465 



Notes on the Bruchidae and Their Parasites in the 

 Hawaiian Islands. 



BY JOIIX COLUURN I'.KIDWKLL. 



Gcograpliieul. 



The BrucJiidae constitute one of the smaller families of Co- 

 leoptera, about 700 species being listed in the most recent cat- 

 alog-ne, that of Pic (Coleopterornm Catalogus, pars. 55, 1913). 

 In this work thej are arranged in thirteen gcniera of which 

 Bruchuj^ alone is cosmopolitan in the sense that it extends into 

 all the nuijor zoogeographical regions. However, when this poly- 

 morphic genus is dismembered into its constituents it will 

 doubtless be found that none of these are so widely distributed. 

 Of the other genera SpermopJiagus and Paclnjnwrus (^=Caryo- 

 borus auet.) are Avidely distributed but do not extend into the 

 Australian region if we include New Caledonia in the Indo- 

 Malayan region where it belongs entomologically. Psendopa- 

 cliijmerus Pic (=Pachymei-us auct.) has its metropolis in the 

 ISTeotropical and extends into the Ethiopian and Palaearctic. 

 Canjmeaopon occurs in the Indo-Malayan and Ethiopian re- 

 gions. The remaining genera are known from a single region ; 

 Piliaehu>t, Pi/gohi'uchus. and Kytorvhlmis from the Palaearctic; 

 Pygiopacli yinerus, PJielomerus, Inipressohruchus, Megalorhipls, 

 from the Neotropical; Diegohruchus from the Ethiopian; no 

 peculiar genera occur in the Indo-Malayan, the Australian, or 

 the JSTearctic regions. The jSTeotropical region has the greatest 

 number of recorded species with about 300 ; next comes the 

 Palaearctic with al)out 200; the Ethiopian and Nearctic have 

 each about a hundred species known but when the African spe- 

 cies are as well known as the North American they will doubt- 

 less approach the numbers of the Palaearctic; from the Indo- 

 Malayan only about 50 species are recorded and from the Aus- 

 tralian only about 10 ; none are known to occur in the Polyne- 

 sian Islands or in New Zealand excepting those introduced 

 through commerce. 



