172 AUSTRALIAN PSELAPH1D.E 



extreme types, become more or less rounded, and the under part 

 of the head is convex. Between those two extreme forms every 

 degree of transition is to be found. 



The mesosternum is composed of two parts, an anterior one 

 more or less declivous, for the resting of the anterior cox*, and 

 the posterior one which is flat and more or less produced between 

 the intermediate coxae. 



Tn Eupines, Patranus and Brabaxys, the anterior part of the 

 mesosternum is simply declivous, the edges are more or less 

 sharpened but never carinate; in Abryxis as well as in some other 

 American genera, closely allied, this anterior part of the meso- 

 sternum is not only declivous but more or less strongly concave 

 and carinate all round. This character, together with the 

 relative length of the elytra, induces me to look on Abryxis as a 

 really distinct genus. 



In Eupines and its synonymous forms, the posterior part of the 

 mesosternum varies to a certain extent. In the extreme type, it 

 is absolutely flat and broadly produced between the intermediate 

 coxse, which are distant from each other. 



In other types the posterior part is still flat, but not so broad 

 between the intermediate coxse, which are but a little distant from 

 each other ; in others this posterior part of the mesosternum 

 bears a more or less pronounced carina, which is always broad 

 and flattened, and extends more or less between the intermediate 

 coxre. Between these three extreme types every degree of tran- 

 sition is to be found, so that the characters of the posterior parts 

 of the mesosternum prove to be of no more generic value than 

 those of the underpart of the head. 



The only permanent characters of Eupines are the following: — 



Corpus plus minusve globosum vel ovatum, larve. Antenrue 

 variabiles, clava pluriarticulata. Prothorax absque foveis et 

 sulcis. Elytra abdomine longiora, plus minusve ovata, striis 

 dorsali deficienti et suturali interdum obsoleta. Abdominis 

 segmentis primis dorsalibus inter se subsequalibus, margine laterali 

 plus minusve angustata. Mesosterni parte anteriori declivi 



