PROCEEDINGS OF SOCIETIES. 123 



5. suffocata, n. sp. Oblonga subdepressa nigra subtiliter pubescens, antennarum 

 basi pedibusque rufescentibus, prothorace coleopterorum latitudine angulis posticis 

 aeutiusculis, abdominis segmentis tribus retectis. Long. lin. 



Much narrower than Tr. fascicularis, but as long; more than half the abdomen, 

 or three segments, being uncovered by the elytra ; the last segment large, nearly 

 semicircular, with three points. Antennae blackish, the first two joints piceous. 

 Legs and coxae obscure reddish. Elytra blackish to the end. 



Found in October, the larva and perfect insect together, under damp fallen leaves 

 on stones, in the bed of a dried-up brook (Glen-na-Chatta) of the Shournagh river 

 (Cork). When alive, the elongated form, somewhat like a Hypocyptus, was very 

 striking. 



Obs. Tr. abdominalis, Fn.Fr. 333, 8, seems to differ from this species by 

 the more produced angles of the base of prothorax, the lighter colour, and 

 rather inferior size. The habitat also is different viz., in the nests of Formica 

 rufa. 



6. fascicularis, (Herbst.) ; Heer ; Er. ; Fn.Fr. ; Woll. minutissima, Marsh. 

 atomaria, Steph. grandicollis, Mann. intermedia, Gilm. ; Redt. lata p., Mots. 

 Very abundant about dunghills and in pastures. 



7. atomaria, (Degeer^) ; Gyll. ; Heer ; Er. ; Gilm. ; Redt. ; Fn.Fr. ; Mots. 

 minima, Marsh. ; Steph. -Jlavicornis, Waltl. marina, Mots. Hare, among 

 lichens, Wicklow, Cork, &c. 



8. grandicollis, Er. ; Fn.Fr. ; fascicularis, Gilm. ; Kedt. lata p., Mots. Still 

 rarer than the preceding, Wicklow. 



9. Trichopteryx (?) mollis, n. sp. Oblongo-ovata depressa nigra cano-sericea, 

 antennis tibiis tarsisque ferrugineis, prothorace amplissimo angulis posticis productis 

 gcutis testaceis, elytris truncatis apice testaceo-limbatis. Long ^ lin. 



In outline not unlike Tr. atomaria, but much depressed, and thickly clothed 

 with a fine silky whitish pubescence, without distinct punctures. Prothorax 

 still wider than in that species, the sides much rounded, widest behind the middle, 

 the base deeply sinuate-emarginate ; the hinder angles being much produced back 

 and pointed, coloured testaceous to a pretty large extent. Elytra at the base 

 narrower than prothorax, and tapering a little to the tip, where they are abruptly 

 truncated, with the inner angle sloped away, so that their joint extremity is a little 

 notched at the suture; the narrow hind edge pale testaceous. Abdomen with 

 three dorsal segments uncovered and deflected, edged with pale pubescence ; seven 

 ventral segments, the 1st large, the following four very short, the 7th triangular 

 (sometimes ending in three points a sexual distinction ?). Mouth very prominent, 

 the bilobed ligula and the mala exserted. Palpi pale. Antennae dusky testaceous, 

 long and slender, with the club indeterminate ; the first two joints darker ; the third 

 scarcely shorter than the fourth. Eyes pubescent. Mesosternum, shorter than 

 usual in Trichopteryx, with a short channeled keel, applied to the prosternum. 

 Hind legs very remote, more so than in Ptenidium even. Hind coxce large trian- 

 gular, but not transversely dilated, covering only the base of the thigh with the 

 trochanter. Legs testaceous, hind coxae blackish, femora blackish-brown, except 

 the tips of the anterior pairs. 



Differs both from Trichopteryx and Ptilium, in having one ventral segment 

 more (in this agreeing with Ptenidium), and is intermediate between them as to 

 the size of the hind COXSB. 



Inhabits sandy sea-coasts, rather rare. 



Note. Trichopteryx fucicola, Alibert, seems to agree with this in the form of 

 the prothorax, in pubescence and colour (though according to the authors of the 

 Faune Francaise the legs are entirely testaceous) ; but in the comparison made 

 between it and Tr. intermedia, the depressed form, the figure of the antennae and 

 the coxae, of our insect, could scarcely have passed unnoticed by their accurate 

 and practised eyes. Alibert describes impressions of the prothorax, which may be 

 inconstant, as they do not mention such. Tr. umbricola, Woll., seems also to 

 differ from ours, and to come nearer to the species, described in Faune Fran- 

 9aise ; but is superior in. size to either, and the locality in which it occurred is 

 different. 



