LERNENTOMA. 
329 
ing the abdomen, which is nearly quite rudimentary. Two 
pairs only of thoracic appendages are visible, occurring 
at the upper portion of the narrow part, each divided into 
two digitations, and situated at a short distance from each 
other. The oviferous sacs are of considerable size, cylin- 
drical, and about two thirds the length of the body. 
Length nearly three lines. 
Male. Somewhat pyriform in shape. Head very large, 
swollen. Thorax conical, divided into five segments, and 
terminated by a rudimentary abdomen, armed with two 
small hooks. Antennae slender, setaceous, projecting 
from the anterior extremity of the head, and underneath 
them a pair of hook-shaped foot-jaws. Mouth situated 
far back, and provided with mandibles ; and behind the 
mouth two other pairs of foot-jaws are visible. Following 
these we observe two pairs of setiferous tubercles repre- 
senting the feet. Length, a quarter of a line. 
Hob. — Female. On the branchiae of a sole, May 2d, 
1837 ; Ireland, W. Thompson, Esq. 
2. Lernentoma asellina. Tab. XXXV, fig. 4. 
Lekn^a asellina, Linnaus , Faun. Suec., 2101, 1761 ; Syst. Nat., 
edit. 12th, i, 1093, No. 4. 
Lernentoma asellina, Blainville , Journ. Phys., xcv, 441. 
Lernentoma trigla, Blainville ,* 1. c., xcv, 441, t. 26, f. 12 ; Diet. 
Sc. Nat., xxvi, 125. 
— Besmarest, Cons. gen. Crust., 349. 
Chondracanthus trigla, Nordmann , Mik. Beitr., ii, 116, t. 9, f. 1-4. 
— Burmeister, Nov. Act. Nat. Cur., xvii. 
— Guerin , Iconog. Begne An. Zoopli., t. 9,f . 8 . 
— Kroyer, Tidsskrift, ii, 135, t. 3, f, 3. 
— M. Edwards, Hist. Nat. Crust., iii, 502. 
Lern^ea cauda duplici tereti, Linnwus, Wastogota Besa, 171, t. 3, 
f. 4 a, b, 174>7. 
Lern^ea, Cuvier, Begne An., iii, t. 15, f. 4. 
Character. — Female . Body somewhat square -shaped. 
* Not Lerneomyzon trigla, as Kroyer erroneously quotes it (Tidsskrift, ii). 
