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U.S. NATIONAL MUSEUM BULLETIN 261 



present, separated at base, each articulated with posterolateral angle 

 of connective and with one or more short branches, each paraphysis 

 closely associated with base of aedeagus and connected with it by a 

 membrane. 



Figure 46. — Tunga cartwrighti, new species (plates not shown in c, paraphyses 

 shown in f and g) : j, male pygofer, right side, posterior view. 



Tunga is known from Central America and Colombia. Specimens are 

 very rare in collections. The female is known only for the type-species, 

 in which the abdominal sternum VII is well produced and with the 

 posterior margin transverse and bearing a conspicuous median tri- 

 angular tooth. The paraphyses of the male genitalia might also be con- 

 sidered as aedeagal processes, since they articulate with the connective 

 and are closely associated with the base of the aedeagus. The form of 

 the male genitalia strongly suggests a relationship of tliis genus with 



