330 
BRITISH ENTOMOSTRACA. 
Head small, and situated at the end of a long and slender 
neck. It is rounded at the anterior extremity, and a 
little below the antennae exhibits on each side a round 
lobe or tubercle. The antennae and foot-jaws are very 
small. The neck nearly equals in length the rest of the 
body. The thorax is broad, and of a somewhat quadran- 
gular shape, with a deep indentation on each side about 
the middle of its length. On the upper half we see two 
pairs of prolongations or appendages, each divided into 
three digitations ; and on the lower half there are three 
smaller appendages, but simple, not digitated. The pos- 
terior angles of the thorax are prolonged also into short 
horns or appendages, which are also simple. The abdo- 
men is in form of a short tubercle, with a rounded blunt 
point. The oviferous sacs are of about the length of the 
whole animal, of considerable size, and cylindrical. 
The male is similar, according to M. Edwards, to that 
of Chondr acanthus (Lernentoma) cornutus. 
Hab . — It is found attached to the branchiae of the 
Triglce. Ealmouth, J. Crouch, Esq. British Museum. 
3. Lernentoma Lophii. Tab. XXXV, fig. 3. 
Chondeacanthus Lophii, Johnston , , London’s Mag. Nat. Hist., ix, 
81, 82, f. 1 Qa-c, 1836. 
— Rathke ,* Nov. Act. Nat. Cur., xx, 116, t. 5, 
f. 11-18, 1843. 
Chondbacanthus gibbosus, Kroyer , Tidsskrift, i, 252, t. 2, f. 4. 
Chondeacanthus Delaeochiana {pars), M. Edwards , Hist. Nat. 
Crust., iii. 
Character . — Femate. Body rather elongate, and some- 
what gibbous. Head small, having on each side a small 
horn-shaped appendage directed a little obliquely back- 
wards. Antennae small, conical, and slightly curved. 
Thorax divided into four portions by as many contractions. 
* Rathke has described the same species under the same name as Dr. 
Johnston has applied to it, but evidently without knowing that the name 
had already been used. 
