1910.1 65 



common on sandy parts of the shore. Bhynchites minutus, Herbst, Portmore 

 Lough. Ajnon sethiops, Herbst ; A. gyllenhali, Kirby, and A. senicuhis, Kirby. 

 Erirrhinus scirpi, F., and E. sethiops, F., a few sj)ecimens of the last mentioned 

 species occvirred in flood refuse at Shane's Castle. Bagous glabrirostris, var. 

 nigritarsis, Thorns., common. Cionus pulchellus, Herbst ; Shane's Castle, in 

 company with Phyllobrotica (Biickle). Ceuthorrhynchus arcuatus, Herbst ; I 

 found a few specimens of this rare species by sweeping on the banks of a stream 

 running into the lake at Shane's Castle in June, 1902, and Mr. Buckle subse- 

 quently secured a fine series ; it has not been previously recorded from Ireland. 

 In some of the Lough Neagh specimens the groimd-colour is rather dark, with 

 the white marking very distinct, causing the insect to resemble the allied C. 

 asperifoliarum, an insect unknown as yet from Ireland. Rhinoncus castor, F. 

 Euhrychhis velatus, Beck, and Litodactylus leucogaster. Marsh., in weedy drains 

 at Glenavy and Shane's Castle. Phytohius comari, Herbst, P. 4!-tuherculatus, F. 

 and P. cayialicidatus, Fiihr., Shane's Castle. Limnobaris pilistriata, Steijh., 

 all the Irish specimens of Limnobaris that I have seen are referable to this 

 species. Pityogenes bidentatus, Herbst, Shane's Castle. 



Cryptophagus bimaculatus, Panz. 



When at Lough Neagh iu June, 1902, 1 captured a few specimens 

 of this insect by sweeping amongst reed-beds on the shore of the lake 

 at Shane's Castle. An excellent definition of it is to be found in 

 Ganglbauer's " Die Kafer von Mitteleuropa," iii, p. 678. The follow- 

 ing short description of the Lough Neagh specimens may prove useful 

 for reference : — 



Colour in mature specimens reddish-brown, with an ill-defined black median 

 band on the elytra, this being in most specimens i-educed to a large black spot 

 on each of them. Head and thorax strongly, deeply, and closely punctured ; 

 thorax about twice as broad as long, narrower than the elytra, strongly and 

 regularly serrated along the side-margins, with no trace of the more or less 

 conspicuously larger tooth near the middle, which is such a characteristic feature 

 of all the known British species of the genus, the refiexed anterior angles not 

 prominent. Elytra oblong-oval, convex, the punctures at the base almost as 

 strong as those of the thorax, wider apart and much finer towards the apex. 

 The entire insect clothed with rather long loosely attached pubescence. 

 Antennae of moderate length (about '716 mm.), comparatively slender, the 

 fifth segment a little shorter than the third and noticeably longer than the 

 fourth, the club rather narrow. Length, 1'8 — 2 mm. 



This interesting species has a northern and central range in 

 Europe (Reitter), extending as far north as Finland. According to 

 Heyden, it ranges also into Siberia (Cat. Coleopt. Siberia, Nachtrag, I). 



G. bimaculatus may be easily recognised by the structure of the 

 side-margins of the thorax, and the black marking of the elytra, indeed 



F 



