10 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64 



flavous. Abdomen black except at base, hypopygium black, the 

 long lamellae yellow. Legs yellow, hind tibiae shghtly brownish, 

 apical and preapical spurs of middle tibiae strong, underside of fore 

 femora fimbriate with setae. Wings lightly brownish, stronger on 

 apical tliird, first vein strongly setose, sections of fourth vein 5: 3: 15, 

 of fifth vein 5: 3, fifth and anal veins not reaching margin. Length 

 3.5 mm. 



Habitat. — St. Vincent, West Indies. Described from a cotype 

 specimen in the possession of Cornell University. Doctor Williston 

 suggested that this species v/as a composite of several forms. In 

 addition to the present form which seems most typical, the species is 

 here segregated into SoharocepTiala histrigata Kertesz and S. xanthome- 

 lana, new species, which see. 



5. Genus CLUSIA Haliday. 



Clusia Haliday, Ann. Nat. Hist., vol. 2, p. 188 (1838).— Schiner, Fauna Austr., 



vol. 2, p. 36 (1864).— CzERNY, Wien. ent. Ztg., vol. 22, p. 87 (1903).— Malloch, 



Proc. Ent. See. Wash., vol. 20, p. 3 (1918). 

 Eeteromyza in part, Meigen, Syst. Bes., vol. 6, p. 45 (1830).— Walker, Ins. Brit., 



vol. 2, p. 163 (1853). 

 Macrochira Zetterstedt, Ins. Lapp., p. 784 (1838); Dipt. Sc, vol. 7, p. 2681 (1848). 

 Peratochaetus in part, Rondani, Dipt. Ital. Prodr., vol. 1, p. 119 (1856); Arch, di 



Canestrini, vol. 3, pt. 1, p. 42 (1863); Bull. Soc. ent. Ital., vol. 6, p. 250 (1874). 

 Stomphastica in part, Loew, Berl. ent. Zts., vol. 8, p. 336 (1864). 



Relatively large species, three fronto-orbitals, the foremost pair 

 converging, cruciate bristles present, postverticals absent, ocellars 

 long, prothoracic bristles strong, two posterior dorsocentrals, four or 

 six scutellars all long, no prescutellars, a row of mesopleural setae 

 present, preapical bristle of middle tibiae very small, crossveins 

 distant, lunule covered. 



Genotype. — Clusia Jiava Meigen (Eeteromyza.) 



KEY TO THE SPECIES OF CLUSIA. 



1. Abdomen without conspicuous black lateral spots; face yellow; pleurae usually 



yellow 2 



Abdomen with more or less conspicuous shining black lateral spots or stripes; face 

 of male black, of female bimaculate; upper pleurae with black vitta 3 



2. Arista very finely short-pubescent; antennae yellow; palpi yellow; pleurae not 



vittate with brown. (Western N. Amer.) occidentalis Malloch. 



Arista evidently pubescent; upper side of antennal third joint and apex of female 

 palpi blackish; pleurae usually brown above. (Eur.) flava Meigen. 



3. Wings with two brown or blackish bands, one slightly beyond middle and the 



other at apex, connected along costa; male with bristles of anterior and posterior 

 flexor surfaces of front femora subequal in length; sides of abdomen usually 



spotted instead of striped. (Eastern N. Amer.) czernyi Johnson. 



Wings with only one brown band, the apical one; males with posterior flexor bristles 

 of front femora much stronger than the anterior ones; sides of abdomen usually 

 striped. (Eastern N. Amer.) lateralis Walker. 



