Descriptions of New or Little-known Orthopt&ra. 429 



that the four species described by Walker do uot admit of much 

 distinction. H. marginatus is a $ in which the pronotum is greatly 

 elevated and slightly indented on the right border. Walker's descrip- 

 tion mentions, however, the presence of five rows of tubercles on the 

 dorsuin, a character shared only by jff. pupus and another species, H. 

 striaticoIUs. According to notes which I took, long ago, at the British 

 Museum, H. marginatus = pupus. The number of South African 

 representatives of the genus is thus reduced to two, but I am adding 

 two more. The habitat of the species is much more restricted in 

 South Africa than those of the other genera. Thus H. pupus is 

 restricted to the neighbourhood of Cape Town ; H. hnysna to the 

 districts of George Kuysna, Humansdorp; H. namaqua ranges from 

 what is known here as the Karroo, to Namaqualand ; H. abbreviatus 

 seems to reach further east, as far as Seymour ; but all the species are 

 restricted to the Cape Province of the Union. 



Key to the Species. 



Dorsal part of abdomen with five rows of spines. Pronotum 



roughly coriaceoiis ...... pupus. 



Prouotum with ray-like series of raised lines breaking- sometimes 



into elongated tubercles ...... knysna. 



Dorsal part of abdomen with two rows of spines. Hind dorsal 

 part of pronotum somewhat sloping laterally, in $ , inter- 

 mediate femora with two spines underneath . . . namaqua. 



Hind dorsal part of pronotum not sloping laterally in the J ; inter- 

 mediate femora without spines underneath . . . abbreviatus. 



HETKODES KNYSNA, n. sp. 



Pale testaceous ; occasionally variegated with fuscous on the pro- 

 notum. Smaller than H. pupus ; the disposition and number of spines 

 on the prothorax are the same, namely, four on the fore border, four on 

 the sides of the anterior part with four discoidal, six on each side 

 of the hinder part, and two median ones in the hind border ; the 

 anterior dorsal part of the disk is scrobiculate instead of coriaceous 

 as in H. pupus, and the posterior, instead of being also coriaceous, is 

 covered with longitudinal, convex cariuae breaking into elongated 

 tubercles on the sides, the edge of the hind border is slightly indented 

 in the between the two apical spines ; the abdominal segments are 

 covered with small, but very plain, round tubercles, and there are five 

 longitudinal rows of spines ; the median consists of seven spines, one 

 on each segment, the outer row numbers only five spines, and between 

 the median and the second, and occasionally between the second and 

 the third, there are traces of another row ; anterior femora with one 



