19G Mr. F. W. Edwaids on 



THaniesa arctica, Holmgren. S. 



lundstruemi, Kietier {nrctica, Kieff., 1911, uec H.). S. 



t* pouliutii, sp. n. S., N. 



■t* septiina, sp. n. B. 



• {Adiamesa) fii/pcrborea, Holmgren. B. 



* ( ) ursus, Kieffer. B. 



Psilodiamesa spitzbejt/ensis, Kieffer. S. 

 Tatit/pus/Hffidus, Holmgren. B. 



Culicidae. 

 *Aedes alptntis (L.) (Culex nigripes, Zett.). S., G., L. 



Anisopodidae. 



t* Trichocera lutea, Becber. li., J. 

 ? hiemalis (Deg.). S. 



SciaridsB. 



The collection contains 10 specimens of Sciara, represent- 

 ing 6 or 7 species — of these 3 or 4 are represented by single 

 more or less damaged examples, of which it need only be 

 said that they do not appear to belong to any of the species 

 descril)ed by Holmgren. Little can be done with such 

 specimens until the Palaearctic species have been dealt with 

 as a whole by modern methods. 



The three remaining species are the following : — 



Sciara trideniata, Rubs. 



S^Tionyms : S. atrata, Holmgren, nee Say ; S. holmgrem, Jacobs ; 

 S. validicornU, Lundbeck. Tbe names tridentata, holmgretii, and 

 validicomis were all proposed in 1898 : I do not know in what 

 order, but use tbe one under whicb the species bas been redescribed 

 by Johaunsen. 



Prince Charles' Foreland : Pt. Carmichael, Freshwater 

 Bay district, N.E. of island, 4. vii. 1921, c. 40 ft., on stone 

 of shingly raised beach ; 1 S . 



The specimen agrees sufficiently well with Holmgren's 

 description of S. atrata, so that I have no doubt concerning 

 the synonymy indicated above. The peculiar structure of 

 the male claspers makes the species an easy one to recognise. 

 Hypopygium, fig. 1 (p. 197). 



Sciara pallidiventris, Holmgren. 



Spitsbergen : Bruce City, head of Klaas Billen Bay, 

 22. vii. 1921 ; 0-50 ft., on shingly raised beach with Dryas; 

 2 3. 



The male claspers (fig. 2) are constructed somewhat as in 

 S. mutua, Joh., to which the present species appears to be 

 closely allied. 



