CRUSTACEA. 
311 
Tills communication forms part of the reports on deep-seai 
dredging off the coasts of Northumberland and Durham in 
connexion with the British Association. 
Sars, G. O. Om den aberrante Krehsdyrgruppe Cumacea og, 
dens nordiske Arter. Forhandl. Vid. Selsk. 1864, pp. 83* 
This memoir treats first of the intimate structure of the animals 
in the family DiastyUddBf and then describes twenty-five species 
belonging to nine genera taken on the coast of Norway. 
ScHODLER, J. E. Zur Diagnose einiger Daphniden. Arch, fiir 
Naturgesch. 1865, xxxi. pp. 283-285. 
SouBEiRAN, L. Sur FHistoire Naturelle et FEducation des 
Ecrevisses. Compt. Rend. 1865, lx. pp. 1249-1250. 
This memoir is a communication showing the favourably 
results in an attempt to cultivate the Ecrevisse [Astacus fluvia- 
at Clairfontaine, near Rambouillet, since the year 1859. 
These Crustacea take four years to reach maturity, the males 
growing more rapidly and attaining a larger size than the 
females. The author also adds a few remarks on the best 
means of feeding aiicl nourishing these animals during the 
period of their acclimatization ‘ 
Thorell, T. Om Argulus dactylopteri, en ny Vestindisk hafs- 
argulid. CEfverAVct. Akad. Eorh. 1864, xxi. pp. 609-614, 
pi. 16. 
The author gives a very full descriptive and structural ac- 
count of this species. j 
Wagner, N. Recherches sur le Systeme Circulatoire et les 
Organes de la Respiration chez le Porcellion elargi. Ann. 
Sc. Nat. 1865, iv. pp. 317-328. 
This communication demonstrates the circulatory system; 
and in it the author contends that a pulmonary plexus of mi- 
nute vessels exists in the opercular valves. 
Young, J. On the Malacostraca of Aristotle. Anil. & Mag. 
of Nat. Hist. 1865, xv. pp. 241-261; . 
Dr. Young has (Ann. & Mag. Nat. Hist., April 1865) col- 
lected from the three works of Aristotle, viz. ' Historia Ani- 
malium,^ ' De Partibus,^ and ^ De Generatione,^ all the notes oh 
the anatomy and physiology of the Malacostraca, and attempted 
to identify the Crustacea therein spoken of with those known to 
us by their modern names. 
The number of determinations considered doubtful by Dr. 
Young might be lessened if we accept Herbstia condyliata, which 
differs in general appearance from Maia squinado only in having 
