Dlpfera Xematocera fro)n Spitahergen. 199 



diameter of tlio sef^ment. In spite of Goetghebuer's state- 

 ment that his identification of C. ripurius was based on an 

 examination l)y Segny of s[)ecimens in the Paris Museum, 1 

 feel some doubt whether this is reidly the species which 

 Meigen intended to designate as C. riparius, since in Britain 

 I find tliat the commonest sea-shore ('hironomus is a closely- 

 allied species, which ditlers from the present one obviously 

 (though almost solely j in having a long though scanty beard 

 ou the outer side of the front tarsi of the male. Both 

 species are very common in Britain, and I can see no 

 difference between rather dark. British examples of C. niyro- 

 viridis and the Spitsbergen specimens. Kieffer's C.kochiumis, 

 from the Lofoten Is., may possibly be distinct, since he 

 states that the first segment of the front tarsus is nearly 

 twice as long as the tibia. 



Chironomus lugubris, Zett. 



Synonyms : C. spifzlfei-f/etisis, Kieflei" ; ? C. hyperhoreus, Holmgren, nee 

 Staeg. ; ? C. polarii, Bobemau. 



Spitsbergen : Bruce City, head of Klaas Billon Bay, 

 19-22. vii. 19:21 ; round huts, on shingle of raised beach, 

 and on flowers of Drijas octopetala ; 2 c? , 6 ? . Liefde Bay, 

 8. vii. 1921 ; coast tundra, 1 J (2\ G. Lonystaff), Cape 

 Boheman, N. side of Ice Fjord, 12. vii. 1921 ; flying over 

 stri|) of marsh-land ; -i ^ , \ ? . 



This is almost, if not quite, identical in structure with 

 the preceding, and should i)erhai)s be regarded as merely a 

 black variety of it. The specimens agree with Zetterstedt's 

 description, and the females with Kieffer's description and 

 figure, except that the fourth palpal segment is not quite so 

 long as dcscril)t;d. Holmgren's description of C. hxjperbureus 

 also agrees, with the seemingly important excejition that he 

 states that the cro.ss-vein is not infuscated. 1 think, how- 

 ever, there can be little doubt that Holmgren accidentally 

 transposed his statements regarding the cross-vein of C. 

 hyperhoreus and C. polaris, and that having done so he 

 placed them under the wrong headings. 



Lauterbornia ? coracina, Zett. 



Synonyms: Chiroynnnus contcinus, Zett.; C. lyoUuis, Holmgren, nee 

 Kirby ; ? Prochironomus koenigi, KietKer. 



Be.ak Island: S.W. of island, 17. vi. 1921 ; flying over 

 bare rock near tarns 4- and 5 ; 11 (^,5 ? . Inland from S. 

 coast, 15. vi. 1921; flying over mound green with vegeta- 

 tion; 15 <^, 3 ? . Walrus Bay, S.E. of island, 0-100 ft., 

 under stone :1c?- 



