362 



THE FLORA AND FAUNA OF NUYTS ARCHIPELAGO AND THE 

 INVESTIGATOR GROUP. 



No. 13— ORTHOPTERA. 



By Norman B. Tindale. 

 (Contribution from the South Australian Museum.) 



[Read October 11, 1923.] 



Plate XXXII. 



The small collection which is the subject of this paper was made by Prof. 

 F. Wood Jones. The islands from which specimens were received are Pearson, 

 Greenly, South Neptune, Price, and Franklin. A grasshopper and an earwig 

 are described and figured as new, and the male, previously unknown, of the 

 cockroach Platysosteria brunnea, Tepper, is figured. Several of the species are 

 also recorded from the Sir Joseph Banks Group, from specimens taken by the 

 author during March, 1923. 



ORTHOPTERA. 



Family BLATTIDAE. 



Loboptcra halmaturina, Tepper. Four specimens were taken on Pearson 

 Island, and others on Reevesby Island and at Mount Lofty, and they agree well 

 with Tepper's types from Kangaroo Island. 



Calolampra irrorata, Fabricius. Two immature specimens from Pearson 

 and St. Francis Islands. Also taken on Spilsby Island. 



Calolainpra notabilis, Tepper. An immature male from South Neptune 

 Island and a male from St. Francis Island. 



Platyzosteria brunnea, Tepper. (PI. xxxii., figs. 1, 2.) Seven males and 

 three females were taken on Pearson Island. The species was described from, 

 Gilbert River and Kangaroo Island, and the specimen described by Tepper as a 

 male is a female. A male of the species P. communis, Tepper, was also described 

 as belonging to the present species. A figure of the male is given, and one of the 

 type female, to show the apex of abdomen. The male closely resembles the 

 female, but is generally smaller, the supra-anal lamina is less strongly developed, 

 and less serrated. The supra-anal lamina is generally notched at apex, but in 

 one specimen taken the notch is absent. The colour in all specimens is a dark 

 brownish-black, and the lateral margins of pronotum, mesonotum, and meta- 

 notum have a submarginal pale-yellowish vitta. The antennae are brown with 

 the base darker. 



Oniscosoma granicollis, Saussure. A female from Pearson Island and two 

 larvae from Reevesby Island. 



Family PHANEROPTERIDAE. 

 Taeniomena soror, Brunner. Price Island, one male. 



Family ACRIDIIDAE. 



Urnisa rugosa, Saussure. A female of this species was collected on Franklin- 

 Island. The species is very close to U . erythrocnemis, but can be at once dis- 

 tinguished by the dull-purplish apical half of the posterior tibiae, the lighter 



