78 BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



Ecuador on the south are the known limits of the range of this group. 

 These small species have much more slender bodies than those of either 

 Pleurodema or Eupemphix, and the sldn on the upperparts is decidedly 

 glandular. A diamond-shaped mark on the back bounded by glan- 

 dular ridges seems to be a constant character. 



The sternal apparatus of Engystomops is quite similar to that of the 

 Paludicola signifera figared by M^hely.^^ The omosternum, however, 

 is cartilaginous and not semiossified as in P. signifera, and the bony 

 style is bifurcated distally but not proximally also, as in the latter. 

 Each of the branches of the bony style are furnished with a separate 

 cartilaginous plate. The terminal phalanges are rarely simple, but 

 generally have a peculiar nodular distal end, and occasionally a 

 pseudo-T-shaped distal end. 



ENGYSTOMOPS PUSTULOSUS (Cope) 



Figure 18 



1864. Paludicola pustulosa Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 16, 



p. 180, Aug. 

 1876. Microphryne pustulosa Cope, Journ. Acad. Nat. Sci. Philadelphia, n. 8., 



vol. 8, pt. 2, p. 155. 

 1882. Engystomops pustulosus Boulenger, Catalogue of the Batrachia Salientia s. 



Ecaudata in the collection of the British Museum, 2d edit., p. 275. — 



GiJNTHER, 1901, Biologia Centrali-Americana, Reptilia and Batrachia, p. 



242, Feb. 

 1882. Bufo {Microphryne) pustulosus Brocchi, Mission scientifique au Mexique 



et dans TAm^rique Centrale, recherches zoologiques, pt. 3, sect. 2, p. 86, 



pi. 8, figs. 1, la-d. 

 1923. Eupemphix pustulosa Nieden, Das Tierreich, Lief. 46, Amphibia, Anura I, 



p. 165. 



Type locality. — New Granada, on the River Truando, Colombia. 



Range. — Interior valleys on the southern side of the Isthmus 

 of Tehuantepec in southern Oaxaca, southward to Panama and 

 Venezuela. 



Remarks. — Cope designated a specimen in the National Museum 

 (No. 4339) as the type and stated that it was collected by W. S. Wood 

 of Lieutenant Micliler's surveying expedition. The original entry 

 in the museum catalogue for this number gives Darien [Panama] as 

 the locality and [Arthur] Schott as the collector. The type can not 

 now be found. 



Surprisingly little is known in regard to the natural habitat of this 

 widely distributed species. According to an annotation in the field 

 catalogue of Nelson and Goldman, this small leptodactylid was found 

 to be rather common during wet weather in the vicinity of Santo 

 Domingo in Oaxaca at an elevation of 900 feet. It was observed 

 that they were especially active on rainy nights and that they often 

 came into the house where Nelson and Goldman were staying. 



M M6hely, L. v., Ann. Hist. Nat. Mus. Nat. Himgarici, Budapest, vol. 2, pi. 13, fig. 6, 1904. 



