PROCEEDINGS OF SOCIETIES. 
123 
5. suffocata , n. sp.— Oblonga subdepressa nigra subtiliter pubescens, antennarum 
basi pedibusque rufescentibus, prothorace coleopterorum latitudine angulis posticis 
acutiusculis , 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.— -flavicornis, Waltl.— marina , Mots.—Rare, among 
lichens, Wicklow, Cork, &c. 
8. grandicollis , Er.; Fn.Fr.— fascicularis, Gilm.; Redt.— lata p., Mots.—Still 
rarer than the preceding, Wicklow. 
9. Trichopteryx (?) mollis, n. sp.— Oblongo-ovata depressa nigra cano-sericea , 
antennis tibiis tarsisque ferr ugineis, prothorace amplissimo angulis posticis productis 
acutis 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 coxae. 
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 Fran£aise 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 pro thorax, 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- 
9 aise; but is superior in size to either, and the locality in which it occurred is 
different. 
