ARTEMI A. 
61 
in the water ; and in spring and summer these moultings 
are of very frequent occurrence, succeeding each other at 
intervals of five or six days. About fifteen days, or at 
most three weeks, after the eggs are formed in the ex- 
ternal ovary, they are expelled, and the mother lays three 
or four times, the number at each time varying from 160 
in summer to 50 only in autumn. As is the case with the 
Chirocephalus, the young present, when first born, a very 
different appearance from what they assume when full 
grown (t. II, f. 4). They bear an exact similitude to the 
young of the Chirocephalus, and the various changes 
they undergo are precisely the same as those which they 
experience. 
1. Artemia sauna. Tab. II, figs. 2-4. 
Artemia s alina, Leach, Diet. Sc. Nat., xiv, 524. 
— Desmarest , Cons. gen. Crust., 393. 
— Joly , Ann. Sc. Nat., 2d series, xii, 225, t. 7, 8. 
— M. Edwards, Hist. Nat. Crust., iii, 370. 
— Audouin et Payen , Ann. Sc. Nat., 2d series, Zool. 
vi, 219, and x, 315. 
— latreille , RegneAnim., iv, 174. 
Cancer salinus, Linnaeus, Syst. Nat., 10th edit., i, 634 ; 12th edit., 
i, 1056. 
— Gmelin , Syst. Nat., 13th edit., 2993. 
— Eackett, Trans. Linn. Soc., xi, 205, t. 14, f. 8-10. 
Gammares salines, Fabricius, Entomol. Syst., ii, 518. 
— Pennant, Brit. Zool., iv, 22, No. 35. 
— Herbst, Krabben und Krebse, i, 145. 
Artemises salines, Lamarck, Hist. An. s. Yert., 2d edit., v, 199. 
Artemis salines, Thompson, Zool. Research., No. 5, 104, t. 1, 
f. 1-10, t. 2. 
Branchipes salines, Latreille, Regne An., iii, 68, 1817. 
Brine-worm, Schlosser, Observ. period, sur la Physique par Gautier, 
pp. 58-60, i, f. a, b, 1756. 
Description . — Body linear; nearly half an inch in length. 
Cephalic horns in male large, flat, and two-jointed, the 
lower joint carrying a tooth on its inner edge, near the 
centre. Oviferous sac of nearly a quadrilateral form. 
