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140 lU'LLKTIN :!l, UNITKD STATES NATIONAL MUSHUM. 



(•.vliiiilriciil, vciy sli}?litl.v co^ .imsssed towiiids tlif pointed <-oiiicaI tip, 



iiiid loiigcf than the body. 

 Theskin is evorywiicre closely lined with short perpendicular slnnds for 



secreting a milky jiiico. Tliese are largest on the upper surface of the 

 tail and more scattered on Wh'. belly. The skin is also closely covered 

 with shallow pits. visii)le only when the mucus is removed and through 

 a lens. I have not observed any large pores in patches on the head. 



The head is broad, the sides i)arallel to the eyes, then converging and 

 distinctly truncated at the cn<l. The eyes are largo and i)ronnnent, 

 separated anteriorly by one and one-half diameters of orbit ; the »lis- 

 tance to the nostrils and between them rather less than this amount. 

 The nostrils are lateral near the end of the muzzle. The upper jaw 

 overlaps the underconsiderably, especially anteriorly; where there is a 

 slight protuberance downwards of the lip on each side, the n.uzzle giving 

 a concave out'line when viewed both from before and laterally. There 

 is a slight groove down the side of the muzzle from the outer edge of 

 the nostrils to the swollen part of the lip. 



The gular fold is entirely adnate, without any overlapping. 



There are fourteen well-marked costal furrows, including tiie inguinal 

 and one close to the forelegs. They are distinct <mi thesides, but inter, 

 rupted on the back and belly; none are distinctly visible along the 

 pelvic region and the tail. There is a shallow fuirow along the back, 

 but not the least sign of ridge or compression on the cylindro-quadrate 

 tail, although this is rather higher than wide towards the end. 



The limbs are moderately developed. The digits are short, broad, 

 linear, cylindrical, depressed, and slightly swollen into knobs at the ends, 

 where they expand very little, but without any appearance of a disk. 

 There is a short, thickened membrane connecting the basal joints of the 

 digits, leaving three phalanges free of the longer toes and two and one- 

 half of the lingers. This inend)rane has the etfe(!t to cause tlio bases of 

 the digits to stand out very free and separate from each other. 



The second aiid third lingers are nearly e(pial, the latter rather longer; 

 the third toe longest; the fourth sometimes not shorter. The first 

 linger and toe are quite rudinuMitary, being a mere knob. The distance 

 from snout to axilla is contained less than three times in that to groin. 



The tongue is very large, in alcoholic speiumens frequently l)rotnid- 

 ing beyond the Jaws all round. It is oval, longer than broad, lleshy, 

 and highly papillose, thin towards the margins. It is very slightly 

 emarginate behind, the notch bordered by a ridge on each side. It is 

 l)edicellate, free behind and on the sides, but ailixed to it anteriorly; 

 the point of adhesion visibl" externally, as a circular or lozenge-shaped 

 whitish spot just behind the jaw-bone, and about as large as the orbit 

 of the eye. The attachment is comi)lete anterior to tlie pedicel, which 

 again is free from its sheath only behind. Tlie tongue is thus evertile 

 and capabh of being thrown outwards. There is no free sjrace anterior 

 to the pedicel. 



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