190 INSECUTOR INSCITI^ MENSTRUUS 



Male hypopygium. Side pieces long and slender, the tips 

 curved down ventrally ; some scales and fine setae on the 

 terminal aspect; three long hairs close together near base. 

 Clasper with long slender stem, the tip expanded and trilobed ; 

 central lobe broadly expanded, squarely ended (PI. V, fig. 2), 

 with rather long fine setae on margin, sparsely placed, and a 

 longitudinal row of eight tubercles with recurved setae ; central 

 core detached as a separate arm, rather long, recurved, slightly 

 pilose-striate ; short side-arm bent at right angles ; long side- 

 arm as long as the middle lobe or longer, with middle and 

 terminal seta. Tenth sternites long, slender, with curved dentate 

 tip. Another pair of appendages within, curved, spinose- 

 crested, pointed, but apparently not furcate-beaked as in leuco- 

 pisthepus. Ninth tergites quadrate, stout, with two long setae 

 on each side. 



Types, male and female, No. 25759, U. S. Nat. Mus. ; 

 Margarita, Canal Zone, Panama, August 12, 1922, bred from 

 larvae found in wild pine-apple plants (J. B. Shropshire). 



Wyeomyia (Miamyia) hosautus Dyar & Knab. 



VVyeomyia hosautus Dyar & Knab, Journ. N. Y. Ent. Soc, xv,, 



311, 1907. 

 WycoDiyia synimacluis Dyar & Knab, Smith. Misc. Colls., Quart. 



Iss., Hi, 262, 1909. 

 Wyeomyia cuethes Dyar & Knab, Smith. Misc. Colls.. Quart. Iss., 



263, 1909. 



This species was held apart on a single female, as supposedly 

 having a distinct white tip on the prothoracic lobes. The white 

 tip, however, is in reality faint, and there is no difference dis- 

 cernible between this and the better known symmachus. The 

 name hosautus is the older and will take precedence. 



Culex bidens, new species. 



ITead brown on the vertex, with white scales on the sides, 

 scaled as in Culex proper. Mesonotum bronzy brown scaled. 

 Abdomen black dorsally in the female, with basal white bands 

 in the male, widened centrally; small basal segmental lateral 

 white spots ; venter whitish scaled. Legs black ; femora pale 



