(Page 610) 



France, England, Iceland and Scandinavia. Heretofore not recorded in this 



country, where its appearance however is not unlikely. 



4. 0. riparium Thorns. 



(Thorns. Ofv. Vet. Ac. Forh. 1856, 224; Skand. Col. Ill, 212; Rey Bre'- 

 vip. 1880, 196; Janglb. Kaf. M. II, 734). 



From rivulare , which this species is like in form and size, also in 

 color of antennae and legs, it is easily separated by the following devi- 

 ations: 



The elytra are black with brownish posterior margins, more rarely at 

 greater extension brownish; the neck with only simple and fine punctation, 

 but very densely chagreened and dull; pronotal longitudinal impressions 

 at middle most often deeper, its posterior set off side-margins not smooth 

 surfaced, but shagreened and sometimes reddish; elytra a little longer than 

 in rivulare , more than twice as long as pronotum, feebly longitudinally 

 convex, a little finer and denser, often feebly rugose punctation; abdomen 

 dully glistening. L. 3.5-4 mm. (Page 611) 



On the strand under seaweed and at animal offal. Distributed at North 



European coasts; rather rare in this country. 



5. 0. oxycanthae Jravh. 



Uravh. Mon. 210; Erichs. Sen. Spec. Staph. 877; Kraatz Ins. D. II, 982; 

 Rey Bre'vip. 1880, 209; Janglb. Kaf. M. II, 735). 



A small species, in form most like rivulare , but much smaller, with 

 dark antennal base and feeble impressions on pronotum. 



Black; head, pronotum and elytra somewhat glistening, abdomen more 

 dull; elytra brown; antennae entirely black, or the middle joints (2-5) 

 brownish; legs reddish-yellow. 



-54- 



