138 



CHIEOPTERA 



leaf and absence of tragus. The skull differs from that of all 

 other members of the fauna in the short, globularly inflated 

 rostrum and long, projecting maxillaries, between which lie the 



FlS. 26. 



Noseleaf of Rhiaolophvx ferrum-equinum (a), R. hipposideros (b), R. euryale (c), 

 and R. blasii (d). Nat. size. 



horizontal free premaxillaries (often lost in prepared specimens), 

 About 100 forms have been described,* eight of which occur in 

 Europe. 



KEY TO THE EUROPEAN FOBMS OP BHINOLOPHUS. 



Noseleaf with connecting process broadly 

 rounded above ; skull with nasal swellings 

 long, rising gradually above line of fore- 

 head. 

 Forearm over 50 mm. ; condylobasal length 

 of skull over 20 mm. ; sella pandurate ; 

 large upper premolar in contact with 



canine (Greater Horseshoe) R. ferrum-eqitimmi, p. 139. 



Wing relatively long ; forearm 54-58 mm., 

 longest finger 84 to 92 mm. (Southern 



and central Continental Europe) R. f. ferrum-egvimim, p. 142. 



Wing relatively shorter ; forearm 52 to 

 55 mm., longest finger 83 to 88 mm. 

 (England) R. /• imidanus, p. 147. 



* See Andersen, Ann. and Mag. Nat. Hist., 7th ser., svi, pp. 648-662. 



