346 



low, coxae, extreme bases of hind femora, a band beyond middle of 

 fore and mid femora and their extreme apices, the apical fourth of 

 hind femora, a band on basal half of fore tibife and the narrow 



apices of all tibiae blackened 8. apicata. 



9. All femora with 1 spine 9. harheri. 



— At least fore and hind femora with more than one spine 10 



10. Halteres black or brown 11 



— Halteres white or yellow 13 



11. Mesonotum brown, with dense gray pruinescence, a brown median 



vitta on anterior half and a transverse roAv of brown spots at mid- 

 dle I scutellnm yellow 10. pulverea. 



— Mesonotum and scutellum black 12 



12. All femora spinose on almost their entire length ; mesonotum opaque 



11. joJinsoni. 



— Mid femora generally devoid of spines, the other pairs spined on 



apical half ; mesonotum with 3 glossy vittae, the remaining portions 

 with distinct white pruineseence 12. dentata. 



13. Abdomen white or yellowish, sometimes fuscous-tinged ; fifth tarsal 



joint unspined 14 



— Abdomen black; fifth tarsal joint with distinct ventral spines 



13. setipes. 



14. Mid and hind legs with their femora and tibiae entirely black 



14. alhidorsata. 



— Mid and hind legs pale yellow, their bases and apices blackened .... 



15. setidosa. 



I. Bezzia punctipennis Williston 



Ceratopogon punctipennis Williston, Trans. Ent. Soc. Lond., 1896, p. 278. 

 Bezzia ptinctipennis (Williston) Malloeh, Jour. N. Y. Ent. Soc, A'^ol. 22, 1914, 



p. 282. 



Described from St. Vincent, British West Indies, and not subse- 

 quently recorded. 



2. Bezzia cockerElli, n. sp. 



Female. — Brownish black, slightly shining. Head black, face yel- 

 lowish brown, basal 2 joints of antennae black, the flagellum missing. 

 Thorax with dense yellowish pruineseence almost obscuring the 

 ground color; scutellum yellow. Abdomen distinctly shining, not 

 pruinescent. Legs yellow, coxae, trochanters, fore and mid knees, 

 apices of hind femora and the narrow apices of all tibiae and of the 

 basal two tarsal joints blackish brown, apical three tarsal joints black. 

 Wings clear, veins yellow. Halteres dark brown. 



Eyes separated by about one sixth the head-width. Mesonotum 

 with microscopic closely placed black hairs on disc, each of which is set 



