PHY LLOPODA OS TEACODA . 
229 
centration of the salt-water, and into a form very near BrancTiipus by 
decreasing concentration. The only reliable difference, according to 
him, between Artemia and Branchipus is that the former exhibits 8 seg- 
ments without feet, the last nearly twice as long as the preceding, and 
Branchipus 9, the last corresponding to the last two of Artemia. Par- 
thenogenesis is known only in Artemia. A certain degree of concen- 
tration of the water favours the appearance of males and the fecunda- 
tion of the eggs in Artemia and in Daphnia magna (Leydig). Z. wiss. 
Zool. XXV. suppl. vol. pp. 103-116, pi. vi. 
Branchinectes coloradensu, sp. n., Packard, Rep. Peab. Ac. vi. [1874], 
p. 57, and Ann. Rep. U. S. Teri\ 1875, p. 621, pi. iv. fig. 12, Colorado. 
Streptocephalus texanus (Packard, 1871), id. 1. c. pi. iv. fig. 13. 
Artemia gracilis (Verr.), id. 1. c. p. 621, pi. iv. fig. 11. 
• 
LiMNADIIDiE. 
Limnadia agassizi, Bp. n.y id. Rep. Peab. Ac. vi. [1874] p. 54, and Ann. 
Rep. U. S. Terr. 1875, p. 618, pi. ii. fig. 5, Penikese Island, Buzzard Bay, 
Mass., U. S. A. ; L. dmericana (Morse), id. 1. c. pi. ii. fig. 4. > 
Estheria calif ornica, California, and clarhi^ Cincinnati, Ohio, and 
Kentucky, spp. nn., id. Rep. Peab. Ac. vi. [1874] pp. 55 & 56, and Ann. 
Rep. U. S Terr. 1875, pp. 618 & 619, pi. ii. fig. 6, and pi. iii. fig. 1. E. 
belfragii (Pack.) figured ; id. 1. c. pi. iii. fig. 2. 
Lymnetis\_Limn-'\ mucronatus\^-ta\ sp. n., id. Am. Nat. ix. p. -312, 
Montana. 
CLADOCERA. 
The so-called shell-gland in the Daphniidce has been re-examined by 
C. Claus, who has found that there is a minute excretory opening on 
the ventral side near the ampulla (detected by Dohrn), and that the body 
of the gland makes several convolutions, the ampulla being the opppsite 
blind end of it. Z. wiss. Zool. xxv. pp. 165-173, pi. xi. 
OSTRAOODA. 
. Cyprid^. 
Philomedes globosus (Lillj.), from the Spitsbergen Sea, and note on the 
generic difference of Cypridinatxom Philomedes^ by Lilljeborg, (Efv. Ak. 
Forh. xxxii. No. 4, pp. 3-5. 
CONCHCECIID^. 
Claus accurately defines this family, proposed by G. O. Sars, and dis- 
cusses its genera. The differential characters proposed by Dana for his 
genera Halocypris and Conchcecia are partly accidental and partly Sexual, 
but the genera can nevertheless be maintained, as follows : — 
ConchcRcia. (Dana) ; shell lengthened, laterally compressed, deeply 
notched in front ; anterior antennae in both sexes extended, in the male 
larger and provided with three long bristles and two bristle-bags ; second 
