46 A REVISION OF THE NEARCTIC SCIOMYZIDAE 



cular; arista microscopically pubescent. Palpi with a long apical bristle. 

 Mesopleural bare; pteropleura with strong setulae. Fore coxae with two 

 bristles. Fourth vein with appendage into second posterior cell. Length. — 

 3-4 mm. 



Described from a male from the Middle States, (Osten Sacken) 

 and I feel certain of this determination. 



Specimens Examined. — 2 c?, 4 9 • 



Maine: Machias, July 20, (C. W. Johnson), [B. S. N. H.]. 



Maryland: Cabin John, April 15, (R. C. Shannon), [U. S. N. M.]. 



Subgenus GRAPHOMYZINA Macquart 



1835. Macquart, Hist. Nat. Ins., Dipt., ii, 558. 



I cannot find any satisfactory characters for separating this 

 group generically from the foregoing, although the type-species, 

 Sciomyza limhata Meigen (1830), is very distinct in its horizontal, 

 oval eyes and sharp vertical margin. Of our species, guttata is 

 the most typical and probably a true Graphomyzina, but I do 

 not think propriety will be seriousl}^ endangered by including 

 other species with distinct wing maculation, such as nana, strigata, 

 and niaculata. The latter differs from the former two in having the 

 marginal cell marked with isolated fuscous spots, and is not uni- 

 formly clouded. Here is also included albovaria, but this species 

 is evident peripheral in position and is placed next to those in 

 Melina proper. 



Melina (Graphomyzina) albovaria Coquillett (PI. I, fig. 4.) 



1901. Sciomyza albovaria Coquillett, Proc. U. S. Nat. Mus., xxiii, 616. 



cf . Dark, brownish; frons, especially anteriorly, except antennae, face, 

 cheeks, antennae, humeri, halteres, apices of abdominal segments, fore coxae, 

 knees, femora and tibiae except bases and apices, and all tarsi, pale. Wings 

 with fuscous markings as figured (fig. 4). There are generally one or more 

 supernumerary cross-veins in the first posterior cell. 



Opaque to subopaque. A velvety black orbital spot at each antenna; 

 shining black spot above epistoma, and a brown spot on cheeks. Mesonotum 

 olive gray with distinct brown vittae; scutellum brown on disk; pleura with 

 two broad brown stripes, leaving the humeri and upper part of mesopleura 

 yellow; mesopleura bare. The two frontal bristles approximated. Length. — 

 3 to 5 mm. 



9 . Similar but the four apical joints of fore tarsi are black, the basal one 

 white. 



Described from the two sexes from New York, New Hampshire 

 and North Carolina. Type in the United States National Mu- 



