2) The exception to the fused pro-and mesonota (in the apterous 

 R. tenuipes 9) can scarcely be deemed to prove the rule; indeed, it 

 appears almost to render further discussion unnecessary. Moreover a 

 species from Venezuela in the Turin Museum, which I have determined 

 as Rh. femorali^ Champion, and another from Venezuela and Darien, 

 refered by me to R. angustipes Uhi., noticed in the I» part of this 

 paper) have distiuctly - separuted prò - and mesonota in both sexes, 

 and at the same tirne there are 3 distinct (as seen with a compound 

 raicroscope) segments in each tarsus. In short, Trochopus may perhaps 

 be on the way to developing into a new genus or subgenus, but it cannot 

 be said, in my opinion, to have attained as yet to that point. 



10. Corixa Kollarii (Fieb.) 



Corisa kollarii Fieb. 1851 Abh. bòhm. Ges. Wiss., (v), 7, p. 229, 

 Tab. 1. fig. 7; Guérin 1859 in Sagra's Cuba, Atlas, Tab. xm, flg. 14. 



Belongs to subgenus Callìcorìxa F. B. White. 



Comparatively broad, length 2 i l ì times greater than width: pronotum 

 and clavus feebly rastrate, corium and membrane scarcely rastrate. 



Head and pronotum short, width of the latter 2 */> times greater than 

 its length; lateral angles obtuse, rounded. posterior angle obtuse, sub- 

 triangular. Metaxyphus triangular, somewhat elongate, not acuminate. 

 Anterior femur incrassate, intermediate tibia one-half longer than tarsus, 

 claw one-fifth longer than tarsus. 



Fig. 3. — Face of Corixa Kollarii Fieb. <$ 



Fig. 4. — Anterior tibia and tarsus of te same tf. 



Fig. 5. — Anter >r tibia and tarsus of te same 9. 



JVJB. — Only one row of brisiies has been represented l'or the sake of clearness. 



d Frontal fovea large, deep, ovoid, extending from the base of the 

 labrum to about two-thirds of the length of the eye (as seen from below), 

 and laterally from eye to eye; base terminating in a transverse carina, 

 very slightly produced posteriori}' in the middle, apical margin subtrun- 

 cate [flg. 3], 



