Go 
On 
M. G. A. Boulenger on a new Genus of Ranide. 
Scaphander librartius, Lovén (1846). 
From 85 to 1536 fms. Also throughout the North Atlantic, 
and a Sicilian fossil. 
I am delighted to find that science will be further benefited 
by another Italian exploration of the Mediterranean in the 
course of this summer. 
V.—Description of a new Genus and Species of Frogs of the 
Family Ranide. By G. A. BOULENGER. 
NYCTIXALUS, g. n. 
Pupil vertical. Tongue free and deeply notched behind. 
Vomerine teeth none. Tympanum distinct. Fingers free, 
toes with a rudiment of web; tips of fingers and toes dilated 
into regular disks. Outer metatarsals united. Omosternum 
and sternum with a bony style. Terminal phalanges obtuse. 
Closely allied to Megalixalus, but distinguished by having 
the toes nearly free. 
Nyctixalus margaritifer, sp. n. 
Head rather large, broader than the body; snout promi- 
nent, the tip obliquely truncate backwards and downwards ; 
nostrils close to the tip of the snout; canthus rostralis angu- 
lar; loreal region concave; interorbital space concave, 
broader than the upper eyelid; eye large; tympanum very 
distinct, nearly as large as the eye. Limbs slender; fingers 
rather long, first shorter than second; toes short, with a slight 
web at the base, extending as a narrow fringe along the sides ; 
subarticular tubercles moderately developed ; a very indistinct 
inner metatarsal tubercle. If the hind limb is carried for- 
wards along the body, the tibio-tarsal articulation reaches the 
tip of the snout. Upper surface with very small pearl-like 
scattered tubercles ; upper eyelid strongly tubercular ; belly 
and lower surface of thighs granulate. Dark brown above 
and beneath ; a yellow spot on each scapula; other, smaller, 
yellow spots on the limbs, fingers, and toes; belly marbled 
with yellow. Male without vocal sac. From snout to vent 
35 millim. 
One male specimen in the Royal Museum, Brussels. Pur- 
chased as being from the Hast Indies. 
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