498 MOSQUITOES OP NOKTH AMERICA 



Harpes columnar, with recurved divided tips; harpagones small, slender, rod- 

 like with rounded tips; unci forming a long cylinder, reaching outer fourth 

 of harpes, its inner revolute margin notched toward tip. Basal appendages 

 represented by a diffuse setose area. Two small, stout spines on penultimate 

 segment. 



The life history and habits are unknown to us. 



Known only from Mexico. 



Guanajuato, January 20, 1905 (A. Duges) ; Mexico City, October 26, 1900 

 (S. Arara) ; Leon (A. Dugfes) ; Salvatierra (A. Duges) ; Hidalgo, 9000 feet 

 (Mann & Skewes, through B. Preston Clark) ; Coyoacan, July, 1909 (A. L. 

 Herrera) . Also reported from Ciudad, in Durango (Osten Sacken) . 



Ouliseta dugesi represents the Califomian maccrachencB on the table-land of 

 Mexico. It is very nearly related to that species, but apparently specifically dis- 

 tinct. It was originally confounded with the European annulatus, to which we 

 have referred under the discussion of maccrachencB. Our correspondents have 

 not sent us any information concerning the early stages of the species and Mr. 

 Knab, who visited Mexico, did not find it in the tropical parts of the cotmtiy. 



CULISETA ALASKAENSIS (Ludlow). 



Culex annulatus Osten Sacken (not Schrank), Cat. N. A. Dipt, 2 ed.. Smiths. Misc. 



Colls., xvi, 18, 1878. 

 Theobaldia alaskaensis Ludlow, Can. Ent., xxxviii, 326, 1906. 

 Theoialdia alaskaensis Theobald, Mon. Culic, v, 273, 1910. 



OsioiNAL Desckiption OF Theobaijjia alaskaensis : 



Female. — Head dark brown, covered with white curved scales, and dark brown 

 forked scales on the occiput, with flat white scales on the sides, and extending down 

 under the labium; a few brown bristles around and between the eyes; antennae 

 dark brown, heavy white pubescence and sparse brown verticels, first and second 

 joints with some white flat scales, basal joint testaceous, with a few white flat scales 

 on the median side; palpi dark brown, sparsely covered with white flat scales and a 

 few hairs; proboscis yellowish from base about two-thirds its length, the apical third 

 dark brown, the whole sparsely covered with thin white flat scales ; the eilect of the 

 proboscis under the hand lens is not, however, of a band, the proximal part being 

 merely of golden-brown tinge, and the distal part darker; clypeus brown; eyes dark 

 blue-green. 



Thorax dark brown; prothoracic lobes with a few white curved scales; meso- 

 notum sparsely clothed with rather large white curved scales, and some brown 

 bristles, which do not, however form any ornamentation except for two tiny faint 

 white submedian 8X)ots nearly midway of the mesothorax, which only show in 

 rather perfect specimens; when denuded there is a suggestion of a dark median 

 line; pleura dark brown, with white flat spatulate scales; scutellum dark brown, 

 the white curved scales being grouped distinctly on the lobes, the interlobular part 

 naked; eight long brown marginal bristles on mid and six on the side lobes, a few 

 lighter bristles above; metanotum brown. 



Abdomen dark brown, with dark brown scales and white bands, mostly basal, but 

 sometimes very slightly apical, and in some specimens develop into very narrow 

 lateral spots, especially on the distal segments; occasional white scales scattered 

 through the brown; second segment with a narrow median line, apical almost wholly 

 white-scaled; apices and sides of segments rather profusely supplied with light- 

 coloured hairs; venter mostly white scaled. 



Legs: Coxae and trochanters all brown, with white scales; femora dorsally brown, 

 scaled with a sprinkling of white scales, ventrally white, a small light apical spot, 

 but no ring as in annulata; tibiae and metatarsi also brown, spirkled with white, 

 with small light apices; first and second tarsal joints in all the legs with narrow 

 basal light (ochraceous) spots not always amounting to bands; remainder of tarsi 

 brown, except on the hind legs, where sometimes the base of 3rd and 4th joints have 

 a few white scales, not noticeable with a hand-lens; ungues large, simple and equal. 



Wings brown ; costa, subcosta and first long veins heavily scaled with long trun- 

 cate scales, mostly brown, but sprinkled with a few white scales; these are also 

 found on the stem of the fifth; the second, third, fourth and sixth veins clothed with 



