190 BULLETIN U4, UNITED STATES NATIONAL MUSEUM 



greater area of the molar crowns are, however, sufficiently obvious 

 features to be diagnostic. 



MYOTIS CHILOENSIS CHILOENSIS (Waterhonse) 



Yesperiilio chilocnsis Waterhouse, Zool. Voyage H. M. S. Beagle, pt. '^, 

 Mammalia, p. 5, pi. 3, 1838. — Temminck, Mouogr. de Mamm., vol. 2, p. 271, 

 1840.— Gervais, in Gay's Hist. Chile, Zool., vol. 1, p. 42, 1847; Atlas, 

 Mammalogie, pi. 1, figs. 3, 3a ; Exped. dans I'Am^rique du Sud du Castelnau, 

 Zool., Mamm., p. 83, pi. 15, figs. 4-Ad, 1855 (part). — Dobson, Catal. Chirop- 

 tera Brit. Mus., p. 322, 1878. — Wagner, Schreber'.s Siiugth., Suppl., vol. 1, 

 p. 537, 1844 ; vol. 5, p. 7->3, 1855. — Lataste, Actes Soc. Sci. Chile, vol. 1 

 (1891), p. 79, 1892.— Trouessart, Catal. Mamm. viv. foss., p. 131, 1897. 



Vespertilio gayi Lataste, Actes Soc. Sci. Chile, vol. 1 (1891), pp. 79, 81, 1892 

 (Valdivia, Chile). 



Myotis diilocnsis Trouessart, Catal. Mamm. viv. foss., suppl., p. 94, 1904. 



My Otis gayi Trouessart, Catal. Mamm. viv. foss., suppl., p. 94, 1904. 



Type locality. — Islets on the eastern side of Chiloe Island, southern 

 Chile. 



Type specimen. — The type was collected in January, 1836, by Lieu- 

 tenant Sullivan. It is not positively known to be extant, bat there is 

 an unregistered specimen in the Tomes collection, British Museum, 

 which may be the one taken by Sullivan. It was received by Tomes 

 from the Zoological Society of London and has been labeled by 

 Thomas as possibh' the type. 



Dhtrihution. — Typical Myotis cMloensis is found on the damp 

 cloud-wrapped coast of southwestern Chile, where the " humid and 

 impervious forests " seemed to Darwin, who brought back the original 

 specimen, most uncongenial to a bat. It was during this same voyage 

 of the '• Beagle " that Darwin saw a small bat at Tierra del Fuego, 

 but did not capture it. 



Diagnosis. — A dark, saturate race ; size small ; back lacking almost 

 entirely the shining tips to the longer hairs; underparts uniform 

 smoky brown, paling very slightlj^ in the mid-A^entral line. 



Color. — General color above dark brown, nearly " Vandyke brown " 

 (Ridgway, 1912), the bases of the hairs scarcely darker. Below, the 

 general tint is less dark, becoming brownish and gray in the center 

 of the abdomen through the presence of pale tips to the long hairs. 

 The dorsal hairs seem to lack the burnished tips almost completely. 



Mea'Surem£-nts, — For measurements see tables, pages 195 and 196. 



Specimens examined. — Total number 8, from the following 

 localities : 



CHILE: Temueo, Petal, 2 skins, 4 ale. (B. M.), 1 ale. (U.S.N.M.) ; no exact 

 locality, 1 ale. (B. M.). 



Remarks. — Myotis chil&ensis chU'Oensis is the darkest race of the 

 species. Between southern Bolivia and south-central Chile (Tenuico) 



