140 BULLETIN 34, UNITED STATES NATIONAL MUSEUM. 



cylindrical, very slightly compressed towards tbe pointed conical tip, 

 and longer than the body. 



The skin is everywhere closely lined with short perpendicular glands for 

 secreting a milky juice. These are largest on the upper surface of the 

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

 with shallow pits, visible 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 parallel to the eyes, then converging and 

 distinctly truncated at the end. The eyes are large and prominent, 

 separated anteriorly by one and one-half diameters of orbit; tbe dis- 

 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 under considerably, especially anteriorly; where there is a 

 slight protuberance downwards of the lip on each side, the muzzle giving 

 a concave outline 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 the inguinal 

 and one close to the fore-legs. They are distinct on the sides, but inter- 

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

 pelvic region and the tail. There is a shallow furrow 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 ver}- 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 Angers. This membrane has the effect to cause the bases of 

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



The second and third fingers are nearly equal, the latter rather longer ; 

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

 finger and toe are quite rudimentary, being a mere knob. The distance 

 from snout to axilla is contained less than three times in that to groiu„ 



The tongue is very large, in alcoholic specimens frequently protrud- 

 ing beyond the jaws all round. It is oval, longer than broad, fleshy, 

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

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

 pedicellate, free behind and on the sides, but affixed to it anteriorly^ 

 the point of adhesion visible 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 complete anterior to tlie pedicel, which 

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

 and capable of being thrown outwards. There is no free space anterior 

 to the pedicel. 



