386 



Orthocentrus Grav. 

 Many species appear to occur of this genus in the arctic 

 regions. Several arctic species have been enumerated, but the 

 descriptions are not good and the species difficult to determine. 

 As the genus wants a revision, and my material is not large, 

 I refrain from describing any new species. The one species 

 mentioned below I think is correctly determined. 



9. 0. hilaris Holmgr. 



One specimen from Hekla Havn 11.8.91. 

 Geographical distribution: Also found in West- 

 Greenland. 



10. Plectiscus bistriatus Grav. 



Hekla Havn, Røde Ö 14.-17.7.91, 11.8.91, 19.6.92, Gaase- 

 land 7.3.92, 27. 7.92. 



Geographical distribution: Common in West-Green- 

 land; also found in Sweeden. 



11. Ophion luteus L. 



Only one specimen is known from East-Greenland, taken 

 at Nagtoralik 19. 8.83. 



Geographical distribution: Not mentioned in the list 

 of West-Greenlands Insects, but has been found at Igaliko July 

 1897, and at Julianehaab July and August 1902. The species 

 occurs over a greater portion of Europe. 



12. Limneria frigida Lbck. 



Several specimens from Hekla Havn 25. 5. 92, 17. 6. 92, 

 Hold with Hope 20. 8. 92, Røde Ö 17.7. 92 and Sabine Ö 7. 1900. 



Geographical distribution: Up to now this species 

 has only been known from South-Greenland, where it appears 

 to be rare, as only nine specimen are known. It is a parasite 

 on Noctua larvae. 



13. L. Deichmanni n. sp. 



Black, head narrower than thorax, contracted behind the 

 eyes, which are feebly concave, antennae, mandibles and palpi 



