ABT. 11. FLIES OF THE FAMILY CLUSIIDAE MELANDER AND ARGO. 17 



19. CLUSIODES CALEDONICA Collin. 



Heteroneura caledonica Collin, Ent. Mag., vol. 48, p. 106, fig. 1 (1912). 



Resembling alhimana, face, palpi and antennae yellow, a spot at 

 base of arista, two fronto-orbitals, the anterior one-half the length 

 of the posterior, cruciate bristles midway between the fronto-orbitals, 

 vibrissa not spike-like. Thorax of both sexes dark, hypopygium 

 large, lamellae twice as long as wide and recurved apically. Posterior 

 legs yellowish. 



Hahitat. — Scotland. 



20. CLUSIODES GENTILIS Collin. 



Heteroneura gentilis Collin, Ent. Mag., vol. 48, p. 107, fig. 2 (1912). 



Resembling alhimana, face darkened, palpi and antennae yellow, 

 a spot at base of arista, two fronto-orbitals, the cruciate bristles 

 nearer the posterior fronto-orbitals, vibrissae not spike-like. Thorax 

 of both sexes dark, hypopygium large, lamellae more than half as 

 wide at tip as at base and not recurved. Posterior legs darkened. 

 Wing cloud relatively restricted. 



Hahitat. — England. 



21. CLUSIODES NIGRA, new species. 



3Iale. — Front brownish, orbits paler, cheeks, mouthparts and 

 antennae yellowish, the last brownish at the insertion of the black, 

 microscopically pubescent arista; four rather long buccal setae, 

 vibrissae broken, but judging from the socket not excessive, three 

 fronto-orbitals, postverticals present, head bristles strong and black. 

 Notum black, humeri and lateral margin whitish, pleurae entirely 

 black, one strong presutural and tv/o postsutural dorsocentrals. 

 Abdomen black, hypopygium small, globose, lamellae rounded tri- 

 angular. Legs piceous, front coxae whitish, posterior coxae fuscous, 

 hind tarsi brown. Wings subhyaline, the apical third and the area 

 about the two crossveins brownish, sections of the evanescent fifth 

 vein 1.1:1; halteres yellow. Length 4 mm. 



Holotype. — In National Museum collection, from Rio Ruidoso, 

 White Mountains, New Mexico, altitude 6,500 feet, August, collected 

 by C. H. T. Townsend, Cat. No. 26262, U.S.N.M. 



22. CLUSIODES (CLUSIARIA) APICALIS Zetterstedt. 



Heteroneura geomyzina, var. apicalis Zetterstedt, Dipt. Sc, vol. 7, p. 2189 (1848). 

 Heteroneura geomyzina Meigen, Syst. Bes., vol. 6, p. 129, in part (1830). — Loew, 



Wien. ent. Mouats., vol. 1, p. 54 (1857); Berl. ent. Zts., vol. 8, p. 345 (1864). 

 Hereroneura apicalis Czerny, Wien. ent. Ztg., vol. 22, p. 79, pi. 1, figs. 3, 6 (1903). 



Front brownish, antennae yellow, brownish at insertion of the 

 microscopically pubescent arista, orbits and posterior portions of the 

 cheeks yellowish, face and anterior portions of cheeks forming a black 

 triangle, mouthparts whitish, buccal hairs almost as stout as the 



