642 CLASS x. 



A. E. GRUBE, Bemerkungen uber die Phyllopodcn, nebst cine Uebcrsicht 

 ihrer Oattungen und Arten. Hit 4 Kupfertafdn. Berlin, 1853, 8vo. 



LIEVIN, Die Branchiopoden der Danziger Gegend. Hit xi Tafcln in 

 SleindrucJc. Danzig, 1848, 4to. 



Branch ipus ScH^EFFER (in part), LATE., (Branchiopoda LATR. 

 previously, LAM.). Abdomen caudiform, long, composed of from 

 six to nine segments, bilobed at the apex, or terminated by two 

 pinnae. Antennae four, the superior filiform or setaceous, the 

 inferior incurved, resembling horns, directed downwards. 



Sp. Branchipus stagnalis, Cancer stagnalis L., J. C. SCHJEFFER Der fisch- 

 fbrmige Kiefenfuss, m. einer color. Kupferpl. Regensburg, 1754, 4to. Ejusd. 

 Elem. entomol. Tab. 29, figs. 6, 7, Encycl. meth. Crustac. PI. 336, figs. 4 16, 

 Branchipus paludosus LATR., Chiroceplialus diaphanus PRKVOST, DES- 

 MAR. Crust. PI. 56, figs. 2 5, GU^RIN Iconogr., Crust. PI. 33, fig. 3. 

 These animals resemble in some degree the larva of the common ephemera, 

 so that LINNJEUS 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 antennas, 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 antennae or horns of the 

 head ; the abdomen lengthens, and only after repeated moultmgs acquires 

 feet, which at first are less numerous because the posterior appear later than 

 the anterior. 



Artemia LEACH, Artemisus LAM. 



Sp. Artemia salina, Cancer salinus L., RACKET Trans, of the Linn. Society, 

 xi. Tab. xiv. figs. 8 10 ; N. JOLY Histoire d'un petit crustace, 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 J inch long. Branchipus Mulhauseni FISCHER, 

 Artemia salina RATHKE, Fauna der Krym, Mem. des Sav. etrangers pre- 

 sentes a VAcad. imp. des Sc. de St. Petersbourg, m. 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. in. p. 168, 2e e"dit. iv. p. 178. 



Family XIII. Aspidephora. Body either covered by a clypei- 

 form or inclosed in a bivalve shell. 



A. Eyes petiolate. 



Nebalia LEACH. Shell compressed, plicated at the back, descend- 

 ing by the sides of the body, covering head, thorax and part of 



