306 Zoological Society. 



Arctibeus leucomus, n. sp. 



Grey brown, paler beneath ; axilla whitish ; tuft of hair on the 

 side of the neck, near the shoulders, pure white ; hair of back grey 

 brown, with darker tips ; the arms, and upper and lower surface of 

 membranes near the sides, hairy ; the interfemoral membrane rather 

 wide, hairy above ; nose-leaf ovato-lanceolate, longer than broad, 

 with a thick midrib ; ears rather large, rounded ; tragus oblong, 

 toothed on the outer side. 



Inhab. Brazils. 



I received this specimen under the name of Phyllostoma brevicau- 

 datum, but it cannot be of that species, as it has no appearance of 

 any tail. It agrees with P. Neuwied's figure in having a rather wider 

 interfemoral membrane than the other Arctibei, but it differs from it 

 in the membranes being much more hairy, and in the absence of the 

 peculiar white, epaulet-like spots. 



Length of tarsus 7|"' ; foot 5"'; wing-bone 1" 5'"; thumb 6'". 



Nyctiplanus, n. g. 



Tail none ; interfemoral membrane none ; head short ; nose-leaf 

 lanceolate, erect ; lower lip entire, with a triangular group of warts 

 in front ; cutting teeth ^ ; ears lateral, separate ; tragus denticu- 

 lated ; wings broad ; index finger one-jointed, middle finger four- 

 jointed; thumb elongate, lower joint short, inclosed, upper joint elon- 

 gated, slender, free ; feet moderate, toes equal, compressed. 



This genus has the same kind of nose-leaf as Phyllostoma, but dif- 

 fers from all the genera with that form of nose-leaf in having no 

 interfemoral membrane. In this character it agrees with Diphylla 

 and Stenodema ; but these genera only have a scarcely elevated nose- 

 leaf. 



Nyctiplanus rotundatus, n. sp = 



Dark brown, beneath paler ; hair yellowish brown, with dark tips ; 

 of the under side paler, with pale tips ; of the sides of the body dark 

 blackish brown ; the fore-arm above and below, and the upper part 

 of the wing- membranes near the body and on the side of the legs 

 hairy ; nose-leaf ovate, lanceolate, about as long as broad ; apex 

 acuminated ; ears rather acute, naked ; tragal lanceolate, acute. 



Inhab. Brazils. 



Length of wing-bone 1" 1^"; tarsus Si'"; foot 5'"; thumb 5'". 



I received this specimen under the name of Phyllostoma rotunda- 

 turn, which is probably the MS. name of some German zoologist. 



3. Description of a new Heron. By John Gould, Esq., 

 f.r.s. etc etc. 



ArDEA LEUCOPHiEA, n. Sp. 



Forehead and upper portion of the crest white ; sides of the head 

 and lower portion of the crest deep glossy black ; neck white, washed 

 with vinous, and with a series of lanceolate marks of black disposed 

 alternately down the front ; all the upper surface, wings and tail dai'k 

 grey, the lanceolate feathers of the back fading into white ; edge of 



