Vol. XI] VAN DYKE— PRIBILOF ISLANDS COLEOPTERA 163 



rounded, disc alutaceous and finely sparsely yet distinctly punctate 

 and pilose, more markedly at sides, a fovea at sides in front of 

 middle. Elytra at least a third longer than prothorax and one- 

 half broader, with sides straight and diverging from humeri, the 

 margin fine and reflexed, the apex of each elytron obliquely trun- 

 cate outwards, the outer apical angles broadly rounded, the disc 

 moderately coarsely punctured and minutely pilose. Abdomen 

 broader than elytra, above minutely rather sparsely punctate and 

 pilose, beneath more definitely but equally punctured. Length 

 4 mm., breadth 2 mm. 



Holotype and three paratopes in my collection, collected on 

 St. George Island, Pribilof Islands, Alaska, June 14 and August 

 5, 1897, by Professor Trevor Kincaid, and by him kindly pre- 

 sented to me. Two paratopes collected on St. George Island, 

 July 1, 1920, by Dr. G. Dallas Hanna are in the collection of 

 the California Academy of Sciences, as is also a series of eight 

 specimens of the same from St. Paul Island, collected by Dr. 

 Hanna. In Dr. F. E. Blaisdell's collection, there are also several 

 more from the Pribilofs, collected July, 1911, as well as two 

 from Nome, Alaska, collected June, 1899. In my collection there 

 is one from Teller. 



Type locality, St. George Island, Pribilof Group, Alaska. 



This species, I have for some time considered as but a dark 

 phase of the widely distributed Arpedium brunnescens Sahib. 

 Upon more careful comparison with that species, I find, however, 

 that it differs not only in color but by being generally more robust, 

 by having antennae of a different type, the joints 8 — 10 in brun- 

 nescens being decidedly transverse, by having more prominent and 

 angular tempora, and a more definite and abundant punctuation 

 and pilosity, the abdomen being especially more punctate and 

 pilose. So far as I know, beringensis is local to the Pribilof 

 Islands and the neighboring Seward Peninsula on the mainland, 

 while brunnescens is found on Unalaska Island, and extends to 

 Banff, Alberta, and the Lake Superior region. It is also found 

 throughout the arctic portions of Europe and Asia. 



