572 



strong, spine. The aedeagus is complex and cons-'sts of tvro parts 

 forming more or less complete tubes. The inner tube is composed of a 

 pair of flat, narrow processes, rounded at their apices and joined 

 together at their bases where, in conjunction with a membrane, they form 

 a tube into which the ejaculatory duct opens; a chitinous process proceeds 

 from the base of this organ to the- bases of the genital styles and 

 co-ordinates their movements. The outer tube is composed of three pairs 

 of processes joined together at their bases; the dorsal pair are pointed 

 and bear small teeth along their dorsal surface. The lateral pair are 

 larger, produced into a triangular spine at their bases, the distal portion 

 being narrow, slightly sinuate and the apices rounded; the ventral pair 

 are bifurcate, one portion projecting distad as a strong spine and the 

 other curving under and inward as a strong spine. A strong, chitinous 

 framework connects this outer tube to the base of the anal segment. 



Female. Length 4 mm.; tegmen 5 mm. The eighth sternite is 

 divided in the middle, the inner rounded edges meeting together, the 

 seventh sternite is widely and roundly emarginate on the posterior 

 margin. In coloration similar to the male. 



Described from eight males and six females from Tutuila, 

 Samoa, from 760 to 1200 feet elevation (Kellers, April, June, 

 Aug-ust, 1918). Type No. 1010. There are two other female 

 specimens, larger and darker, which may represent another 

 species. 



Eurynomeus niger sp. n. 



This is congeneric with the above and has the same venation. 

 Length 4.2 mm., tegmen 5 mm. Black; two small white marks at base 

 of clypeus continued onto genae and on lateral margin of pronotum, 

 legs dark brown, hind legs lighter. Tegmina black, a whitish mark 

 across the middle of clavus to costa near base, broadest in clavus, 

 thinning out to a point on costa, this area being thickly granulate, 

 a few light granulations scattered about ; wings dark fuscous with 

 darker veins. 



Described from one female from Tutuila, Samoa, about 

 1000 feet elevation (Kellers, June. 1918). Type Xo. 1011. 



Delphacidae. 



Ugyops kellersi sp. n. Figs. 12, a. 



Male. Macropterous; length 6 mm., tegmen 5.4 mm. Vertex longer 

 than wide (1.4 to 1), apex slightly wider than base, base slightly in 

 front of middle of eyes; length of face 2.3 times the width, widest 

 slightly before apex, two median carinae obscure at base but distinct 

 at apex; antennae longer than head and thorax together, second joint 

 1.8 times the length of first. 



