20 
PROCEEDINGS OF SOCIETIES. 
the fallen leaves. I failed in obtaining another. These diatant localities were all 
in limestone districts, and near trees, principally beech. 
At Finnoe there occurred to me another Pupa Umbilicata, with a second tooth. 
The second tooth in these shells is about the same distance from the pillar lip which 
the ordinary one is from the outer lip. The additional tooth is much smaller than 
the normal one, a little within the margin, not forming a continued line with the 
outer margin, as the opposite one does. This seems to me but a variety of Pupa 
Umbilicata, which I have found very variable. It is not in the least like the figure 
of Pupa Bidentata in Brown’s British Land and Fresh-water Conchology. 
Mr. Haliday also presented the detailed descriptions of two Coleopterous lar¬ 
vae, shown at a previous meeting. 
1. OcHTHEBUIS PUNCTATUS. Vol. III. PI. 3. Fig. 3. 
The oblong rather depressed larva, about a line in length, is found, in com¬ 
pany with the perfect insect, on the mud of dried-up pools of brackish water, 
under the film of green matter, on which it probably feeds It is shining pitchy 
black, with some pale hairs thinly scattered on the head and limbs, and disposed 
in a whorl along an impressed line surrounding the hind margin of each abdo¬ 
minal segment. The thoracic segments have a row of finer hairs before the 
hind margin. The head is semi-circular, nearly as broad as the thorax, not 
narrowed to a neck, the mouth projecting downwards, the labrum large, almost 
as long as broad, the anterior margin sinuated, with the middle lobe most ad¬ 
vanced. The mandibles reddish brown, very stout at the base, and the inner 
edge there furnished with a convex grinding surface (molar), the slender tip is 
gently curved, and its inner edge cut into six minute teeth. One mandible has 
also another internal tooth beyond the molar. The maxillae are rather slender, 
the lobe longer than the shaft, slightly curved and ciliated along the inner edge 
towards the acute point. The three-jointed palpi rather exceed the lobe, the 
second joint is rather shorter than the others, the last pointed. The labrum 
is about twice as long as broad, the ligula being very little exserted, slightly 
bilobed and faintly ciliated. The very minute palpi consist of two joints, be¬ 
sides the very short scape, the second being the smallest. There are two ocelli 
at each side of the head, behind the antennae. The antennae are shorter than 
the breadth of the head, composed of two stout basal joints, ferruginous, linear, 
another joint longer than those two together, and a minute obconie fourth joint, 
crowned by a papilla, encircled by a few hairs. The prothorax somewhat 
broader behind, with the sides and basal angles rounded, longer than the follow¬ 
ing two segments, which again exceed those of the abdomen. This tapers only 
towards the tip, and the last segment ends in two styles as long as itself, crowned 
by a two-jointed shorter process, with the second joint exceedingly slender, end¬ 
ing in a few long hairs. The legs are about as long at the breadth of the body, 
with stout coxa, trochanter very short, femur nearly linear, tibia tapering to¬ 
wards the end, tarsus a simple slender claw, not half as long as the tibia. 
2. Diglossa mersa. Yol. II. PI. 3. Fig. 4. 
The larva found in July and August, along with the perfect insect, under 
stones on the sea coast, near Dublin, and also at Ferriter’s Cove and Carragh 
Creek in Kerry, is rather more than a line long, of a dull creamy white, usually 
appearing marked with a longitudinal dark line, the translucent contents of the 
intestine. The head is horny and pale testaceous, but the thoracic segments 
show little trace of any horny shield. The head is rounded and broader than 
the thorax, the rest of the body nearly linear, only beginning to taper towards 
the tip of the abdomen ; the tubular segment with which it ends is armed with a 
stout bristle at each side, towards the end, but wants the terminal styles so pre¬ 
valent in Staphylinidous larvae. The head, body, and legs, are sparingly beset 
with hairs, extending to the area of the eyes. The antennae, scarcely as long as 
the head is broad, are composed of three joints, the third, more slender and as 
long as the two preceding together, ends in a lateral papilla, preceded by a minute 
spine. The mouth is prominent; the labrum short, transverse, entire, finely 
edged with a denticulated membrane ; the mandibles long, tapering to a gently 
