488 



NEW YORK STATE MUSEUM 



Asian Taeniorhynchus breviceUulus Theo. [pi. i6, 

 fig. i] is a remarkable specialized member of this genus judging 

 from the exceedingly grotesque harpagones, still its other features 

 agree in the main with those stated above, and we see no reason 

 whv it should be given a different position than that assigned by 

 its describer. 



The genus Taeniorhynchus is evidently closely related to Theo- 

 baldia and Culiseta, and it may be regarded as a more specialized 

 form of this group. The slender spines of the claspette in Theo- 

 baldia, have become thickened and fused in Taeniorhynchus, and 

 the denticulations of the harpes in the first named genus are much 

 more pronounced and segregated in this. The presence of sub- 

 median groups of stout, chitinous spines on the eighth segment, 

 also indicates a close affinity with the above named genus. This 

 is borne out by an examination of wing characters. The large, 

 somewhat broad scales of Theobaldia and Culiseta are represented 

 in Taeniorhynchus by much dilated ones and there is also a marked 

 similarity in venation. 



Taeniorhynchus perturbans Walk. Genitalia, male. Basal 

 clasp segment stout, tapering gradually to a broadly rounded apex. 

 Terminal segment greatly swollen at the middle and also at the 

 apical third, at which latter it tapers gradually to a small, stout, 



terminal spine. Clasp- 

 ette a conspicuous lobe 

 bearing a very thick, 

 straight spine and an- 

 other smaller, tapering 

 one. Harpagones stout, 

 slightly excurved and 

 strongly recurved, ventral 

 margin fringed with a 

 series of thin teeth, 

 which are most highly 

 developed at the distal 

 extremity. Unci curved, 

 nearly approximate, 

 tapering gradually to a 

 rather obtuse , serrate 

 extremity. Dorsal mar- 

 gin remarkable because 

 of the series of fine teeth 

 along the anterior two 

 thirds. Setaceous lobes 

 moderate, bearing three 

 to five stout spines. 

 Seventh segment with a 

 pair of submedian groups of three to six stout spines. [PI. 1 5, fig. 2] 



Fig. 18 



Taeniorhynchus perturbans, ven- 

 tral aspect of male genitalia, greatly en- 

 larged (Original) 



