BATEACHIAANOURA. 27 



upon the snout ; their membrane, posteriorly, is provided with a very 

 small knob. The sides of the snout, behind and somewhat below the 

 nostrils, are slightly depressed or subconcave. The eyes are large 

 and prominent ; their diameter is almost equal to the distance between 

 their anterior margin and the extremity of the snout. The tympanum 

 is subcircular; its diameter being equal to the distance extending from 

 the eyes to the nostrils. The tongue is large. The vomerine groups 

 of teeth are placed exactly between the inner nostrils, a little nearer 

 the latter than they are to each other upon the medial line. The 

 inner nostrils themselves are very conspicuous, subelliptical, one-third 

 smaller than the openings of the Eustachian tubes, which are subcir- 

 cular. 



The body is subcylindrical; the dorsal region depressed. The elbow 

 and knees overlap each other considerably, when brought along the 

 side of the abdomen. The second and fourth fingers are equal in 

 length, and shorter than the innermost; the fifth is the longest of all. 

 They are subdepressed ; swollen at the tip, and provided under each 

 articulation with a somewhat conspicuous tubercle. Two contiguous 

 and flattened disks are observed at the base of the carpus, which other- 

 wise is smooth. The toes, like the fingers, are slightly swollen upon 

 their tips, and provided underneath with tubercles corresponding to 

 each articulation. The under surface of the tarsus is finely reticula- 

 ted ; a flattened tubercle exists exteriorly to the base of the first toe, 

 and a small circular rudimentary one at the base of the fifth. The 

 membrane uniting the toes is deeply emarginated between each digit. 

 The membrane appears to extend to the middle of the last phalanx, 

 except in the case of the fourth or longest toe, where almost two pha- 

 langes may be seen projecting beyond that membrane. 



The snout is perfectly smooth. The space between the eyes and 

 the eyelids above, appear as if finely reticulated, especially the latter. 

 The glandulous ridges on each side of the back are variable in width. 

 The dorsal space between these ridges is irregularly spread over with 

 tubercles, varying in size, none of which being very large ; the skin 

 there presents the same appearance as the surface of the glandulous 

 ridge, and the upper inner half of the eyelid. The sides of the abdo- 

 men are minutely glandulous, as also the upper portion of the legs. 

 A very narrow glandulous ridge may be observed immediately above 

 the tympanum detaching itself from the dorsal one, and descending 

 obliquely towards the shoulders, where it meets a transverse glandu- 

 lous and thicker ridge, extending from the angle of the mouth beyond 



