26 
Cyclina. In his late monograph he has united to this genus the 
Lucinopsis of Messrs. Forbes and Hanley; but the description of 
the animal here given will show that Lucinopsis is a very distinct 
genus, for it has separate siphons, whilst the type of the genus has 
the siphons united as in the other Dosiniana. It differs from Do- 
sinia in the absence of the anterior lateral tooth. 
CYCLINA SINENSIS. 
Mantle lobes free the whole length of the lower margin, the lobes 
then with a series of radiating muscular bands, a little within the 
edge ; united together behind and extended into a compressed, rather 
slender, elongated siphon, grooved along the centre of each side and 
ending with two apertures; the retractor muscles of the siphons an- 
gular; the foot (in spirits) rhombic, very much compressed, inferior, 
subcentral, the lower angle rather produced in front; the lips equal, 
very long, slender, triangular, more than half the length of the foot ; 
the gills large, oblong, elongate, equal. 
The crenated margins of the valves of the shell are covered with 
the inflexed edge of the hard periostraca; the siphonal inflection is 
angular. 
3. MonoGrara OF THE Genus ASGOsoMA, SERVILLE, WITH THE 
DESCRIPTION OF A NEW GENUS AND SPECIES ALLIED TO IT. 
By Apvam Wurtz, F.L.S. 
The genus Agosoma was formed by M. Serville for the reception 
of a longicorn beetle, first described by Scopoli under the name of 
Cerambyz scabricornis. In this genus the head is produced behind 
the eyes into a kind of neck, unlike its congeners, which have the 
head retracted into the thorax as far as the eyes. The prothorax is 
trapezoidal and contracted in front; the ovipositor of the female is 
long and prominent; the antenne in the males are rough, in the 
females smooth. 
The larva of the European species is found in the trunks of various 
kinds of trees ; the perfect insect, according to M. Mulsant, appears 
at Lyons in the month of July, and is active at night. M. Serville 
alludes to a second species, which he had seen in the collection of 
M. Dejean, where it bore the name 4g. affine ; in the following little 
monograph will be found descriptions of five new species, all con- 
tained in the collection of the British Museum. 
ARGOSOMA. 
4igosoma, Serv. Ann. Soc. Ent. Fr.i. 162.—Cerambyz, p. Scop. — 
Prionus, p. Fabr. 
1. AiGOSOMA SCABRICORNE. 
Cerambyz scabricornis, Scop. Ent. Carn. 54. 
Prionus scabricornis, Fabr. Syst. El. ii. 258; Oliv. Col. iv. t. 11. 
f. 42.9; Latr. R. A. v. p. 108. 
