362 XJ. S. NATIONAL MUSEUM BULLETIN 206 



c'. Clavicle straight or but slightly bent Hypopachus (p. 366) 



6^. Clavicle much reduced, not reaching the scapula and confined to the mesial 

 portion of the precoracoid. 

 c*. Precoracoid and clavicle usually reaching the distal half of the coracoid. 



Chiasmocleis (p. 362) 

 <?. Precoracoid and clavicle very small, not reaching the distal half of the 



coracoid Elachistocleis (p. 364) 



a^. Clavicles and precoracoids absent Microhyla (p. 368) 



Genus Chiasmocleis Mehely 



1885. Engystoma (not of Fitzinger) Boettger (part), p. 240. 

 1904. Chiasmocleis Mehely, p. 210 (genotype, Engystoma albopunctatum Boett- 

 ger). 

 1910. Gastrophryne Stejneger (part), p. 166. 

 1924. Nectodactylus Miranda-Ribeiro, 1924b, p. 256; 1926, p. 182. 



Generic diagnosis. — Prevomer divided, the postchoanal portion want- 

 ing, palatine absent. Clavicle and precoracoid present, short, reaching 

 the midline of the girdle but not the scapula, as they meet the coracoid 

 in its lateral half; no omostemum; sternum cartilaginous. Vertebral 

 column diplasiocoelous. Terminal phalanges simple. Pupil round. 

 Tongue oval, entire, and free behind; two smooth dermal ridges across 

 the palate, in front of the pharynx, the anterior much shorter than the 

 posterior. Digits without terminal disks, or with very small ones. 

 Tympanum hidden; first finger much shorter than second; outer toe 

 shorter than third; outer metatarsal tubercle lacking. 



Key to species of Chiasmocleis of southeastern Brazil 



a^. Canthus rostralis rounded albopunctata (p. 362) 



a2. Canthus rostralis well marked, angular bicegoi (p. 363) 



Chiasmocleis albopunctata (Boettger) 



Figure 28 



1885. Engystoma albopunctatum Boettger, p. 240 (type locaUty, Paraguay). — 

 BouLENGER, 1894, p. 347. — Budgett, 1899, pp. 305, 311. — Peracca, 

 1904a, p. 12.— Miranda-Ribeiro, 1920c, p. 282; 1926, pp. 185, 225. 



1904. Chiasmocleis albopunctata MiShelt, p. 210, pi. 13, figs. 4, 5. — Parker, 

 1934a, p. 118.— Dunn, 1949, p. 8. 



1910. Gastrophryne albopunctata Stejneger, p. 166. 



Description. — Adult female (?), IB 455, Canna Brava, Golds. 

 Snout rounded, rather prominent, 1% times as long as the eye; canthus 

 rostralis rounded; loreal region oblique, not concave; nostril much 

 nearer to the tip of the snout than to the eye; interorbital space three 

 times as broad as the upper eyelid. Fingers not dilated, short, 

 bulbous at the tips, with very distinct lateral dermal fringes, second 

 and fourth subequal. Toes bulbous at the tips but not dilated, free 

 but with very wide lateral fringes proximally. Subarticular tubercles 



