r - f 
ANNUARIO 
DEL 
MUSEO ZOOLOGICO DELLA R. UNIVERSITÀ DI NAPOLI 
( IST uova Serie ) 
VOLUME 3. 
Num. 3. 26 Aprile 1909. 
GERRIT S. MILLER 
(TX. S- KTation.al Museum, XVashington XD. C.) 
Note on thè Vespertilio oxygnathus of Monticelli. 
[Ricevuto il 20 Marzo 1909] 
Two members of thè Myotis myosotis r ) group occur in Europe, a larger animai 
ranging from Germany southward to Spain and Sicily and a smaller form which 
so far as know is confined to thè Mediterranean region. The former is thè true 
Myotis myosotis , thè latter thè animai to which Professor Monticelli has applied 
thè name oxygnathus * 2 ). The essential characters of thè two species are as follows; 
Myotis myosotis (Bechstein) 
Forearm, 57-64; third finger, 100-109; ear from meatus, 27-28; width of ear T 
17.6-19; condylobasal length of skull, 22-23.6; mandible, 17.8-19; maxillary 
toothrow (exclusive of incisors), 9.8-10.6. 
Myotis oxygnathus (Monticelli) 
Forearm, 54-60; third finger, 86-98; ear from meatus, 23-26; width of ear 
14-17; condylobasal length of skull, 18.6-21.4; mandible, 15.2-17.2; maxillary 
toothrow, 8.2-9.4. 
I have examined about 75 specimens of Myotis oxygnathus in thè British Museum 
and United States National Museum, also thè type, kindly lent by Prof. Mon- 
p 1797. Vespertilio myosotis Bechstein, Der Zoologe, Heft 5-8, pag. 46, [Thiiringen, Germany],. 
1802. Vespertilio myotis Bechstein, Gemeinn. Naturgesch. Deutschlands, 1, 2d ed., pag. 154 . 
2 ) 1885. Vespertilio oxygnathus Monticelli, Ann. Accad. 0. Costa Aspir. Nat., 1, pag. 82 [Ma- 
tera, Basilicata, Italy], 
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