146 
Psyche 
[June 
Ostomopsinae Sen Gupta and Crowson 
This monotypic subfamily is considered to be a tribe of Murmi- 
diinae by Sen Gupta and Crowson (1973), but its relationship to 
the latter group is somewhat unclear. It is here treated as an inde- 
pendent subfamily. 
Ostomopsis Scott 
This genus was described by Scott (1922: 250-253, pi. 19, fig. 11) 
for the Seychelles species O. solitaria, and has been redescribed and 
illustrated by Sen Gupta and Crowson (1973: 400-402, figs. 43-49) 
on the basis of new material from New Caledonia and Florida. 
There is little to add to the generic description provided by the 
latter authors, except that the hind edge of the pronotum has a raised 
margin and the scutellum is transverse. Also the antennal club is 
broader than their illustration suggests, and it appears to be pinched 
in the middle due to the presence of lateral sensillae ( see fig. 4). 
Species of Ostomopsis may be distinguished from other Cerylon- 
idae by the frontoclypeal suture, internally and externally open pro- 
coxal cavities, and 3-segmented tarsi, and the lack of femoral lines, 
antennal cavities, and a transverse line on the vertex. Ostomopsis 
solitaria Scott is known only from the Seychelles, but specimens ap- 
pearing to be conspecific have been seen from New Caledonia and 
the Loyalty Islands. The Neotropical species described below extends 
the range of the genus into the New World. 
Ostomopsis neotropicalis, New Species 
(Fig. 24) 
This species may be distinguished from O. solitaria by the smaller 
size (less than 1.10 mm.), somewhat more elongate body, and nar- 
rower, less explanate, pronotal margins with more irregularly serrate 
edges. 
Description. Length 0.95-1. 10 mm. Color yellowish-brown; vesti- 
ture of dense, suberect, yellowish hairs, which are about three-fifths 
as long as scutellar base, intermixed, especially at sides, with much 
longer hairs exceeding scutellar base in length. Antennal club (fig. 4) 
about as long as wide and twice as wide as the segment preceding it. 
Pronotum about 0.60 X as long as wide, widest at posterior third, 
sides weakly rounded, apical angles slightly produced and acute; 
lateral margins moderately broad and explanate, but less so than in 
O. solitaria, the edges coarsely and irregularly serrate; disc slightly 
