468 



NEW YORK STATE MUSEUM 



The most striking modification is seen in the abdominal append- 

 ages, the clasp, terminal clasp segment and harpes of the right 

 side being well developed and distinctly male. The right harpa- 

 go appears to be present, though it has become fused with 

 another organ, possibly a rudimentary female lobe. The setaceous 



lobes, also characteristic of the 

 male, are both well developed. 

 Most of the organs on the left 

 side are rudimentary and may be 

 possibly regarded as very much 

 reduced male appendages or 

 probably distorted female lobes. 

 It will be seen by reference 

 to the above that this specimen 

 is largely male on its right half, 

 with a sinister preponderance of 

 female characters. 



Culicada pullatus Coq. The 

 right antenna of this specimen 

 is characteristically male, while 

 the left is plainly female with 

 male tendencies shown in the 

 enormous prolongation of the 

 basal whorls of each segment and 

 the somewhat slightly produced 

 13th and 14th segments. Both 

 palpi are plainly male. The right 

 wing has the sparse scale clothing 

 of the male, with the posterior 

 cross vein remote from the mid 

 cross vein, the absence of oblique 

 fringe scales and a greatly pro- 

 duced anal angle ; the left wing is 

 Culicada abserratus, genitalia narrower than the othcr, with an 

 of an hem.aphrodite. ^^^^ greatcrdistancc between the 



posterior and mid cross veins and the submarginal cells, with possibly 

 slightly longer petioles than in the other wing. The left wing pre- 

 sents a marked female characteristic in the presence of oblique fringe 

 scales near the posterior margin, and it is possible that these 

 structures were along the greater length of the wing and have been 

 lost by abrasion. The fore and mid legs of the right side present 

 a striking male modification in the very obvious inequality between 

 the claws, a character present in almost equal degree in the fore 

 leg of the left side and nearly absent in the claw of the right mid 

 leg. The wings and legs of the two sides it will be seen, plainly 

 indicate an intermingling of the characters of the two sexes. The 

 posterior abdominal appendages are remarkable in that they are 

 obviously female and apparently entirely normal for this species. 



It will be seen by reference to the above that there is a partial 

 lateral division and a plain anteroposterior sexual modification in 

 that the head is largely male, while the posterior extremity is 

 apparently entirely female. 



Fig 



