1892.] ENTOMOLOGICAL NEWS. 145 



A new species of CRIORHINIA and Notes on Synonymy. 



By Dr. S. W. Williston, Lawrence, Kan. 



Griorhinia coquilletti n. sp. J^. — Front separated by nearly the width of 

 the ocelli; ocellar prominence shining black; front below and the face 

 covered with dense, light yellow pubescence and pollen, and, on the sides 

 of the face above, with long, light yellow pile; cheeks broadly shining 

 black. Antennae brownish red, first joint but little longer than the second, 

 third joint much broader than long, produced somewhat acutely above to 

 the base of the arista. Proboscis n^oderately elongate. Thorax deep, 

 shining black; on the dorsum, metallic; the color, however, is largely 

 concealed beneath dense, long pile, which is yellow in front of the wings, 

 both on dorsum and on the pleurae, and black behind the wings. Abdo- 

 men deep black, shining, somewhat metallic, on the fourth segment 

 markedly so; pile long, moderately dense, on the first three segments 

 black, [slightly intermixed on the third], on the fourth segment yellow. ^ 

 Legs deep reddish brown or reddish black; the knees, the narrow base 

 of the tibiae, and the basal joints of the four anterior tarsi yellowish; pile 

 black. Wings brown on the anterior and distal parts; subhyaline behind. 

 Length 9 — 10 mm. 



Hab. — Southern California. The specimen upon which the 

 foregoing description is based, was sent me by my friend, Mr. D. 

 W. Coquillett, who had recognized it as belonging to a new spe- 

 cies. The species is closely allied to C. lupina Will. , but differs 

 in having the first antennal joint less elongated, in having the 

 third joint more acute above, a shorter proboscis, and in the ab- 

 sence of the facial stripes, etc. I have seen but very few species 

 in this family since the publication of my " Synopsis." Several 

 of these, of not a little interest, will be shortly described by Mr. 

 W. A. Snow. Since my studies of the North American forms, 

 however, I have had the opportunity of studying nearly three 

 hundred species from Central America, the West Indies and 

 South America. The nomenclatilre of a few North American 

 species is affected by the results of these studies, as follows: 



Melanostoma stegnnm Say, Journ. Acad. Phil, vi, p. 163; Compl. Wr. ii, 

 P- 358 \^Syrphus\\ Williston, Biol. Centr.-Amer. Diptera, iii, p. \o.=^Me- 

 lanostoma tigrina Osteh Sacken, Western Dipt. p. 323; Williston, Syn- 

 opsis, etc., p. 47, pi. iii, fig. 8. 



Melanostoma mellinum Linn^, etc. I identify M. pruinosum Bigot as a 

 closely allied, but distinct species. 



Baccha clavata Fabricius, Ent. Syst. iv, p. 298 \^Syrphtis\\ Syst. Antl. p. 

 298; Wiedemann, Auss. Zweifl. Ins. ii, p. 94; Schiner, Reise d. Novara, 



6* 



