504 MOSQIHTOES OF NORTH AMERICA 



We have no males of ochropus Dyar & Knab, nigricans Coquillett, coticula 

 Dyar & Knab, and fasciolaius Arribalzaga, and are obliged to omit the names 

 from the table. 



1, Anal segment moderate perturhans Walker (p. 507) 



Anal segment much elongated titillans Walker (p. 518) 



The following species are omitted, as the mature larvae are unknown : ochro- 

 pus Dyar & Knab; nigricans Coquillett; coticula Dyar & Knab; fasciolatus 

 Arribalzaga; flaveolus Coquillett. 



MANSONIA OCHROPUS (Dyar & Knab) Dyar & Knab. 



Culex ocTiropus Dyar & Knab. Journ. N. Y. Ent. Soc, xv, 100, 1907. 

 Mansonia ochropus Dyar & Knab, Ent. News, xxi, 264, 1910. 

 Culex ochropus Theobald, Mon. Culic, v, 614, 1910. 



OBIGINAL DESCKIPTION of CtJLEX OCHBOPUS: 



Dark brown, the head and thorax rather sparsely clothed with light yellow scales 

 and brownish bristles, not forming any distinct ornamentation, but contrasting with 

 the brown membrane below; abdomen clothed with pale testaceous scales, unhanded. 

 Legs pale testaceous, the ends of the joints, as well as the ends of the proboscis and 

 palpi brownish. Wing scales pale brown, dense. Claws simple. 



One $, Centre Harbour, New Hampshire, July 19 (H, G. Dyar). 



Type. Cat No. 10261, U. S. Nat. Mus. 



Description of Female of Mansonia ochbopus (Male and Larva Unknown) : 



Female. Proboscis moderate, subcylindrical, uniform, labellas conically 

 tapered; vestiture of rather rough shining brownish ochraceous scales; setse 

 minute, curved, dark, those on labellas more prominently outstanding. Palpi 

 about one-fourth the length of proboscis, roughly clothed with brownish ochra- 

 ceous scales and numerous stiff black bristles. Antennae moderate, with basal 

 joints of shaft considerably shorter than apical ones, rugose, pilose, blackish 

 brown, the second joint slightly longer than the succeeding one, fusiform ; tori 

 subspherical, with a cup shaped apical excavation, testaceous shading to brown 

 on inner side, with a large patch of pale ochraceous scales; hairs of whorls 

 sparse, moderate, black. Clypeus, short, broadly rounded, brown, slightly 

 pruinose, nude. Eyes black. Occiput brown, clothed with narrow, curved, pale 

 yellowish, shining scales, and many erect, forked pale brown ones; broader, 

 more whitish scales along ocular margins and on the cheeks ; setae along ocular 

 margin black below, pale at vertex. 



Pro thoracic lobes elliptical, remote, dorsally, rather densely clothed with nar- 

 row, curved pale scales and pale brown bristles. Mesonotum brown, with two 

 rather broad, indistinct bare lines; vestiture of large, narrow, curved, shining 

 yellowish-white scales and with numerous golden-brown bristles. Scutellum 

 trilobate, pale brown, clothed with pale scales, each lobe with a group of brown 

 bristles. Postnotum elliptical, prominent, brown, nude, smooth. Pleurae and 

 coxae pale brown, with patches of elliptical whitish scales and rows of brown 

 bristles. 



Abdomen subcylindrical, truncated posteriorly; dorsal vestiture light brown 

 with a whitish luster, a row of triangular, basal, segmental, lateral, pale yellow- 

 ish spots, larger posteriorly; first segment with a patch of soiled yellowish 

 scales and many yellow setae ; venter whitish scaled ; setae at apices of segments 

 rather numerous, pale brown. 



Wings ample, hyaline ; petiole of second marginal cell over half as long as its 

 cell, that of second posterior cell shorter than its cell; basal cross-vein about 

 twice its own length from anterior cross-vein; veins pale ochraceous; scales 

 abundant, long, dense, nearly obscuring the membrane apically, pale brown with 



