July,] 156 



This genus is erected for some of those species which have been 

 included in the genus Pseudectobia, Sauss. The type of Pseudectobia 

 is luneli, Sauss., a small species with the femora very sparsely armed 

 as in the Ectobiinse, and with a small and ill- defined apical triangle. 

 It is a puzzling species, and the only specimen that I have seen is the 

 very shattered type preserved in the Geneva Museum, but it is plainly 

 not congeneric with liturifera, Stal, and indeed is more suitably 

 placed in the Ectobiinse. I must own to considerable alteration of 

 opinions about the species of Pseudectobia, and I should like to cancel 

 a good deal of that which I have written about the genus. In ex- 

 tenuation I can only plead that the author of the genus, de Saussure, 

 was very vague himself about its limitations, and has brigaded under 

 its heading a number of widely separated species belonging both to 

 the Ectobiinse and to the Pseudomopinse [= PliyUodromiinaf\. In a 

 more extended memoir I hope to clear up all the confusion definitely, 

 having now examined all the types I am in a better position to do so 

 than formerly. 



A few words are necessary to explain the systematic position of 

 the genera Liosityha, Stal, and Mareta, Bol., both of which have by 

 some authors been considered as synonymous with Phyllodromia, Serv. 

 Liosilpha pumicata, Stal, the type of Liosilpha, is a very broad, short, 

 and rather convex species, with the discoidal sectors of the tegmina 

 oblique, the ulnar vein of the wings ramose, no apical triangle, and the 

 front femora armed after Type A, the tegmina and wings do not exceed 

 the apex of the abdomen, and the species has very much the appear- 

 ance of an Allacta. In my opinion the genus can stand. 



Mareta, Bol., resembles Eoblatta, mihi, but the marginal field of 

 the tegmina is much broader, and the front femora are armed on the an- 

 terior margin beneath with minute piliform spines only. Onychostylus, 

 Bol., is undoubtedly synonymous, the genus was based (as indeed was 

 Mareta, too) on secondary sexual characters of the male sex, eminently 

 untrustworthy characters for generic discrimination. An examination 

 of the type, 0. unguiculatus, Bol., shows that in all other important 

 details of its anatomy it agrees with Mareta. A considerable number 

 of species described under Phyllodromia I find to be true species of 

 Mareta. 



7, Clarendon Villas, Oxford : 

 June 6th, 1911. 



