Discocepliallnaj and Pentatoiniuge. 4:35 



GalgACUS, gen. nov. 



General characters of Dictyotus, but differing from tiiat 

 genus by the much more elongate body ; scutellum only 

 about half the length of the abdomen, abruptly narrowed and 

 angulated at apex ; coriura much shorter than in Dictyotas^ 

 with the apical margin almost straight ; membrane large, 

 the venation reticulate; connexivum broad and moderately 

 directed upwards. 



Galgacus macer. 

 Dictyotus macer, Walk. Cat. Het. i. p. 182. n. 14 (1867). 

 Hah. South Australia. One specimen (Brit. Mus.). 



Arniscus, gen. nov. 



Head about as long as the pronotum, the lateral lobes sub- 

 laminate, a little longer than the central lobe, moderately 

 sinuate on lateral margins, convexly rounded at apices ; an- 

 tennse with the second joint a little longer than the third, 

 second joint considerably passing the apex of head. Pro- 

 notum with the lateral angles broadly and convexly prominent, 

 their apices obtuse, and slightly raised upwardly and for- 

 wardly. Scutellum more than half the length of the abdomen. 

 Rostrum reaching the posterior coxjb ; second and third joints 

 subequal in length. 



Arniscus humeralis. 

 Sciocoris humeralis, Dall. List Ilem. i. p. 135. n. 13 (1851), 

 Hah. Australia. (Type, Brit. Mus.) 



Genus NiPHE. 



NipTie cephalus. 



Pentatoma cephalus, Dall. List. Hem. i. p. 245. n. 32 (1851). 

 Pentato7na lateralis, Walk. Cat. Ilet. ii. p. 301 (1807). 



Genus Tropicorypiia. 



Tropicorypha ventralis. 

 Petitatoma ventralis, Dall. List Ilem. i. p. 243. u. 25 (1851). 



Tropicorypha rufescens. 

 Agonoscelia? rufescens, Walk. Cat. Ilet. iii. p. 646 (1868). 



