FROGS OF SOUTHEASTERN BRAZIL — COCHRAN 155 



across the chest; a round, flat, poorly developed inguinal gland; vocal 

 sac apparently internal. 



Dimensions. — Head and body 36 mm.; head leugth 12,5 mm., width 

 11.5 mm.; femur 16 mm.; tibia 18 mm.; foot 14.5 mm.; hand 10 mm. 



Color in alcohol. — Ground color of upper parts deep olive; a light- 

 edged, dark, clove-brown, triangular spot between the eyes, its angles 

 extending to the edge of the eyelids and over the occiput; a dark 

 clove-brown loreal stripe and some dark diagonal spots on the upper 

 lip; an irregular clove-brown stripe beginning behind the eye, widening 

 above the shoulder, and ending in several fingerlike irregular pro- 

 longations; an u-regular anastomosmg pattern of sepia spots across 

 the back; arms and legs heavily crossbanded with wide, diagonal, 

 clove-bro\^Ti bars; these continued on the anterior and posterior sur- 

 face of femur, and appearing in the groin as irregular heavy blackish 

 brown patches on a pale ground; ventral surfaces drab-gray with 

 a fine sepia reticulation especially distinct on throat, chest, and lower 

 femur, more suffused on belly and rest of lower limb surfaces. Con- 

 cealed surfaces of legs with a pale gi'ound which emphasizes the 

 heavy continuations of the dark crossbands. 



Variations. — In this same series from Alto da Serra, Sao Paulo, the 

 dorsal coloration varies from dark seal brown through sepia to light 

 fawn color and pale ohve-gray. The dark triangular spot between 

 the eyes is very conspicuous and most examples show the A-shaped 

 sacral mark, as well as a pair of A-shaped dark spots between the 

 shoulders. The back is beautifully marbled with irregular, wavy 

 markings, which became very dark on the sides of the body. The 

 femoral bars are lighter on top, darker as they go over the front and 

 back femoral surfaces, usually fading out below on the pale specimens, 

 but making a dark, suffused reticulation with yellow or orange inter- 

 stices on the darker animals. The belly may be quite immaculate, 

 or covered mth coarse or fine brown reticulations. The chin is usually 

 finely spotted with dark. The light inguinal spot (bright orange in 

 life) is very apparent in all, being heavily margined above and below 

 with dark brown. In color this form is closest to H. catharinae Boulen- 

 ger, a photograph of which is shown on plate 13 for comparison. 



The variation in size of the tympanum in the Alto da Serra series is 

 very great; in most of the individuals it is about equal to half the eye 

 diameter, but in several it is two-thirds this diameter, while a few 

 show it but one-third the eye diameter. In USNM 96918, an adult 

 female H.flavoguttata from Minas Gerais, the tympanum is noticeably 

 smaU compared to an average H. brieni. 



The inguinal gland is not evident on soft alcoholic specimens, but 

 on those which have hardened in formalin the pulling of the surround- 

 ing skin of belly and side into Httle ridges makes it stand out well. 



