large and prominent ; their anterior edges deciidediy be- 

 hind the middle of the commi.ssnre, and their posteiior barely anterior 

 to the angle of the mouth; hence the siu)nt is consideraldy pr<Mhiced. 

 The nostrils are minute, situated on thecanthus rostralis, rather nearer 

 t/ie tip of the snout than the eye, and .separated by a distaiu'e less than 

 one-third the width of the rami. Tlie tympanum is small, not veiy dis- 

 tin(;t, about half the diameter of the «'ye, and placed just above the ric- 

 tus. The head is abnost as long as wide, espetiially in laigc specimens. 



The tongue is broad, oval, subtruucate, and but slightly emarginate 

 behind; the anterior extremity rounded; it is frcc^ behind and on the 

 sides. The inner nares are large, open, i>la(!ed a little in front of a 

 point opposite tlu^ anterior canthus orbitalis. 



The vonu'rine teeth are situated in two oval patches about the size 

 of the nares, the slightly longer axes inclined a little to each other, 

 backward. They an^ phu-ed between the nares, their anterior edges 

 nearly in the same transverse line with those of the nares, and extend- 

 ing a little beyoiul the nares i)osteri»U'ly, and thus more anterior than in 

 any other of the .small llyloids of North Anu'rica. They are about as 



