220 BULLETIN 57, UNITED STATES NATIONAL MUSEUM. 
Upper incisors simple, the four teeth lying almost in the same line, 
the outer well developed, but considerably smaller than the inner and 
separated from canine by a space about equal to the diameter of its 
crown; lower incisors trifid, their crowns strongly imbricated and 
increasing regularly in size from first to third, the series continuous 
between canines, and strongly, almost angularly convex. Canines 
well developed, simple. Cheek teeth strictly normal ; pm 2 minute, 
crowded in inner angle between canine and large premolar, pm 4 with 
very small inner anterior cusp ; m 1 and m 2 without hypocone, and 
with metacone, especially in m 4 , unusually large, m 3 with rather 
more than half the crown area of m 1 or m 2 , its mesostyle, metacone, 
and three commissures well de- 
veloped; lower molars with the 
cusps normal in size and posi- 
tion. Skull (fig. 36) with rather 
short, deep braincase and broad, 
low rostrum, the length of which 
is about two-thirds that of brain- 
case ; a slightly angled ridge 
along edge of anterior portion 
of orbit ; palate rising rather 
noticeably in front, and floor of 
braincase sloping upward poste- 
riorly, so that the two surfaces 
are set at a distinct angle with 
each other; audital bullse small; 
basisphenoid pits shallow and 
indistinct; palatal emargination 
broad and shallow, much as in 
Lasiurus / nares moderate, 
slightly longer than broad. Ex- 
ternally characterized by the 
short, broad head; low, rounded 
ears with tragus much widened above (its width along upper border 
nearly equal to length of anterior margin) and with antitragus con- 
tinued forward to angle of mouth, where it terminates in a conspicu- 
ous lobe; swollen muzzle and chin, each of which is separated from 
wide lip by deep narrow groove ; and slight or no graduation of meta- 
carpals (fifth never less than third by more than one-eighth or one- 
tenth length of forearm). 
Species examined. — Chalinolobus tuberculatus (Forster), G. signi- 
fer Dobson, C. gouldi (Gray), and C. nigr'ogriseus (Gould). 
Remarks. — In certain respects this genus and the next resemble 
Lasiurus and Dasypterus , particularly in the form of the head and 
ears and in the general structure of the skull. Externally the two 
Fig. 36.— Chalinolobus tuberculatus. Adult 
MALE. DUNNEDIN, NEW ZEALAND. NO. 38031. 
X‘2f. 
