6 THE CANADIAN ENTOMOLOGIST 



Male. — Length 10 mm.; wing 10 mm. Head, mouth-parts, palpi and 

 antennae black; rostrum short; antennae short, first joint long with grayish bloom 

 above, second joint broadly subconic, joints three to five a little wider than the 

 following joints and, like the latter, moniliform, outer joints somewhat elongate; 

 the whole antennae thinly clothed with short, black hairs, shorter than the 

 respective joints. Front and occiput with a grayish bloom and, especially the 

 latter, beset with black hairs. Neck three-quarters the length of front and 

 occiput, transversely subrugulose. 



Thorax concolorous, subglabrous; the usual stripes are subfoveate, the 

 median stripe of equal width with an irregular, grayish median line; the inter- 

 spaces with grayish bloom and a row of short, grayish hairs, directed outwardly; 

 the grayish bloom is more dense on the posterior portion of the prsescutum, so 

 as to obscure the limitations of the stripes. Scutum, scutellum and postnotum 

 with grayish bloom. Pleura with grayish bloom, dorso- pleural membrane 

 obscurely yellowish. Halters entirely pale, yellowish. Legs of moderate 

 length and robustness, sordid yellow with black pilosity; coxae yellowish-brown, 

 darker anteriorly; anterior and middle femora infuscate in apical fifth the 

 posterior in the apical fourth; apices of tibiae and outer tarsal joints infuscate. 

 Wings light brownish, costal portion more yellowish; veins brown, cord and 

 vein Cu, Cii^ and Ai seamed with brown; Sa on a line with the base of cell 

 R2; Rs long, slightly curved at its base, /v2+3 very short, scarcely longer than 

 Sci, cross- vein r at the tip of Ri; the bases of cells Ri+z and i?4+5 approximately 

 in a line, cell M\ about as long as its petiole; basal deflection of Cu, near the 

 middle of cell 1st Mi; stigma elongate, quadrate, dark brown. 



Abdomen dark brown; tergites two to four, somewhat reddish in the middle 

 portion and thinly clothed with whitish hair. Hypopygium concolorous; the 

 ninth tergite strongely narrowed posteriorly with a small, rounded median 

 emargination. Pleurites large, hairy; the upper appendages dark testaceous, 

 broadening for three-sfifths their length, thence narrowed and ending in a denti- 

 form point, the inner margin of the outer two- fifths strongly denticulate; the 

 lower appendage broad in basal portion, and ending in a sharp point. 



Holotype. — cf, i\.mherst Island, Magdalen Islands, Quebec, July loth, 

 1917. (A. G. Huntsman). 



Distinguished from L. barberi, which appears to be its nearest ally, by its 



. larger size, brownish wings, dark brown stigma and veins Cii and C7/2 strongly 



seamed with fuscous. The front femora are reddish-yellow, with only the apex 



infuscated. 



Limnophila adjuncta, n. sp. 



Adusta group. Dark brown, thorax shining; costal cells fuscous; stigma 

 dark brown; apical part of wing infuscate; veins Cu and Cm seamed with fuscous. 



Length female 9.5 mm.; wing 10 mm. 



Head dark fuscous, silvery gray alxnc; proboscis short, grayish above. 

 Palpi brown. Antennae short, first joint short, fuscous, joints two to five 

 brownish- yellow, ovoidal, outer joints attenuated, brownish ; pilosity of moderate 

 length. A patch of black hair each side of occiput. 



Thorax brown, shining; sides and perisutural foveae grayish-yellow, pol 

 linose. Scutum more distinctly pollinose. Scutellum reddish brown, shining. 



