468 Zoological Society : — 



of a disrupted acapsular nucleus, and under no circumstances 

 ciliated. In each is to be seen a villous appendage, contractile 

 vesicle, and nuclear spot. Length from s^Voth to xeVoth of an 

 inch. 

 Fig. 18. Amoeba engaged in tearing pieces out of an Actinophrys by means 

 of its pseudopodia. /, v, food- vacuole containing a mass so torn oflF. 



N.B. — These figures, although originally drawn to one uniform scale, are 

 onlv uniform here as regards the relative proportions of the structure in 

 eacii example, since it became necessary to modify the size of the various 

 figures in order to accommodate them in a single plate. I would avail 

 myself of the opportunity, however, to express my conviction that varia- 

 tion in the dimensions of the Rhizopods generally is so great, and so de- 

 pendent on purely accidental conditions — that is to say, on conditions 

 involving no physiological difference in the animal — that they ought to be 

 allowed no greater weight in an attempt at classification than the variation 

 in the length of a blade of grass or the height of a thistle. 



Erratum in Dr. Wallich's paper contained in the November Number 

 of ' The Annals.' 



Page 335, fifteenth line from bottom, for " Chilodontes " read 

 " Chilodons." 



PROCEEDINGS OF LEARNED SOCIETIES. 



ZOOLOGICAL SOCIETY. 



Feb. 24, 1863.— E. W. H. Holdsworth, Esq., in the Chair. 



On a New Genus and Species of Leaf-nosed Bats in the 

 Museum at Fort Pitt. By Robert F. Tomes. 



Ill a collection of Bats preserved in spirit, and forming part of 

 the Museum at Fort Pitt, Chatham, which has been submitted to my 

 examination by Dr. Sclater, is one which constitutes a new and well- 

 marked genus of the Phyllostomidce, or Leaf-nosed Bats of the New 

 World. It is more nearly allied to the genus Macrotis than to any 

 other ; but differs from it, among other respects, in having its lance- 

 shaped nose-leaf developed to an enormous extent. I characterize 

 and name it as follows : — 



LoNCHORHiNA, gen. nov. 



Top of the head somewhat elevated ; face depressed ; facial crests 

 complicated, consisting of a very long and pointed posterior leaf, in 

 front of which are two pits, more or less surrounded by prominent 

 fleshy excrescences ; lower lip with a smooth triangular space in 

 front; ears long and broad; longest fnger with four phalanges ; 

 loing-membrane extending to the distal extremity of the tibia, and 

 attached to the os calcis ; fail extending to the whole length of the 

 interfemoral membrane, as in the genera Macrotis and Vespertilio. 



The posterior lanceolate facial leaf is in this Bat of great length, 

 being fully as long as the head of the animal ; it is pointed, and has 



