54 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



places in Massachusetts; Mount Desert Island, Macliias, Northeast 

 Harbor, Maine; Manchester, Vermont: In Dr. C. W. Johnson's 

 collection, specimens from Pennsylvania and New Jersey: In the 

 collection at the Museum of Comparative Zoology at Cambridge, 

 Massachusetts, a long series from Vermont, Massachusetts, New 

 Jersey, and several localities in Virginia: In the collection of Prof. 

 J. S. Hine, one specimen from Wauseon, and another from Johnson's 

 Island, Ohio: In my collection, specimens from Lunenburg and 

 Amherst, Massachusetts; Shenadoah River, Clarke County, and 

 Great Falls, Virginia; and Columbus, Ohio. 



European specimens determined by Professor Bezzi and deposited 

 in the National Museum, I have examined and find to differ from 

 the North American specimens only in possessing several rather 

 weak marginal macrochaetae on the first and second abdominal 

 segments lateral to the strong median marginal pairs. This in my 

 opinion is not of sufficient significance to be considered a specific 

 difference. 



The identity of the American species with the European campestris 

 was pointed out to me by Dr. J. M. Aldrich. In this country it has 

 long been confused with leucoce/phala. Apparently Thompson had 

 campestris in mind in his short paper on M. lateralis,^^ but a careful 

 comparison with the description of Macquart indicates that the latter 

 refers to another species. The synonomy submitted is after Bezzi 

 and Stein; the types have not been examined by me. 



METOPIA INERMIS, new species 



Male. — Front in the single specimen measured 0.32 of head width; 

 front, face and bucca gray pollinose; frontal vitta black, at lowest 

 orbitals twice width of parafrontal; about ten bristles in frontal 

 row which extends to middle of second antennal joint, with one or 

 two bristles in the angle of divergence; parafrontals with sparse 

 black bristly hairs to insertion of arista; facial ridges with two or 

 tlu-ee bristles not extending above the lowest fourth; antennae black, 

 third joint three times length of second; arista thickened on basal 

 third, penultimate joint slightly longer than broad; in profile, bucca 

 wider than parafacials at narrowest and equal to one-sixth eye height, 

 front projects forward from eye for distance greater than one-third 

 horizontal eye diameter; palpi black, distinctly larger than thickened 

 part of arista. Thorax gray pollinose, notum black, subshining, 

 with four broad black vittae; scutellum with the intermediate marginal 

 bristles larger than the equal apical and lateral pairs; small preapicals 

 present. Abdomen black; last three segments with black polished 

 apices and densely gray pollinose bases, the intermediate segments 

 each marked with a series of three triangular spots coalesced at apex 



'0 Canad. Ent., vol. 43, pp. 313-314, 1911. 



