REPORT OF THE STATE ENTOMOLOGIST I904 47 1 



incus process with rounded extremity, evidently composed of sev- 

 eral chitinous spines fused together. Internally there are several 

 stout, chitinous spines. Unci long, very slender, fused and extend- 

 ing beyond the harpes and harp agones. Lobe of eighth segment 

 broad, short, smooth, with apex obliquely rounded. 



Pyretophorus costalis Loew, Genitalia, male. Basal clasp seg- 

 ment stout, tapering gradually to a broadly rounded apex. Termi- 

 nal clasp segment very long, slender, arcuate, basal portion enlarged 

 and with a small, stout apical tooth. Claspette much reduced, 

 apparently represented only by a rather irregular ventral group 

 of large, chitinous spines. Harpes approximate, linear, each with 

 three or four acute, serrate, triangular, divergent processes. Basal 

 portion of harpagones sub quadrangular, excavated internally, with 

 a rather stout, recurved tooth. On the apical external margin 

 there is a stout, slightly curved, chitinous process roimded apically 

 evidently composed of several fused, chitinous spines. Close 

 beside this there is a small, chitinous spine and a larger and a 

 smaller one internally. Tergum large, membranous and extend- 

 ing beyond the harpes and harpagones. Lobes of eighth segment 

 indeterminate. [PL 5, fig. i] 



CULICINAE 



Psorophora ciliata Abr. Genitalia, male. Basal clasp segment 

 stout, sHghtly rounded and tapered posteriorly. Terminal seg- 

 ment excurved, with subapical outer and terminal inner spine; 

 inner convex margin armed with a series of stout, spine-tipped 

 teeth. Claspette inconspicuous. Basal segment of harpes incurved, 

 nearly acute at tip and bearing many terminal and subterminal, 

 recurved hairs, and with a subapical, falcate appendage extern- 

 ally, the basal portion when in normal position, forming an almost 

 complete circle. Harpes regularly curved and crowned exteriorly 

 with a series of stout teeth. Unci nearly approximate, parallel, 

 convolute, one corner being folded back and forming a broad, 

 retrorse spine. Setaceous lobes of ninth segment rudimentary. 



Janthinosoma musica Say. Genitalia, male. Basal clasp seg- 

 ment stout, tapering, with a well defined apical lobe; middle of 

 teiminal segment enormously dilated, apex bearing a short, stout, 

 sprne. Claspette represented by a rudimentary lobe. Harpes 

 long, slender, slightly incurved and with a conspicuous internal 

 brush of long hairs on the apical third, and at the extreme tip a 

 pair of somewhat spatulate, sucker-disklike appendages, which 

 appear to be composed in part of a deUcate, convoluted, broad 

 strip of chitin. Harpagones broad, with a stout, terminal, recurved 

 spine _ and several smaller chitinous spurs. Unci approximate, 

 tapering, with the acute tips appressed. Setaceous lobes of ninth 

 segment rudimentary. 



Janthinosoma lutzii Theo. Genitalia, male. Clasp and claspette 

 very sirnilar to those of the preceding species. The harpes differ 

 mainly in the shorter, internal brush of long hairs and also by a 

 more marked discrepancy in the pair of apical organs, each of 

 which distinctly shows a loose spiral of tapering, chitinous tissue. 



