642 CLASS X. 
A. E. Grusr, Bemerkungen tiber die Phyllopoden, nebst eine Uebersicht 
ihrer Gattungen und Arten. Mit 4 Kupfertafeln. Berlin, 1853, 8vo. 
Lievin, Die Branchiopoden der Danziger Gegend. Mit x1 Tafeln in 
Steindruck. Danzig, 1848, 4to. 
Branchipus SCH&FFER (in part), Larr., (Branchiopoda Latr. 
previously, Lam.). Abdomen caudiform, long, composed of from 
six to nine segments, bilobed at the apex, or terminated by two 
pinne. Antenne four, the superior filiform or setaceous, the 
inferior incurved, resembling horns, directed downwards. 
Sp. Branchipus stagnalis, Cancer stagnalis L., J. C. ScomFFER Der fisch- 
formige Kiefenfuss, m. emer color. Kupferpl. Regensburg, 1754, 4to. Ejusd. 
Elem. entomol. Tab. 29, figs. 6, 7, Eneycl. méth. Crustac. Pl. 336, figs. 4—16, 
—Branchipus paludosus Latr., Chirocephalus diaphanus PRévost, Dxs- 
MAR. Crust. Pl. 56, figs. 2—5, Guerin Jconogr., Crust. Pl. 33, fig. 3. 
These animals resemble in some degree the larva of the common ephemera, 
so that Linnaus himself was in doubt whether Cancer stagnalis was not 
such a larva. They live in stagnant fresh water, and in pools formed by 
summer-showers in roads. The young animals do not at first resemble the 
old ones, have a short oval body, and besides the antennz, two pairs of 
jointed appendages, of which the first pair consists of two long and strongly 
developed rowing feet, curved, bent backward, and beset with many hairs ; 
these parts afterwards change into the posterior antennz or horns of the 
head ; the abdomen lengthens, and only after repeated moultings acquires 
feet, which at first are less numerous because the posterior appear later than 
the anterior. 
Artemia Lracu, Artemisus Lam. 
Sp. Artemia salina, Cancer salinus L., Racker Trans. of the Linn. Society, 
xI. Tab. xiv. figs. 8—1o; N. Jony Histoire d'un petit crustacé, Artemia 
salina LEACH, &c. Montpelier, 1840, 4to. This little animal lives in fresh 
water at Lymington, Montpelier, &c. ; it was named by the English author 
Brineworm, and is almost 4 inch long.—Branchipus Mulhausent FISCHER, 
Artemia salina RatHKr, Fauna der Krym, Mém. des Sav. étrangers pre- 
sentés & VAcad. imp. des Sc. de St. Petersbowrg, 111. 1837, VI. figs. 14—21; 
in a salt-water lake of the Crimea, and probably also in Siberia. 
Eulimene Latr. Abdomen short, almost semi-globose. 
Compare LaTREILLE in Cuv. R. Ani. Ul. p. 168, 2e édit. Iv. p. 178. 
Family XIII. <Aspidephora. Body either covered by a clypei- 
form or inclosed in a bivalve shell. 
A. yes petiolate. 
Nebalia Leacu. Shell compressed, plicated at the back, descend- 
ing by the sides of the body, covering head, thorax and part of 
