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Class 1. MAMMALIA. 
Sub-class WONODELPHIA. 
Order CHIROPTERA. 
Sub-order MJCROCHIROPTERA. 
Family RHINOLOPHIDZ. 
. Rhinolophus hipposideros (Sechst¢.). Lesser Horse- 
shoe Bat. 
. Rhinolophus ferrum-equinum (Schred.). Greater Horse- 
shoe Bat. 
The occurrence of either of the Horse-shoe Bats in York- 
shire has never yet been authenticated, although both have 
been occasionally reported: such specimens as I have 
been able to examine have proved to be of some other 
and commoner species. 
Fam. VESPERTILIONIDA. 
. Synotus barbastellus (Sci7ed.). Barbastelle. 
. Plecotus auritus (Z.). Long-eared Bat. 
Generally distributed, common. In some localities is more 
numerous than the pipistrelle. 
. Vesperugo serotinus (Scired.). Serotine. 
. Vesperugo discolor (WVaiéterer). Particoloured Bat. 
. Vesperugo noctula (Screb.). Noctule. 
Widely distributed and not uncommon, becoming less 
numerous in the north and west. Found at 700 feet 
elevation at Carperby in Wensleydale. Its range in 
Britain does not appear to extend further north than 
Yorkshire. 
