1024 MOSQUITOES OF NOETH AMERICA 



an der Rippe gleichformig, iibrigens fleckenweise braunschuppig, an den Adern hin 

 and vieder weiss; in der Ruhe, wo die Flugel auf einander liegen, sieht man jenseits 

 der Mltte elne blasse Binde, die an den einzelnen Fliigeln wenig Oder gar nicht 

 bemerkbar ist. Schwinger gelblich mit braunem Knopfe. Seine gelbbraunlicli mit 

 braunlichscliwarzen Fusswurzeln. — In von Winthems und melner Sammlung. 



Descbiption op Female, Male, Larva, and Egg of Anopheles ceuclans: 



Female. — Proboscis moderate, rather slender and roughly scaled; labellse 

 long, lanceolate, with fine outstanding setse; vestiture black. Palpi as long as 

 the proboscis, clothed with black scales, roughened and erect toward base, last 

 joint and extreme apex of penultimate joint pure white scaled, a narrow white 

 ring at base of penultimate joint and another beyond middle of long joint. 

 Antennae moderate, the joints subequal, rather short, blackish, densely pilose; 

 hairs of whorls short, sparse, black ; tori small, subspherical, with a cup-shaped 

 apical excavation, brown, with a few pale scales on one side. Clypeus rounded 

 triangular, brownish, pruinose, nude. Eyes well separated on the vertex, black. 

 Occiput with a median groove, blackish, the scales dense, elongate triangular, 

 erect, black, except on the vertex where they are white, a tuft of long white hairs 

 projecting between the eyes ; a row of black setae along margins of eyes. 



Prothoracic lobes small, lateral, bearing black hairs. Mesonotum narrow, 

 elongate, gray pruinose, with two narrow, bare impressed lines on anterior half of 

 disk, a pair of much broader bare stripes well outward on posterior half, these 

 stripes and sides of disk brownish, some brown mottlings on lateral portions ; 

 vestiture of numerous short yellowish hairs intergrading with narrow white 

 scales at anterior end, some black setse laterally. Scutellum collar-like, gray 

 pruinose, clothed with pale hairs and brown marginal bristles.. Postnotum 

 elliptical, prominent, dark brown, nude. Pleurae and coxae brown, gray pruinose, 

 spotted with black, with a few short hairs. 



Abdomen subcylindrical, depressed, tip subtruncate ; black, slightly pruinose ; 

 vestiture of abundant, rather coarse, yellowish hairs on the disk, longer brown 

 ones on the sides. 



Wings (plate 41, fig. 1) moderate, hyaline; petiole of second marginal cell 

 shorter than its cell, that of second posterior cell hardly longer than its cell; 

 basal cross-vein close to anterior cross-vein ; scales of veins rather narrowly 

 lanceolate, dense, outstanding, brownish black and dull white, the black pre- 

 dominating ; a white spot before middle of first vein, a pale yellow spot at tip 

 of wing involving tips of first vein and of upper branch of second, a white spot 

 on second vein just before the fork, fourth vein white sealed at base of fork and 

 on middle of both its branches, fifth vein broadly whitish scaled at middle of 

 upper branch and base of lower, sixth vein whitish scaled and with three distinct 

 black patches. Halteres pale, with black knobs. 



Legs long and slender, brownish black, the tips of femora and tibiae very nar- 

 rowly pale. Claw formula, 0.0-0.0-0.0. 



Length : Body about 5 mm. ; wing 5 mm. 



Male. — Palpi as long as the proboscis, tip of long joint and last two joints 

 swollen, club-shaped, dark haired above, beneath with long, dense, yellowish 

 silky hairs ; scale vestiture brown, extreme apex and base of second joint white 

 scaled. Antennae plumose ; last two joints long and slender, rugose, pilose, black, 

 the others short, pale, with black basal rings ; hairs of whorls long, dense, brown 

 with silky luster. Coloration as in the female. Abdomen long, depressed, above 

 brownish gray, a series of median, basal, shining black spots on all the segments ; 

 lateral ciliation long but rather sparse, brown. Wings narrower than in the 

 female, the stems of the fork-cells longer, the vestiture more sparse. Claw 

 formula, 2-0.0-0.0. 



Length : Body about 5 mm. ; wing 4.5 mm. 



Genitalia (plate 40, fig. 269) : Side-pieces about twice as long as wide, 

 conical, a stout spine arising from middle of inner margin, at base two stout 

 spines arising from a tapered common base, basally on inner margin two stout 

 spines inserted upon unequal conical prominences. Clasp-filament long and 



