480 Mr. W. L. Distant on iromoptera. 



B. Lateral niaryii\s of piouotiim dilated, but not medially 

 ancrulate. 



d. Head (including eyes) about as wide as base of meso- 

 notum, its margins moderately convex, the front 

 sciircely projecting, and about as long as vertex at 

 area of ocelli Tettiyades. 



dd. Head (including eyes) much wider than base of 

 mei^onotum, its margins sinuately oblique, the front 

 strongly projecting, and longer than vertex at area 

 of ocelli Choitosia. 



Genus COLLINA. 

 CoUiva, Dist. Biol. Centr.-Amer., Rhynch. Hom. i. p. 142 (1905). 

 Type, C. Biolleyi, Dist. {Odopcea). 



Okapa, gen. nov. 



Head (including eyes) about two thirds the \vidth of base 

 of mesonotuni, its length about equal to space between eyes, 

 I'ront shorter than vertex ; pronotum almost as long as meso- 

 iiotum, its lateral margins anipliated and medially angulate ; 

 abdomen in male short, not longer than space between apex 

 of head and base of cruciform elevation ; tympanal orifices 

 completely exposed; opercula in male short, transverse, not 

 quite reaching base of abdomen ; rostrum passing posterior 

 coxae; posterior tibiae finely spined on apical half; tegmina 

 and wings semiopaque, the first with eight apical areas and 

 with the basal cell very slightly longer than broad ; wings 

 "with six apical areas. 



Tyj.e, 0. numa, Dist. [Pycnd). 



In describing what pioves to be the type of this genus I 

 stated that 1 based my diagnosis on a single female specimen 

 only, which I had kept in my possession for some years, 

 hoping to receive an example of the male. This I have now 

 seen, which enables me to recognize it from its tympanal 

 characters as representing a new genus of the subfamily 

 Tibicininge. 



Daza, gen. nov. 



Head (including eyes) about as wide as base of mesonotum, 

 in length as long as pronotum (cxchiding posterior margin), 

 iront broad but narrow, not prominent, inserted somewhat 

 deeply in vertex ; pronotum shorter than mesonotum, its 

 lateral margins ampliate and medially angulate; mesonotum 

 a little convex ; abdomen broad, robust, longer than space 

 between apex of head and base of cruciform elevation ; 

 tympanal orifices entirely exposed, tj^mpanal flaps altogether 



