278 Professor Williston on the 



2. Ceratopogon pygmaeiis, n. sp. (PI. IX., fig. 37, wing.) 



5 . Shining black ; wings hairy ; first and third veins closely 

 approximated, terminating before the middle of the wing. Meta- 

 tarsi nearly as long as the following joints together. Black ; 

 antennae brown ; scutellum and halteres yellow, genital organs and 

 legs luteous. Mesonotum shining. Abdomen opaque. Wings 

 hyaline, sparsely hairy. Length 1 mm. 



Three specimens. Sea level. 



3. Ceratopogon venustulus, n. sp. (Ph IX., figs. 38, 



wing; 38a, front leg; S8h, palpus.) 



$ . The third longitudinal vein terminates in the costa 

 towards the tip of the wing, distinctly separated from, and not 

 connected by a cross-vein with, the first longitudinal vein ; front 

 femora with spines on the inner underside : claws not denticulate, 

 and without pulvilli ; wings bare. Deep black. Antennae reddish- 

 brown, slender ; if turned backward, reaching about to the middle 

 of the mesonotum. Mesonotum deep shining black. Abdomen 

 opaque, black, elongate. Halteres black. Legs black ; the base 

 of the femora, and the tibiae more or less yellowish; first two or 

 three joints of the tarsi yellow or luteous ; hind tibiae with fine, 

 not very long, black hairs on the outer side ; metatarsi slender, as 

 long as the three following joints together. Wings nearly hyaline, 

 bare, l^-l^^ mm. 



Five specimens. Sea level. May. In one of the 

 specimens, the legs are yellow throughout, but I do not 

 distinguish oi;her differences. It is possible that this 

 species is the same as C. trivialis, Loew, but the 

 difference in size and the colour of the tarsi render 

 the identity doubtful. 



4. Ceratopogon punctipennis, n. sp. (PI. IX., fig. 39, wing.) 



c^, ?. Wings bare ; one subcostal cell, the third vein is well 

 separated from the first, and terminates beyond the middle of the 

 wing ; prefurca of fourth vein obsolete or nearly so ; first joint of 

 the tarsi elongate, fourth short, fifth elongate ; pulvilli wanting. 

 Pluraosity of the male antennae yellow ; terminal joints in both 

 sexes black, the basal joint reddish. Face and proboscis dark 

 brown ; palpi slender, the second joint elongate. Thorax black ; 

 mesonotum opaque, with whitish pubescence, variable in different 

 lights. Abdomen deep brown or black, with a whitish, variable 



