74 BULLETIN 5*7, UNITED STATES NATIONAL MUSEUM. 



as small, relatively, as in Kiodotus; inner lower incisors smaller, con- 

 trasting with outer teeth almost as much as in Syconycteris, but sepa- 

 rated in median line by a space equal to that occupied by each pair. 

 Upper canines with broad, well-defined, longitudinal groove on 

 anterior face, bounded on each side by a sharp ridge; cingulum ill 

 defined; no trace of secondary cusps. Lower canine with barely 

 indicated furrow on outer side. Anterior upper cheek tooth (pm 2 ) 

 scarcely larger than incisor, close to base of canine. Anterior lower 

 premolar (pm 2 ) considerably larger than corresponding maxillary 

 tooth (its diameter about twice that of i 3 ), but similarly crowded 

 against canine. Middle upper premolar (pm 3 ) conspicuously larger 

 than the other cheek teeth, separated from pm 2 and pm 4 by spaces 

 slightly greater than length of its alveolus. Other teeth essentially 

 as in Kiodotus. 

 Species examined. — M elonycteris melanops Dobson. 



Genus NESONYCTERIS Thomas. 



1887. Nesonycteris Thomas, Ann. and Mag. Nat. Hist., 5th ser., XIX, p. 147, 



February, 1887. 

 1899. Nesonycteris Matschib, Flederm. des Berliner Mus. fiir Naturk., p. 91. 



Type-species. — Nesonycteris woodfordi Thomas. 



Geographic distribution. — Solomon Islands. 



Number of forms. — One. 



Characters. — Like 31 elonycteris, but index finger without claw, and 

 lower incisor only 1-1. (The only known species is nearly uniform 

 yellowish brown throughout, with no conspicuous contrasts of color.) 

 Dental formula : 



-2 3. 1. -23456- . 2-2 1-1 3-3 2-2 



-2-. 1. -2 3 4 5 6 7*l-l' c l-l^ m 3-3' m 3-3 -32- 



In form the teeth closely resemble those of M 'elonycteris. Lower 

 incisors almost in contact with canines, leaving a wide median space. 

 Species examined. — Nesonycteris woodfordi Thomas. 



Genus NOTOPTERIS Gray. 



1859. Notopteris Gray, Proc. Zool. Soc. London, p. 36. 



1878. Notopteris Dobson, Catal. Chiropt. Brit. Mus., p. 92. 



1899. Notopteris Matschie, Flederm. des Berliner Mus. fiir Naturk., p. 88. 



Type-species. — Notopteris macdonaldii Gray. 



Geographic distribution. — Fiji Islands, New Hebrides, and Caro- 

 line Islands. 



* Number of forms. — Only the type is now known. 

 Characters. — Dental formula : 



-2 3. 1.- 2345--.2-2 1-1 3-3 l-l_ no 



- 2 -. 1. - 2 3 4* 5 6 - ? ' I - 1' 1 - V P " 1 3^3' m 2^2 



