256 ON THE GLOSSOPHAGIN®. 
membrane is but half an inch deep at the rump, and the lateral upper incisors are 
smaller than the centrals. The interfemoral membrane is hairy. This species is nearer 
Anura in most of its characters than any other genus in the group. 
LoNncHOGLOSSA. 
Tail short ; wing membrane attached to ankle; calcar present but small, about one- 
third the length of the tibia; a phalanx to second digit; groove in lower lip narrow with 
a few inconspicuous warts; no warts on upper lip; basal part of nose leaf rudimental ; 
apical third of tongue filamentose ; interfemoral membrane not hairy. 
Dental formula: 1. 4#— ec. +— p. 3 — m. 3 = 22. 
The first lower premolar small and without anterior, basal cusp; the main cusps of 
the entire series twice the height of the basal cusps. 
The presence of the tail and a phalanx to the second digit are sufficient grounds to 
separate Lonchoglossa from Anura. 
Lonchoglossa caudifera Geoff. 
Auricle pointed, internal basal lobe bound down to head. External border faintly 
sinuate scarcely ; any external basal lobe; the inner lappet large. Tragus blunt at tip. 
Nose leaf simple, without pedicle ; lateral gland mass of base rudimental ; wpper lip short, 
without warts. 
Large numerous vibrissee from face, especially from mentum. Filaments on tongue 
large, not meeting in middle line of dorsum. Wing membrane reaches to calcar. Seven 
rugee on the hard palate, the last two alone divided. The tail not quite as long as the 
short interfemoral membrane, the tip not free. 
The hair of the dorsum exhibits apical third brown, basal two-thirds pallid. Beneath 
paler, prevailing hue brown (but with scarcely a contrasted shade toward base), tending 
to become grayer, almost unicolored on loin. Limbs naked. 
The wing markings both in the nerves and muscle fascicles are as in G'lossophaga, but 
the terminal cartilage of the fourth digit is terete, and that of the fifth digit is small and 
scarcely deflected. 
The Skull—The bones yery.thin, permitting the subdivisions both of cerebellum 
and cerebrum to be seen through the periphery. The pretemporal ridge unites with its 
fellow at the anterior fourth to form a faint, linear crest; the mesotemporal and _post- 
temporal ridges not separately defined, scarcely discernible. Fronto-maxillary inflation 
small. Face vertex without pit at the fronto-nasal region ; outlines of nasal bones not 
defined. Side of face conyex. The lateral borders of the anterior nasal aperture mod- 
erately produced, The foramina between the two premaxille near the incisor margin large, 
