188 



KXrn AXDERSEX 



summit of the sella. Lateral margins of lancet sliglitly emarginate. 

 Connecting-process and posterior leaf densely covered with rather 

 long hairs. — The usual two mental warts, hut no distinct 

 mental grooves. 



Ears reaching somewhat l)eyond the tip of the muzzle when 

 pressed forwards ; greatest width a little larger than distance 

 from notch on outer margin to tip; outer margin, below the tip, 

 deeply concave; tip ratlier blunt. 



A^'ing-structure on a very high level of development. When 

 comparing the wing-indices with tliose of a primitive species of the 

 simplex and lepidus groups (Rh. fallax may serve as a para- 

 digma of the former, Rh. cognatus of the latter; see wing-indices 

 below, p. 195), the following chief points will be noticed: — 

 First, the third metacarpal is distinctly shortened, and at the same 

 time the fourth and fifth considerably lengthened; second, a very 

 strong shortening of the first phalanx of the fourth digit 

 has taken place, this phalanx being only between and V5 

 the length of the fourth metacarpal (in all primitive Rhinolophi 

 beween V3 find V4 of "the metacarpal); third, all the distal pha- 

 langes are very much lengthened. — This wing-structure is ver}^ 

 nearly the same as in Rh. lander i and lobatus. 



Wing-membranes inserted on the tarsus. 



Tail short, about equal to the length of the lower leg; tip of 

 tail scarcely projecting l)eyond the membrane. Posterior margin 

 of uropatagium, owing to the shortness of the tail, concave. 



Skull of the lander i-lobatus pattern , but very much larger. 



Dentition: — p.^ half in row, a trifle higher than the cingula 

 of the adjacent premolars, p^ and p^ separated, p- quite in row% 

 the cusp (unw^orn) represented by an exceedingly small tubercle. 



Affinities. — Rh. alcyone is closely related to Rh. landeri 

 and lobatus, but distinguished, primo visu, by its much larger 

 size. For further remarks see below^, under Rh. lobatus. 



6. Rhiaolopliiis lolbatus, Ptrs. 



1852. Rhinolophus lobatus, Peters, Naturwissenschaftliche Reise nach 

 Mossambique, Saugeth., p. 41, pi. IX, pi. XIII, figs. 16, 17. 



1. ad.; in alcohol. Pozzi di Sancurar, Gallaland; Febr. 21, 1896. Collected 

 by Capt. V. Bottego. Museo Civico, Genoa ('). 



(1) This is the same specimen as recorded by Oldfield Thomas in Ann. Mus. Civ. 

 Genova (2) XVn {Nov. 1896) p. 105 {Hipposiderns eiiryalc, by a lapsus calami). 



