This genus was established by Dr. Leach; but no characters 
have been given until now, and I shall here describe both the 
species. 
C. fucicola Leach . — Curtis Brit. Ent. pi. 322. 
Black or piceous, shining, with a few long hairs. Head 
broader than the thorax, the sides covered with large irregu- 
lar punctures. Antennae fuscous, excepting the three basal 
joints, which are shining black, ferruginous at their union, 
and the apical one is entirely of this colour. Thorax with a 
double row of three large and one small punctures on the 
back, and five on each side. Scutellum and elytra dull, with 
a faint blue tint, obliquely punctured, and clothed with very 
short depressed hairs. Abdomen minutely punctured, and 
clothed with short decumbent hairs. Legs ferruginous ; thighs 
and tibiae inclining to piceous at their middle. 
Ohs. — The longer line in the Plate shows the length of the 
specimen figured, but I have another considerably longer. 
Dr. Leach used to take this nondescript on Mount Edge- 
combe, near Plymouth : to him I am indebted for my authentic 
specimen, and I took another last autumn on the shores of the 
Isle of Wight. 
C. xantholoma Gran . Monog. p. 41. n. 3. — Helbwig. — late- 
ralis Kars. — Kir. — littoralis 8$ tessellatus Steph. 
Black and shining, with a few long hairs. Head not broader 
than the thorax ; two large punctures between the eyes, and 
several on each side. Antennae fuscous, excepting the three 
basal joints. Thorax with a double row of three large punc- 
tures on the back, and a few on the sides. Scutellum and 
elytra dull, thickly punctured, and densely clothed with de- 
pressed pubescence ; the latter oblong, and the lateral margins 
ochreous. Abdomen thickly and minutely punctured, with a 
large puncture on the side of each joint, clothed with pu- 
bescence, which in certain lights exhibits two or three rows of 
griseous spots down the back. Legs piceous, the joints and 
tarsi more or less ferruginous. 
Ohs. — The shorter line in the Plate shows the shortest 
length of this species : it is sometimes as long as the other 
line, but always narrower than C. fucicola. 
It appears to be common on all our southern sandy coasts, 
under sea-weeds and stones. The end of May I have found 
it on the shores of the Southampton Water; in August and 
October at Black-gang Chine, Isle of Wight, at high-water 
mark ; and in the latter month near Torquay, Devon. It has 
also been observed near Swansea. 
The plant is Euphorbia Portlandica (Portland Spurge), 
gathered in the island, from which it receives its name. 
