1905.] OF THE GENUS RHINOLOPHUS. 139 
modified, chiefly in two respects:—(1) the third metacarpal is 
shortened ; but at the same time the fourth metacarpal has 
remained the longest (as in all primitive species of hinolophus) ; 
(2) IIT’, IV.’, and V.’?, that is all the distal phalanges, are 
lengthened. Compare the table of measurements of Rh. midas 
and hipposiderus on the one side, with those of minor, lepidus, 
and all their allies on the other (see p. 143). 
Tail rather long, 13 the length of the leg. Plagiopatagium 
inserted on the ankle-joint. 
Colour (somewhat faded in alcohol) probably as light as in 
Lh, blast. 
Skull, In all species of Ahinolophus the cochlee are large, 
making a narrow basioccipital (compare the genus Hipposiderus) ; 
but in Ah. midas and hipposiderus the peculiarity is carried 
to an extreme: the cochlew are so much increased in size as to 
reduce the basioccipital to a linear bridge of bone; in some 
individuals (of Lh. hipposiderus) the cochlee are almost in 
contact. This character alone makes the skull of these two 
species easily distinguishable, at a glance. But in every other 
respect, in the shape, the size, and the teeth, the skull is so 
exceedingly like that of Kh. minor, that there can scarcely be any 
doubt as to the very close relationship of the minor and midas 
types. 
Dentition. On the minor stage :—p, external. A very narrow 
interspace between p, and p,. p quite in row; a small cusp, 
pointing inwards. Upper canine and p* well separated. 
Type. 9 ad. (in alcohol). Jask, Persian Gulf. Presented by 
A. Butcher, Esq. Brit. Mus. no. 94.11.16.1. 
Remarks. The discovery of this highly interesting species seems to 
remove all doubt as to the close affinities of minor and hipposiderus. 
The sella of midas is intermediate between that of minor and 
hipposiderus ; it recalls that of empusa and blasii, which also 
are modifications of the minor-type; to the peculiarly long and 
cuneate lancet we have a parallel in one of the modifications 
of the minor-type described in this paper, viz. Rh. gracilis. 
The geographical habitat of midas is, too, rather intermediate 
between the Oriental minor and the W. Palearctic hipposiderus. 
Rh. midas is, of course, readily distinguishable from Zh. 
hipposiderus by the shape of the sella. In the width of the 
brain-case, as well as in external dimensions, it is like the 
southern, more primitive form of Aipposiderus (Lh. h. minimus). 
27. RHINOLOPHUS HIPPOSIDERUS Bechst. 
Diagnosis. Sella cuneate; summit pointed. Forearm 34:7— 
41°7 mm. 
Details. Breadth of sella at base never more, but generally less, 
than half its vertical height. 
Colow’. (1) Younger, but quite full-grown individuals; skins; 
Cyprus, 8. Carpathians, Switzerland. Very nearly ‘‘ mouse-grey ” 
above; horse-shoe patch faintly, or not at all, indicated; base 
