PLEKOTES. 4S5 



almost e(]uidistant, sixth and seventh, aud jtarticularly seventh and 

 eij^hth, more narrowl)' spaced. Four anterior ridfjes interdental, 

 though with extremities of fourth ridge behind m' ; first ridge at 

 level of canines, second at p\ third at p^, fourth at ra^ Four post- 

 dental ridges serrate, the tirsfc and second (in single individual 

 known) slightly divided in middle. — Fig. 29 shows the probable 

 homologies of the palate-ridges of Flerotes (B) as compared with 

 those oi llousetttis(A) ; the third interdental ridge of Flerotes would 

 seem to correspond to the third and fourth of liousetius ; compare 

 also palate-ridges of Epomoj^is, p. 480, figs. 31 A, li. 



Fig. 29.— Palate-ridges. A, Rousetlus leachi (6.4.3. 12(j), for comparison with B, 

 Plcrvtes aiu:hiet<e (type of species). A }, B | (liuear). 



Ed'ternal characters. — Interfemoral greatly reduced, breadth at 

 middle of tibia scarcely more than breadth of tibia bone ; calcar 

 absent (or rudimentary). External tail apparently wanting (speci- 

 men mounted). Transverse trabeculfe of mesopatagium rather 

 broadly spaced (interspaces about 2 mm.) ; vertical fascise, as 

 crossed by the main internal cutaneous, few (about seven or eight) 

 and broadly spaced. Membranes from sides of back near llauks 

 and from first phalanx of second toe (as in all Epomophorine bats). 

 Other external characters unmodified Epomophorine. 



In the subjoined table the upper row is the Aving-indices of 

 Flerotes (calculated from measurements of one specimen), the second 

 row those of the Ethiopian species of Mousettus, the third those of 

 some typical Oriental species of liousettus. It will be noticed that 

 the poUex, third, fourth, and fifth metacarpals, first and second 

 phalanx of third digit, and first phalanx of fourth and fifth digits 

 are much longer in Flerotes than in llousettios. 



