ANATOMY AND EMBRYOLOGY. 
Crust, 5 
brane of the intestine into the blood. Rend. Acc. Nap. xvi. pp. 95-99, 
with a plate. 
Peculiar glands secreting a cement-like matter, by which the eggs 
are fixed to the abdominal feet, in Astacus and Pagurus, have been 
described by M. Braun ; Arb. Inst, Wiirzb. iii. [1876] pp. 472-479, 
pi. xxi. He describes the salivary and cementary glands and their 
orifices, either in the oesophagus, labrum, or maxilla) of the former, in 
the post-abdomen itself or the post-abdominal feet of the latter, in 14 
species of European Decapods and Stomapods, and gives a comparison of 
these two sorts of glands. 
The structure of the compound eyes of some Crustacea is described by 
Prof. II. OuRNAcnEii in a paper on the eye of iho A rlkropothty published 
as an appendix to “ Klinische Monatsbliitter fur Augenheitkunde,’’ xv. 
May, 1877, p. 42, &c., with woodcuts. The crystalline cones are composed 
of four segments iii the Decajjoda, as in the Insecta, but in many Amphi- 
pods. Isopods, and Schizopods, only of two ; in the Daphnidoi and 
Estheria, even of five segments. The “ facettes ” of the IP/peridcc are 
plain, not vaulted. In Limulus alone, the crystalline cones are not deve- 
loped (“a-cone ’’ eyes, the others “ eu-cone”). 
J. CiiATiN gives some notes on the eyes of the Crustacea, He regards 
the crystalline cone and the optic rod (batonnet) as two parts of one 
essentially homogeneous, light-refracting body, and points out distinct 
peculiar colours in the eyes of some Crustacea. Ann. Sci. Nat. (6) v. 
Zool. No. 9, 45 pp. 
Several observations on the anatomy of the Amphipoda^ chiefly the 
heart, the aorta, and the direction of the circulating fluid, also on the 
ganglionous cells and the termination of the nerves in the bristles of the 
maxillae and palps, which are probably organs of tasting and hearing, by 
A. W. Wrzesniowski, at the meeting of Russian naturalists at Warsaw, 
Sept., 1876 ; Z. wiss. Zool. xxviii. pp. 403 & 404. 
The male sexual organs and the structure and development of the 
spermatozoids in Pagurus prideauxi described by A. Zincone, supi'd, p. 4 ; 
no movement of the spermatozoids was observed. 
The sexual organs of Squilla mantis (L.) are described by 0. Grobben, 
SB. Ak. Wien, Ixxiv. pp. 389-406, with a plate. 
J. Bullar makes the rather strange observation that in Cgmothoa, 
Nerocila^ and Aniloci'a, the sexes are not really, but only temporarily 
separate. In the first stage, they have the external appearance of males 
and a double penis with distinct orifice, and the internal male sexual 
organs filled with spermatozoids ; but the same individuals contain also 
an ovary with an oviduct, which terminates in the sixth segment of the 
thorax, without external orifice. At the next moulting, the penis is lost, 
and neither the male nor the female sexual organs have an external 
orifice. At the third stage, they have a female orifice and produce eggs, 
and the male organs are reduced. J. Auat. Phys. xi. [1876] pp. 118-123, 
pi. iv. 
H. N. Moseley remarks that possibly this may be an error, occasioned 
by spermatophores having been observed within the female, and taken 
for -male organs; Ann. N. H. (4) xix. p. 89. Bullar refutes this sup- 
