6 ARKIV FÖR ZOOLOGI. BAND 10. NIO (). 



In this connection I must not omit to mention that an 

 hitlierto uncertain species described by Pic in Micliaelsons 

 and Hart7neyers Fauna Siidwest- Australiens Bd. II. Lieferung 

 13, 1909, under the name of Paussoptinus hrevipennis on closer 

 examination proves to be a typical species of the genus 

 Decemplocotes M. Prof. W. Michaelsen has had the great 

 kindness to send me the good drawing of the species that is 

 published here, whicli makes it quite clear that it belongs to 

 that genus (Textfigure 6). 



In the following I have divided the Ptinidce into not less 

 than five subfamilies, using as a basis of classification chiefly 

 the shape and form and the degree of reduction of the an- 

 tennae. 



Table of the Subfamilies. 



I. Body ver3^ ronnded and globiform, laterally compressed. 

 Elytra enclosing the abdomen on the underside, greatly 

 reducing sternum and abdominal ventral parts. 



Subfam. Gibbince. 



Genera: Gibbium Scop., Mezium Curt, Mezio- 

 morpum Pic, Damarus Vi^BiinG., Pseudomezium 

 Pic. 



Distribution: Cosmopolitic. 



II. Body normally developed. 



A. Antennse of ordinary shape and form, 11-jointed, all 

 joints filiform. Head not constricted behind the eyes, 

 which are of normal size. 



Subfam. Ptinidce. 



Genera: Casopus Woll., Piotes Woll., Piarus 

 WoLL., Ptinodes WoIjIj., Tr igonogenius Sol.ibr., 

 Spcecicus Woll., Pitnus Gosh., Niptomezium 

 Pic, Niptus Boield., Tipnus Thoms., Euro- 

 stodes Reild., Eurostoptinus Pic, Eurostus 

 Muls & Rey., Niptinus Fall, Micropiinus 

 Kiesw., Ptinus L.. Malieoptinus Pic, Gylin- 

 droptinus Pic, Diplocotidus Pér., Diaphobia 

 Oll. 



Distribution: More or less cosmopolitic. 



