150 ON THE CLASSIPICATION 



L. ÄdolpJiina Lansb. , which proves following its author that the 

 genus IschiopsopJia is quite inadmisible , I think , judging from the 

 descriptions, that they are true Ischiopsopha' s , so as I have cir- 

 cumscribed that genus; I may still observe that I. hif asciata Quoy 

 et Gaim. has also a much more convex breast than any one of 

 the Isc/iiopsopka-sçecies I am acquainted with. 



The genus Lomaptera (fig. 3, 3«, 36, 3c), already disencum- 

 bered from the species with visible scutellura , has only to include 

 the species with a conically elevated pygidium. 



For the Lomaptera's with a simple , strongly depressed pygidium 

 a new genus is to be created, for which I propose the name 

 Mncteropliallus (fig. 4 , 4« , 4Ô , 4c). Most of the Mucterophallus 

 species have still a peculiar coloration, thorax and elytra being 

 ordinarily partly testaceous. 



In order to complete this study I let follow hereafter the diagnoses 

 of the four genera, so as I have circumscribed them. 



I think the systematic value of the forceps shape is proved once 

 more by this study; I have not yet an opinion whether the exa- 

 mination of the forceps will be decisive for separating closely allied 

 species , not having prepared a sufficient number of one and the same 

 species to know if it is subject to much variations , but I feel quite 

 sure if Mr. Gestro had prepared the forceps of 31. validipes and 

 M. xantJiopus, he would never have ventured to unite these species. 



DIAGNOSES OF GENERA. 



Thaumastopeus Kraatz. 



Clypeus value prolongatus , profunde incisus, lobis subangustatis. 

 Thorax angulos anticos versxis sensim angustatus ^ lateribus subrectis 



vel suhangulosis , loho postico subangustato , ajjice subtruncato , 



scutellum hand ohtegente. 

 Scutellum valde elongatum , angiistum, acutissimum. 

 Elytra subparallela, apice rotundato-truncato. 

 Mesosterni processus valde productus^ acumi?iatus , plus ?ninusve 



incurvatus, 



