AEDES TRISERIATUS 763 



Culex triseriatus Howard, Osier's Modern Medicine, i, 377, 1907. 



Protomacleaya triseriata Theobald, Mon. Culic, iv, 254, 1907. 



Culex (Ochlerotatus) triseriatus Viereck, 1st Ann. Rept. Conim. Health Pa., 470, 1908. 



Acdes triseriatus Thlbault, Proc. Ent. Soc. Wash., xii, 19, 1910. 



Finlaya (?) nigra Theobald, Mon. Culic, v, 467, 1910. 



Protomacleaya triseriata Theobald, Mon. Culic, v, 250, 1910. 



Aedes triseriatus Morse, Ann. Rept. N. J. State Mus., 1909, 719, 1910. 



Original Description of Cut.ex triseriatus : 



Anterior margin of the wings fuscous; tergum with white spots on each side. 



Inhabits Pennsylvania. 



Body brown; stethidium livid-brown; thorax with white hair each side; pleura 

 with two spots of white hair; feet pale, covered with dusky hair; thighs naked, 

 blackish above near the tip; tergum with a triangular white spot at the base of each 

 segment on each side; each of these spots extends upon the venter in the form of a 

 band, interrupted each side of the middle; thus forming three spots on each series 

 upon that part, the middle ones of which are almost connected into a longitudinal 

 line. 



Length one-fifth of an inch. $ 



The white spots contrast strongly with the brown colour of the abdomen. 



Original Description of Finlaya ? nigra: 



$. Head black, densely covered with ochraceous, almost white, scales, broad 

 spindle-shaped and forked scales on the occiput, extending up to the vertex, spindle- 

 shaped scales around the eyes, flat scales on the sides, a few light bristles extending 

 forward between the eyes, and dark ones around the eyes; antennae very dark brown, 

 almost black, apparently fourteen-jointed, verticels brown, pubescence white, a few 

 scales on the first joint, basal joint testaceous, with fine light erect hairs, and a few 

 small flat scales; proboscis very dark brown, with violaceous reflections; palpi very 

 dark brown, not unusually heavily scaled, a few hairs at the tip; clypeus dark brown, 

 eyes dark brown. 



Thorax black; prothoracic lobes clothed with flat white scales; mesothorax with 

 dark brown curved scales, except the sides and " shoulders," the former heavily 

 covered with broad spindle-shaped white scales, the latter with white broad-ended 

 flat scales, a line of broad curved white scales around the " bare space," some light 

 bristles projecting forward at the nape, a short line of them near the " bare space," 

 and a heavy bunch over the wing joint; scutellum partly denuded, but the basal row 

 of scales is curved, the remainder flat. The scales on the mid lobe white, those on 

 the lateral lobes a very dark brown, long light bristles, probably six, on the mid 

 lobe; pleura very dark, with a few large patches of white flat scales; metanotum 

 dark brown. 



Abdomen dark, heavily scaled with dark brown flat scales (with violaceous re- 

 flections), and small white, basal, lateral spots, apical hairs light; venter mostly 

 white-scaled, but dark apical bands on some of the distal segments. There is some 

 suggestion of tufts on the ventral side, but not well marked, and may be due to the 

 position in which the specimen dried. 



Legs: coxae and trochanters light and sparsely light scaled; ventrally the femora 

 are all light scaled, and in the hind legs are dorsally light scaled about one-half 

 (basal) their length, and are rather heavily bristled. The remainder of the legs is 

 brown, with the exception of a rather brilliant knee spot on the hind legs, a smaller 

 one on the mid legs, and in some lights a light line the length of the fore tibiae on 

 the caudal side; ungues rather large and heavy, equal and uniserrate. 



"Wings clear, brown veined, rather heavily scaled with dark, broad, truncated 

 brown scales, suggesting typical Taeniorhynclius scales, and having violaceous re- 

 flections. Fork cells very long; 1st submarginal about a fifth longer and somewhat 

 narrower than the 2nd posterior cell, stem not half the length of the cell, and the 

 same length as that of the 2nd posterior; the supernumerary cross vein a little 

 interior of the mid, and about the same length, the posterior nearly twice as long as 

 the mid cross-vein, and more than double its own length interior; halteres light. 

 The third vein extension is more marked than often found, but not so decided as in 

 Desvoidea fusca, Theob. 



Length 5.5 mm. Taken Aug. 3, 1905. Habitat, Rock Island Arsenal, 111. 



Described from one specimen sent by Dr. G. G. Craig, Cont. Surg., U. S. A., in some 

 very interesting collections from Rock Island Arsenal. While the characteristics do 

 not agree fully with Theobald's definition of Finlaya, they correspond more closely to 

 those of this than to those of any other existing genus, and I have therefore referred 

 it, provisionally at least, to Finlaya. The species is extremely interesting, because 

 it is, so far as I can ascertain, the first having this peculiar grouping of scales to be 

 reported from the United States. 



