PSOKOPHORA PAZOSI 565 



covered with broad, curved yellowish-silvery scales mixed with grayish ones, 

 more especially ia a pair of indistinct submedian longitudinal stripes and a 

 short pair basally at sides of ante-scutellar space; bristles numerous, short, 

 black. Scutellum trilobate, blackish, with broad dull-silvery scales and a group 

 of black bristles on each lobe. Postnotum elliptical, prominent, shining, black- 

 ish, nude. Pleurae black, densely clothed in the middle with flat white scales ; 

 coxae blackish, with patches of white scales. 



Abdomen subcylindrical, flattened, posterior segments abruptly tapering; 

 dorsal vestiture of metallic dark violaceous scales, lateral quadrate patches of 

 flat white scales on posterior angles ol segments which extend well onto the 

 dorsum ; venter with apical segmental white bands, basal portions blue black, the 

 seventh segment entirely black ; first segment clothed dorsally with flat white 

 scales and with many pale bristles. 



Wings moderate, hyaline with an iridescent reflection; petiole of second 

 marginal cell shorter than its cell, that of second posterior about equal to its 

 cell; basal cross-vein about its own length distant from anterior cross-vein; 

 veins dark brown, scales dull brovm, the outstanding ones rather broadly 

 ligulate. Halteres pale, with brownish tips. 



Legs moderately long, without any outstanding scales ; hind femora largely 

 pale yellowish, a few black scales above, apical fourth blue black, extreme tips 

 white; fore and mid femora nearly wholly blue-black scaled, the knees white; 

 all the tibiae and tarsi blue black, last joint of hind tarsals white, the penulti- 

 mate joint white scaled at its base. Claw formula, 1.1-1.1-1.1. 



Length : Body about 4.5 mm. ; wing 3.5 mm. 



Life history and habits unknown. 



Mexico. 



Tehuantepec, Oaxaca, Mexico, July 5, 1905 (F. Knab) ; Salina Cruz, Oaxaca, 

 Mexico, July 10, 1905 (P. Knab) . 



Blanchard thought that Culex mexicanus Bellardi was identical with Culex 

 musicus Say, and the latter name being preoccupied, applied the name Jan- 

 thinosoma mexicanum to the species we call sayi (Les Moust., 334, 1905). 



PSOROPHORA PAZOSI (Pazos). 



Aedes paeosi Pazos, Anal. Acad. Cien. Med., fis. y nat. de la Habana, xlv, 432, 1908. 

 Aedes pazosi Dyar & Knab, Smiths. Misc. Colls., quart. Iss., Ill, 253, 1909. 

 Aedes pazosi Pazos, San. y Ben., 11, 46, 192, 1909. 



Okiqinai, Descbiption op Aedes pazosi : 



Female. — Occiput with golden scales. Mesonotum with broad, flat, golden scales. 

 Abdomen dark violet blue above, with lateral triangular apical segmental spots of 

 golden scales, venter golden-scaled. Legs dark violet blue, the scales on the hind 

 tibiae and tarsi not erect or roughened, last two hind tarsal joints white, the fourth 

 joint marked with black beneath nearly throughout. Wing-scales brown. 



One specimen, Vuelta-Abajo, Cuba (J. H. Pazos). 



Type no. 12117, U. S. N. M. 



Named in honor of the collector. Dr. J. H. Pazos. 



Descbiptioii of Female and Male op Psoeophoba pazosi (Laeva Unknown) : 



Female. — Proboscis rather long, uniform, labellae conically tapered; vesti- 

 ture black; setae minute, curved, black, those on labellae more prominently out- 

 standing. Palpi moderate, over one-fourth the length of the proboscis, clothed 

 with dark metallic-blue scales and with a few rather short black setae. Clypeus 

 rounded triangular, prominent, brovm, nude. Antennae slender, with the joints 

 subequal, rugose, pilose, black; second joint somewhat swollen towards base, 

 basal third luteous ; hairs of whorls sparse, moderate, black; tori subspherical, 

 with a cup-shaped apical excavation, brownish luteous, dark within. Eyes black. 

 Occiput dark brown in front, luteous posteriorly, clothed anteriorly with broad, 

 flat white scales, medianly and posteriorly with golden scales, a large patch of 



