FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 15 



equal to its distance from tip of snout; interorbital diameter a little 

 wider than the rather broad upper eyelid, but narrower than distance 

 between the nostrils. Tympanum hidden under the skin, only partly 

 visible when specimen is allowed to become dry, the tympanic area 

 apparently about one-half the diameter of the eye and located immedi- 

 ately behind it. Fingers fairly long, free, not fringed, with small but 

 distinct disks, first and second fingers subequal and decidedly longer 

 than the very short fourth; subarticular tubercles of fingers large; 

 toes distinctly webbed at the base, not fringed, their tips very dis- 

 tinctly swollen into disks equal to about one-fourth the tympanic 

 area, the lower parts of disks rounded, their upper parts with two 

 platelike swellings separated by a Y-shaped median groove; third toe 

 much longer than fifth, reaching halfway to penultimate phalanx of 

 fourth ; a short tarsal ridge extending from base of first toe and ending 

 midway on the tarsus in a transverse distinctly thickened ridge which 

 suggests the tarsal tubercle found in some species of Physalaemus; a 

 small indistinct inner and a very small outer metatarsal tubercle; 

 subarticular tubercles of toes smaller and less evident than those of 

 fingers. No inguinal or lumbar gland. Body m.oderately elongate, 

 in postaxillary region equal to greatest width of head; when hind legs 

 are adpressed, heel reaches to posterior corner of eye; when limbs are 

 laid along the body, knee and elbow touch; when hind legs are bent 

 at right angles to body, heels touch. Skin thick and porous above 

 but without any raised glandular lines; ventral sm-faces smooth except 

 for a few postanal granules. No external vocal sac apparent. 



Dimensions. — Head and body 18 mm.; head length 6 mm., width 

 5.5 mm.; femur 7 mm.; tibia 8.5 mm.; foot 7 mm.; hand 4 mm. 



Mathematical analysis (in percentages of the total length) : 



head head 

 length width femur tibia foot hand 



Number 14 14 13 13 14 13 



Mean 35. 2 31. 6 42. 8 46. 41. 3 23. 5 



Standard deviation 2. 89 2. 19 3. 27 2. 60 3. 02 2. 59 



Variation 8. 2 6. 9 7. 6 5. 4 7. 4 11. 



Standard error 1. 20 . 93 1. 39 1. 10 1. 25 1. 10 



Range 31. 4- 28. 5- 38. 9- 42. 5- 36. 4- 18. 2- 



40. 9 36. 4 52. 50. 47. 28. 



Color in alcohol. — Dorsum deep walnut brown; a clove-brown stripe 

 beginning at the nostril, continuing on the loreal region, widening 

 greatly on the tympanic region and covering the side of the body up 

 to the groin; edge of lip below this stripe pale ecru drab; ventral region 

 also pale ecru drab, the line of demarkation very straight and clearcut 

 along the sides between the clove-brown lateral stripe and this ventral 



