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NEW YORK STATE MUSEUM 



in the Anophelinae they appear to be absent or else their function is 

 usurped by the largely developed tergum which extends back and 

 protects the smaller organs. These structures are weakly chiti- 

 nized in some species and in others are much stouter and in certain 

 forms are provided with peculiar series of chitinous teeth. This 

 appears quite characteristic of the genus Taeniorhynchus, being 

 particularly well developed in T. brevicellulus Theo. and 



T. a u r i t e s Theo. 



The setaceous lobes are pecuUar structures apparently belonging 

 with the preceding organs of the ninth segment, but in reality a part 

 of the rudimentary eighth segment. They are in most Culicinae 

 simple, chitinous lobes bearing a series of stout, chitinous spines. 

 In soi^e instances these latter are very stout. A few Culicinae 

 possess submedian groups of similar chitinous spines on the seventh 

 abdominal segment, as in Culiseta absobrinus Felt. 

 C. consobrinus Walk, and Taeniorhynchus per- 

 turb a n s Walk. 



Fig. 9 



Culicada abserratus, hermaphrodite antenna showing 

 segmentation characteristic of the female, with the greatly elon- 

 gated plumes of the male and illustrating a peculiar compound 

 hair occurring on the third segment. Smaller 9nes are also found 

 on more distal segments much enlarged (OngmaU 



