54 
BRITISH ENTOMOSTRACA. 
Cancer stagnalis (Linn.?), Shaw, Linn. Trans., i, 103, t. 9, f. 4, 5. 
Cancer paludosus (?), Muller , Zool. Dan., t. 48, f. 1-8. 
— . Herbst, Krabben, ii, 118, t. 35, f. 3-5. 
Branchipus stagnalis, M. Edwards, Cuv. Regne Anim., edit. 
Crochart, Crust., t. 74, f. 2. 
Ino piscina, SchranJc, Paun. Boic., iii, 249, 1803. 
Marteau d’eau douce, Duchesne, Manuel du Naturaliste. 
Remarkable aquatic insect, King , Phil. Trans., lvii, 72, t. 4, 1762. 
Squilla lacustris minima, Petiver, Gazoph. Nat., i, t. 21, f. 7, 1709. 
Description . — When full grown it is upwards of an 
inch in length, slender, of a cylindrical form, and nearly 
perfectly transparent. The male is more so than the 
female, but with a slight reddish tinge throughout. The 
tail is of a bright red ; the large basal joint of the 
prehensile antennae of a beautiful transparent bluish- 
green colour, tipped at the extremity, where the second 
joint arises with a fine red hue. The back of the female 
is of a blue colour, and the ovary, when full of ova, of a 
reddish-brown. 
Hab . — Pools on Blackheath, W. B. ; near Epping, 
E. Doubleday, Esq. ; near Brighton, C. Ager ; near Bristol 
and in Devonshire, Dr. Leach, Brit. Mus.; near Hammer- 
smith, J. O. Westwood, Esq. - 
2— Artemi a. 
Cancer, Linn tens, Rackett. 
Gammarus, Fabricius, Pennant , Herbst. 
Artemia, Leach, Desmarest, M. Edwards, Joly. 
Branchipus, Latreille. 
Artemisus, Lamarck. 
Artemis, Thompson. 
Character .' — Abdomen long, consisting of six divisions, 
shortly bilobed, and not divided into two caudal plates ; 
cephalic horns of male flat, broad, and not furnished with 
any appendages. 
