50 On new Species of Diploptera. 



more remarkable than between P. ivalkeri and A. paragioides, 

 winch certainly occur together, as Port Darwin is not more 

 than 40 miles distant from Adelaide River. 



Rhynchium, Spinola. 

 Rhynchium hemorrhoidals , Fabr., race salomonis, subsp. n. 



? . Black ; antenna?, mandibles, spot behind each orbit, a 

 small mark above insertion of antennae, tibise and tarsi, 

 ferrugineous. Wings flavo-hyaline. Clypeus subtriangular, 

 narrowly truncate; pronotum rather slender anteriorly, 

 widening towards the tegulae ; scutellum and postscutellum 

 slightly arched, the latter overhanging the median segment, 

 which is truncate, rounded laterally, and depressed medially. 

 Abdomen with the first segment rather narrower than the 

 second, about as broad as median segment. Head and 

 thorax uniformly coarsely punctured, abdomen more finely, 

 median segment with a series of small tubercles on each 

 side, mesouotum with a short longitudinal carina running 

 to the posterior margin. 



Length 20 mm. 



Hob. Solomon Islands (C. M. Woodford); 1 ? . 



This race most closely resembles specimens of R. hemor- 

 rhoid ale from Celebes and Ceram, but differs from them con- 

 siderably in the amount of puncturation on the mesouotum 

 and scutellum, and in the absence of any fuscous on the 

 wings. The insect has a slender appearance when compared 

 with typical R. hemorrhoid ale. 



Rhynchium abispoides, sp. n. 



$ . Reddish ferrugineous ; two minute spots on the base 

 of each mandible, a small spot behind the insertion of each 

 antenna, mesouotum, tegulae on the inside, median segment 

 on hind surface, first abdominal segment at base, second 

 abdominal segment, black. Wings flavo-hyaline, more 

 golden towards costa, apical area fuscous. Tibiae and tarsi 

 covered with a short dense golden pile. Clypeus ovate, 

 produced towards the apex and narrowly emarginate ; pro- 

 notum square anteriorly, rather narrower than thorax at the 

 tegulae; scutellum and postscutellum separated by a con- 

 spicuous transverse furrow; median segment truncate and 

 .depressed medially, sides produced to form blunt angles. 

 Clypeus longitudinally striate towards apex, a carina broadly 

 V-shaped on vertex behind ocelli ; thorax and abdomen finely 

 and evenly punctured, two shallow longitudinal sulci on 

 mesonotum, median segment transversely striate. 



