148 ON THE CLASSIFICATION 



Having deducted the species that enter in these new genera, 

 there remains a genus Lomajitera with three different types, viz: 



1°. Species with visible scutellum and all the other characteris- 

 tics of IschiopsopJia , excepted the stridulating-organs : — L. cera- 

 mensis Wall. etc. 



2°. Species with the scutellum totally covered by the median 

 lobe of the thorax; the pygidium conically elevated in both the 

 sexes but in the female ordinarily strange compressed; broad heavy- 

 bodied species: — L. pa^ma Guér. etc. 



3°. Species with the scutellum totally covered by the median 

 lobe of the thorax ; a hemispherical , strongly depressed pygidium , 

 equal in both the sexes, but in the female with an impression 

 at the underside; broad but flat-bodied species: — L. validipes 

 Thoms. etc. 



Mr. van Lansberge has already paid attention to the sub 3 

 mentioned Lomapiera' s and has given a synopsis of them ^ ) ; un- 

 happily he has intermixed it with species I mentioned sub 2. 



Having a genus with such different forms it is with full right 

 that Mr. van Lansberge says: «je ne crois du reste pas qu'on 

 puisse conserver ce genre (i. e. Ischiopsopha) , certaines espèces 

 offrant des passages ou des anomalies qui en rendent la classifica- 

 tion dans l'un ou l'autre genre difficile» ^). — However we will 

 see that with little trouble the classification is to make an easy 

 and natural one. 



Returning now to my own inquiries , I commenced to prepare the 

 forceps of the same species (with the exception of /. rw/^Krtz. and 

 diapJionia Krtz. , species I do not possess) as figured by Dr. Kraatz, 

 and found the same types for Thaumastopeus (fig. 1), Ischiopsopha 

 (fig. 2) and Lomaptera (fig. 3), but besides these three I found 

 to my great estonishment still a fourth and very peculiar one for 

 Lomaptera xanthoims Boisd, (fig. 4). What kind of mistake there took 



1) Comptes-Eendus de la Soc. Ent, de Belgique, 1880, p. CXXViî and CXXVni. 



2) 1. c. p. CXXV. 



