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PROCEEDINGS OF THE NATIONAL MUSEUM 



Subgenus Plecotus E. GeofFroy Saint-Hilaire 



Vespertilio Linnaeus, 1758, p, 32. (Part.) 

 Macroius Leach, 1816, p. 5. (Nomen nudum.) 

 Plecotus E. Geoffrey Saint-Hilaire, 1818, pp. 112, 118. 

 Plecautus F. Cuvier, 1829, p. 415. 



Type Species: Vespertilio auritus Linnaeus. 



Distribution: Temperate parts of Eurasia and northern Africa. 

 Norway, Great Britain, Ireland, Portugal, and Canary Islands east 

 to Kamchatka, and Japan; north to Kola Peninsula, lat. 60-62°N. 

 in Siberia, Sakhalin, and Kamchatka; south to Canary Islands, 

 French Morocco, Tunisia, Sudan, Israel, northern Iran, northern 

 Pakistan, Nepal, Sinkiang, Szechwan, Hopeh, Korea, and Japan 

 (fig. 13). Altitudinal range, sea level to 10,500 feet. 



Description: Supraorbital region sharply ridged (fig. 4); tem- 

 poral ridges coalesce to form a sagittal crest; rostrum narrow 'com- 

 pared with other subgenera of Plecotus, arched, and withoutjmid- 

 dorsal concavity; brain case relatively narrow and shallow; zygoma 

 relatively thick and strong in appearance, with postorbital expansion 

 in middle third of arch; median postpalatal process a poorly devel- 

 oped spine; basial pits absent; auditory buUa circular in outline. 



I* with accessory cusp (fig. 2) ; P^ relatively large, considerably 

 exceeding cingulum of canine in height; P* longer than wide; space 

 between posterointernal edge of P* and anterior edge of M^ almost 

 equals lingual length of P*; third commissure of M^ equal to or shorter 

 than second commissure; metacone of M^ not prominent (reduced to 



Figure 13. — Distribution of Plecotus auritus Linnaeus. Solid symbols, type localities. 

 1, P. a. auritus Linnaeus; 2, P. a. tenerifae Barrett-Hamilton; 3, P. a. meridionalis 

 Martino; 4, P. a. christiei Gray; 5, P. a. mordax Thomas; 6, P. a. wardi Thomas; 7, P. a. 

 puck Barrett-Hamilton; 8, P. a. homochrous Hodgson; 9, P. a. kozlovi Bobrinskii; 10, 

 P. a. arid Thomas; 11, P. a. sacrimontis G. M. Allen. 



