1885.| _ - Leblogy. 72t 
Eugyra; while the others belong to the genera Microcosmus 
and Cynthia. 
Echinoderms.—The stalked crinoids collected by the Challenger 
and reported upon by Dr, P. H. Carpenter, raise the total of ex- 
isting generic forms to six, with no less than thirty-two species. 
The bathymetrical range of the tribe is shown to extend from 100 
fathoms to 2500. No less than 150 species of unstalked crinoids 
were collected by the same expedition. In the discussion of the 
pee a relations between the neocrinoids and the palæo- 
r. Carpenter is, upon certain points, at issue with Mr. 
Wachsmuth, the highest authority on the latter group. Of the 
species of Pentacrinus from West Indian seas, P. asterias, the /szs 
asterias of Linnzus, is the rarest, while P. decorus is far more 
plentiful than P. mulleri. Neither of these, nor P. blakei, have 
been met with elsewhere. Two species from the Western Pacific, 
one from the North Atlantic, on the European side, another from 
the tropical Atlantic, and a single mutilated type from the Japan 
sea, complete the known Pentacrini. There is, in fact, but little 
difference between this genus and Comatula, the chief distinction 
themselves by their dorsal cirri; while the stalked Pentacrini are 
not seldom detached by the fracture of their skins just below a 
nodal joint, and they then cling to any suitable attachment by 
means of the cirri of that joint, which bend downwards like the 
dorsal cirri of Comatula. The five-chambered organ at the base 
of the calyx is much smaller in Pentacrinus than in Comatula, but 
each node of the crinoidal axis presents a dilatation similar to the 
five in Comatula. In the Eastern Archipelago Pentacrinus is re- 
placed by the allied Metacrinus, eleven species of which were 
dredged by the Challenger. 
strictly homologous with the Malpighian tubes of Tracheata. 
M. Y. Delage has discovered a nervous system in Peltogaster, 
which had before been believed to be without one. Eighteen 
months previously the same naturalist found a nervous system in 
Sacculina. 
Mammais.—According to F. W. True, in a communication to 
Science, the milk of Tursiops tursio is of the color and consistency 
