AMERICAN DIPTEEA. 39 



19. Ocy|>tainus <liiiii<IiafiiM Fab. 



Kingston, Jamaica. One female, taken March 18, in coll. C. B. 

 Taylor. Length 7 mm. The abdomen has a purplish reflection. 



20. Ocy|)taiiiu»« ftiscipeiiiiis Say. 



Jamaica (Bowrey); one male. Agrees well with Williston's de- 

 scription. The subapical hyaline triangle of the wings is normal, 

 the rest of the wings wholly brown, with two or three faint and 

 short streaks near middle, the axillary and anal (angle; regions 

 paler. 



A female in Mr. C. B. Taylor's coll., taken in Kingston, April 12, 

 appears to belong to the var. fascljjen.iii'< Mcq., the proximal half of 

 the discal cell being hyaline. 



21. Ocyptaiiius iris Austen. 



Cinchona, 5000 feet, Jamaica. One female, taken in June, is de- 

 scribed under this name by Mr. E. E. iVusten, of the British Mu- 

 seum, in Proc. Zool. Soc. London, 1893, pp. 133-134, pi. iv, fig. 1. 



22. Rliiiigia nasica Say. 



Fort Pendleton, W. Va. (Pergande), September 7. One male. 

 Roslyn, A"a., August 21, one male. The face is rather brownish 

 yellow, or yellowish. Scutellum in one is shining black on sides, 

 not on base ; in the other black on sides and base. Wings with a 

 flavous tinge anteriorly. 



23. Voluceila abdoiiiiiialiN Wied., Auss. Zweifl. ii, 196. 



Jamaica (Bowrey . Seven specimens, two females and five males. 

 Bath (Swainson). There is considerable difference in size and some 

 in coloring between the specimens, but I am inclined to refer them 

 all to the same species. The smallest (two males) are 13 nun., but 

 most of them are larger (one is 14 mm., and the other four are 15 

 mm.). 



Length 13-15 mm. Sides of thorax, pre-scutellar marking and scutellum light 

 brown, in some cases (two small males) nearly flavous. The males have disc of 

 thoracic dorsum shining black, but in the females it is more reddish. Abdomen 

 cupreous brown (smaller males) or shining violaceous bluish, venter concolorous. 

 Wings are flavous on anterior portion of basal half, with a moderately square, 

 brown, or dark brown stigmal marking. This marking is, however, in four of the 

 males only flavous. 



This is the species mentioned by Cockerell on p. 259 of vol. i, 

 Journal List. Jamaica, as " Voluceila spiniger [British Museum]." 

 Though the specimens seem to have been so determined at the British 



TRANS. AM. ENT. SOC. XXII. MARCH, 1895. 



