ON THE CliASSIFIOATION OF THE G. LOMAPTERA. 147 



on the abdomen ^) (a peculiarity observed before by Mr. Sharp 2); 

 besides this the following are the principal characteristics given in 

 the diagnosis of that genus, viz: a small scutellum not covered 

 by the median lobe of the thorax, a straight horizontal mesoster- 

 nal process, the shape of the pygidium and the general form. 



In the enumeration of the species which have to constitute this 

 genus, L. B'Urvillei Burm. is placed provisionally ^), being 

 unknown at that moment to the author, but some time after- 

 wards *) , having received that species , Mr. Gestro says that although 

 L. TT Vrvillei is wanting the stridulating organs, it must enter 

 undoubtedly in his genus Ischiopsopha ^). — The smaller Lomaptera 

 ceramensis Wall, and cambodiemis Wall. , which have all the 

 characteristics of IscJiiopsopha , with the exception of the stridulating- 

 organs, are excluded from the genus and Mr. Gestro calls them 

 true Lomapterd s ^). 



It is also Mr. Gestro who observes that the group of L. striata 

 Wall. , imlla Billb. etc. , with an elongate visible scutellum , a peculiar 

 shaped pygidium , mesosternal-process and general form , will have to 

 constitute a new genus ') , however it was not named before some 

 years afterwards by Dr. Kraatz, viz: Thaumastopeus ^). — To the 

 characteristics enumerated by Mr. Gestro, Dr. Kraatz adds as a prin- 

 cipal character the shape of the forceps, which is quite different 

 from that of Ischiopsopha and Lomaptera. 



1) Annali del Mus. civic, di star, nat, di Genova, vol. VI, 1874, p, 496 — 498. 



2) The Entom. monthly Magaz. XI , 1874 , p. 136. 



3) 1. c. p. 498. 



4) Ann. del Mus, civic, di star. nat. di Genova, vol. IX, 1876 — 77, p. 89 — 90. 



5) Mr. van Lansberge quotes erroneously (Compi. Rendus de la Soc. ent. de 

 Belgique .1 1880, p. cxxv) that Mr. Gestro places doubtfully L. B'JJrvillei among 

 the Ischiopsopha' s. There is not the least hesitation in Mr. Gestro's expression; 

 „ L. D' TJrvillei ha la particolarità d'esser priva di zone stridulanti , cionondimeno 

 non si può togliere dal genere Ischiopsopha per la sua forma generale, per 

 quella dello scudetto, del processu mesosternale e del pigidio." 



6) 1. e. p. 94. 



7) 1. e. p. 93. 



8) Deutsche Ent. Zeitschrift, 29 Jahrgang, 1885, p. 350; was already named 

 so before in the 65th Naturforscher- Versammlung at Gotha, 1883, 



