FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 361 



eye, while the edge of the lips is especially darkened. The dark ventral 

 spotting extends also onto the arms and legs, although diminished in 

 intensity. 



Remarks. — Adults are found under leaves in mountain forests near 

 the city of Rio de Janeiro. Their small size and their apparently 

 very local distribution have made them extremely rare in museum 

 collections. 



Dr. Bertha Lutz (1944b) has described the development and hatch- 

 ing of the eggs. 



The shape of the tongue in Zachaenus parvulus is extremely sugges- 

 tive of that of Craspedoglossa stejnegeri (Noble), the type of which 

 is from the Serra das Orgaos, near the city of Rio de Janeiro. While 

 the two forms are specifically distinct, owing to the larger adult size, 

 shorter legs, more pointed snout, and absence of axillar wing in the 

 latter, they may prove to be congeneric. The type of Zadoaenus 

 roseus Cope from Port Otway, Patagonia, is too completely macer- 

 ated to be of any value in comparison. 



Specimens examined 

 BRAZIL: 



DiSTRicTO Federal: Rio de Janeiro: Corcovado, USNM 96337, Venancio. 

 Tijuca, USNM 96313 (cotype of Ceraiophrys fusciventris), Venancio, Jan. 10, 

 1926; USNM 96314, A. Lutz, Aug. 9, 1929; USNM 96315, A. Lutz, Mar. 5, 

 1934; USNM 97427, A. Lutz, Cochran, and Venancio, Feb. 19, 1935; ZSBS 

 21/1947, A. Lutz, 1932. 



Rio de Janeiro: Serra daa Orgfios, BM 1901.11.25.7 (type of Oocormus microps), 

 Wagner brothers. 



Suborder DiPLASIOCOELA 



Family Microhylidae 



Fimistemal Salientia, with a tongue. Eustachian tubes, if present, 

 paired. No ribs. No intercalary phalanges. Vertebral column 

 procoelous or diplasiocoelous. Sacral diapophyses more or less 

 dilated. Ethmoid divided or absent. Palatal folds usually present. 

 Coraco-radialis attached to the whole width of the precoracoid- 

 clavicular bar when this is present. Insertion of the semitendinosus 

 passing dorsal to the gracilis. Larva v/ithout horny mandibles, labial 

 teeth, or suprarostral cartilage; spiraculum, if present, median. 



Key to the genera of MicrohyUdae of southeastern Brazil 



a'. Clavicles and precoracoids present. 



6^. Clavicle and precoracoid well developed, both extending from the midline 



of the sternum to the scapula. 



c*. Clavicle strongly bent, forming almost a right angle proximally with the 



scapula; omosternum absent; sternum wide, cartilagionus; tympanum 



indistinct Stereocyclops (p. 370) 



