352 X()\-i'.i>'i'i isii i.\si:( rs. 



fuscous, unci Avith a tew larger fuscous spots, whereof one at the arculus 

 is much larger and more conspicuous Mian the others, the costal and 

 apical margins somewhat regularly spotted with fuscous, fringe wholly 

 yellow, neuration slightly fuscescent. Posterior wings, pale smoky 

 fuscous, pterostigma conspicuously yellow, the apical margin is yellow, 

 festooned inwardly, fringes wholly yellow, neuration fuscous. Expanse 

 20-25 mm." INIr. McLachlan noticed a single female example of this 

 species among a few insects collected by the late Francis Walker in 

 Guernsey, and he wrote to me describing tlie insect and asking me to 

 search for more specimens. I soon found the locality where they occurred 

 and was able to send him about 30 specimens which did nc>t vary in any 

 way. Mr. McLachlan says that " its peculiar colour and markings are so 

 constant as to fully entitle it to rank as distinct" ; although he failed 

 to find any difference in form and structure from the common British 

 montamis, and remarked that " It may be that we have here a well-marked 

 instance of the power of long isolation to produce a form worthy of being 

 considered specifically distinct." In Supplement part 2, page 71 of the 

 Monograph before mentioned, Mr. McLachlan says " I have succeeded in 

 obtaining examples of a PhUopotam^Di from Jersey for purposes of com- 

 parison with the distinct form from Guernsey that I named Philopotamus 

 iusularis. Mr. W. A. Luff made an excursion to Jersey and found a 

 species at a stream near Pleinmont Point in that island. I can only 

 regard these as inoNtanns. They have the golden yellow of the anterior 

 wings more extended than is usual in Continental examples, but not 

 more so than is often the case in others from Britain, and they do not 

 show an aiDproach towards the Guernsey ins/r/aris, which thus maintains 

 its insular distinctness." 



HEMIPTERA-HETEROPTERA. 



Straehia ornata, Lin. l have taken one specimen only of this rare and 

 beautiful species on the cliffs at Petit Port in 1889. 



Braehypelta aterrima, Foerst. This is a large species, entirely of a black 

 colour. It is not uncommon crawling on dry paths on the cliffs, and 

 burrowing in the sand on the west coast of Guernsey. 1 have also taken 

 it in Herm and Sark. 



Lygseus punetatO-gUttatUS, Fah. These pretty little red and black bugs 

 are abundant at the roots of Foxglove on the cliffs in spring, summer 

 and autumn ; they are gregarious and follow each other along a track 

 like ants. By stirring the soil at the roots of Foxglove, the immature 

 forms of all sizes may be seen in great abundance in July. When about 

 half-grown they are entirely of a bright red colour. I have taken them 

 in all the islands 



Leptopus boopis, Fourc. A small dark species with very prominent eyes 

 captured by Mr. E. D. Marquand in Herm, May, 1904. ' Mr. E. Saunders 

 says it is a very interesting capture, as it does not occur anywhere else 

 nearly so far north as Herm. 



Lygseosoma retieulatum, H.S. A small brown species common on the 



cliffs of Guernsey and Alderney. 

 Heteroeordylus parvulus, Reut. I took two specimens by sweeping with 



a net on cliff's near the Gouffre in 1891 and another, also by sweeping on 



the cliffs near Bon Repos, on June 21st, 1892. 



HEMIPTERA-HOMOPTERA (Coeeidse). 



ExseretOpUS formieetieola, Xewstead. This species is new to science, and 

 up tu the present Guernsey has the honour of being the only place where 

 it has been found. It was discovered by myself during one of the 

 Society's excursions in June, 1893, near Bordeaux Harbour in ant's nests 



