1889. > 421 



Gomphocerus sibiricus, Linne, Syst. Nat., i, 2, p. 701. — Stephens (Mandib., vi, 

 p. 32) describes this as British, and says " it is in Mr. Hope's rich collection, taken 

 on the hills near Netley," but without further confirmation, I do not think we can 

 include it in our fauna. Brunner says (p. 132) " Habitat, in meadows on high 

 mountains, in northerly (sic) England (Stephens), ? Hartz (Panzer), ? Dresden 

 (Fieb.). In the Alps in many places, in the southern parts, but never under 1200 

 metres, therefore always in the region of the Alpine rose," &c. He also records it 

 from the Apennines, Pyrenees, Caucasus, Siberia, &o. I do not think we can expect 

 it to occur on our S. English downs. 



(To be continued). 



TRICROPTERA COLLECTED IN ICELAND BY ME. P. B. MASON IN 

 THE SUMMEE OF 1889. 



BY ROBERT McLACHLAN, F.R.S., &c. 



During his excursion in Iceland from June 21st to July 18th of 

 the present year, Mr. P. B. Mason, M.E.C.S., F.L.S., collected nearly 

 100 examples of Tricfioptera, which he placed in my hands for exami- 

 nation. The result is as follows : — 



Fam. PRBTOANEID^. 



Agrypnia islandica, Hag. Reykjavik, 2 £ . 



The two examples before me strongly resemble A. Pagetana in 

 general appearance, but the anterior-wings are slightly smoky, and 

 their neuration very strong and black. In structural characters they 

 are exceedingly like A. picta. 



N.B. — When I wrote my " Eevision and Synopsis" I had not seen this species ; 

 the description (p. 29) was drawn up from that by Hagen (Verhand. zool.-bot. Wien, 

 1873, p. 129), and the figures (pi. iv) were reproduced from drawings kindly lent to 

 me by him, taken from a (J in his collection. On comparing the details with 

 Mr. Mason's examples I find discrepancies, the chief of which is the absence of the 

 triangular tooth at the base of the apical club of the inferior appendages (indicated 

 both in description and figure). A careful and prolonged examination under the 

 microscope has failed to reveal this tooth ; an illusion caused by the black hairs 

 clothing the inner-side of the club occasionally simulated a tooth, but it vanished on 

 further search. On the other hand, there is a triangular tooth-like projection of the 

 oblique apical edge of the lower joint of these appendages, but it is directed outward 

 and upward, not downward. I can scarcely think that two very closely allied 

 species exist in Iceland, and leave the matter for further investigation. Examples 

 of A. islandica, from the original source, are recorded as to be found also in the 

 Berlin and Vienna Museums. 



Tarn. LIMNOPHILIDM. 



Grarnmotaulius atomarius, F. Reykjavik, 3 <$ , 1 $ . 



The structural characters agree entirely with British examples, 



