Il8 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 51 



normal, and this, taken with the blackish tegulse and wing- streaks, 

 would point to it as a distinct form. 



Calliphora irazuana, sp. nov. 



One female, Irazu, Costa Rica, Schild and Burgdorf. 



Length, 11.5 mm. Buccae black, beard black. Third posterior 

 intra-alar bristle wholly absent. Parafrontals black, with a soft 

 brassy brown pollen on front half. Parafacials dark dragon's- 

 blood red, facial plate blackish. Palpi reddish yellow, antennae 

 blackish, inner basal portions of third joint paler. Front equilateral, 

 one-third head width. Thorax and scutellum black, faintly silvery 

 on front and lateral edges. Tegulae and wing bases blackish. Ab- 

 domen purplish blue. Legs wholly soft black, as are also the pleurae, 

 with hardly a trace of silvery. 



Type.— Cat. No. 10,886, U. S. N. M. 



EUCALLIPHORA, gen. nov. 



Proposed for Calliphora latifrons Hough. Differs from Calli- 

 phora in possessing two strong pairs of ocellar bristles. This is a 

 character of considerable importance in the Muscoidea, especially 

 in the higher groups, and may well form a generic distinction here. 



Bucalliphora latifrons Hough. — A large series of this interesting 

 species, consisting of some sixty specimens, was brought from 

 Kaslo. British Columbia, by Messrs. Dyar, Caudell. and Currie. 

 The character of the second pair of ocellar bristles is constant in all. 



There are also two females in the U. S. X. M., collected by H. S. 

 Barber, Las Vegas Hot Springs, N. Mex., and Fieldbrook, Gal., 

 which both belong to this genus and are apparently this species. 



Genus Lucilia Robineau-Desvoidy 



There are several >pecies of this genus, notably sericata (Meigen) 

 Hough and sylvarum (.Meigen) Hough, which have a well-devel- 

 oped second pair of ocellar bristles. The latter are remarkably 

 strongly developed in these two species, and were it not for the pres- 

 ence of certain intermediate forms, like pilatci Hough, and especially 

 oculata, n. sp., they would constitute a well-marked new genus sep- 

 arable on this character. But in pilatci the second pair in the male 

 is hardly to be differentiated in strength from some of the other 

 pairs of divergent ocellar hairs, and in oculata the male shows no 

 second pair, though the females of both possess the character quite 

 distinctly. As genera are mere matters of convenience, and these 

 forms do not otherwise differ in points of generic value, the charac- 



