236 Mr. F. W. Edwards on the 



On'cotopus hasalis (Staeger). I., B., S., G. 

 Orthocladius ? conformis (Holmgren). S. 



F pleuralis, Mallocli. A. ^ 



Camptocladius incertus (Becher). S. 



lasiophthabnus, Mallocli. A. \ 



Metriocneinus callosus { Becher). ? B. 

 Trichocera maculipennis, Mg. E., I., G., A. 

 lutea, Becher. B. 



Most of the species in this list are known to occur else- 

 where, and these are marked as follows: — E., Europe; A., 

 North America ; G., Greenland ; I., Iceland ; B., Bear 

 Island ; S., Spitsbergen. The two Orthocladius, in this list 

 may be male and female of the same species^ and the two 

 Camptocladius are doubtfully distinct. 



Mr. Bristowe writes : — '' By the time we left Jan Mayen 

 — the beginning of September — summer was drawing to a 

 close. Judging by the advanced stages of several Nemato- 

 ceran larvse found just before our departure, besides pupae, it 

 seems probable that they pass the winter in the pupal stagp, 

 though it is also likely that they can do so in the larval 

 stage. Mr. Porsild, who is stationed at Disco, tells me he 

 has artificially frozen Lepidopteron larvae and pupae until they 

 have become as brittle as twigs. Yet on being thawed the 

 great majority have recovered. 



'^ There are no biting forms of Nematocera on Jan Mayen 

 — at least, we did not notice any biters." 



1. Sciara iridentata, Hubs. 



Several specimens, including both sexes, were collected by 

 Mr. Bristowe. An easily recognized species, on account of 

 the well-marked hypopygial characters and the short stout 

 antennae. 



2. Sciara hicolor^ Mg. 



Recorded by Becher ; not examined by me. 



3. Sciara glohicepSj Becher. 



The original series under this name comprised one male 

 and four ieniales. Tiie male should be taken as the type. 

 It shows the following characters : — i?i a little shorter than 

 R and ending well before the level of 7/if; halteres and palpi 

 both pa^e (possibly faded) ; no macrotrichia on Jf and Cu; 

 antennal segments about twice as long as broad ; clasper a 

 little over twice as long as broad, with a single rather 



