4 Verm. 
VERMES. 
notice ; likewise the discussion of “ segmentation ’’and “ strobilization, ” 
&c. 
On the primordial phenomena of evolution in the egg of Nephelis^ 
Cucullanus, a.nd other Nematoids, several Rotatoria, &c., vide Butschlt, 
Abh. senck. Ges. x. pp. 215-238, pp. 24G-248, and 441 & 442. 
Contributions to the anatomy of the aquatic Oligochmta by Vejdow- 
SKY (11-13) ; Observations on the formation of the remarkable sperma- 
tophor of Psammoryctes (11). Special attention is given to the 
modifications of the sexual organs in this genus, in Rhynchelmis 
(12), and Phreatothrix (13). Rhynchelmis limosella becomes sexually 
mature in the middle of the winter. Horst (4) reviews the anatomy 
of Lumhricus from original researches ; the skin and muscular system, 
and the circulatory organs, take a prominent place in these investi- 
gations, 
A remarkably high development of the organs of vision in Alciopidce is 
described by Creep (2) ; a peculiar stress is laid upon the retina being 
probably formed of a single layer of “ optic cells,” whose different 
portions are differentiated as the bacillar, pigmentous, columnar and 
fibrillar layers of the retina. 
In the concluding remarks of his note on the embryology and 
evolution of Salmacina, Giard (1), points out the analogies and embryo- 
logical relations between the Annulata (and Rotatoria) and the MoUusca. 
A [Russian] paper by Rejewsky on Polygordius and the “Lovenian” 
larva (N. Mem. Mosc. x. 1873, 11 pp., pi. xiii.) is only known to the 
Recorder from Leuckart’s “ Jahresbericht ” (Arch. f. Nat. xxxix. pp. 
504-506. 
Genera and Species. 
McIntosh (7) reviews the British iiJw^/iroiymVZaj, Arnphinomidce, Aphro- 
ditidaiyPolynoidce,Acoetidce,\xnd.Sigalionidoi ; also (8) the species of the same 
families dredged during the “ Porcupine ” expeditions of 1869 & 1870. 
Descriptive notes, illustrations of characters of bristles, &c., remarks on 
synonymy, &c., are given for the greater number of recorded species ; 
the following are designated as new (some of them, however, having been 
named or shortly discussed in the author’s previous publications) : — 
JEuphrosyne lanceolata (8), p. 395, pi. Ixxi. fig. 1 (off Ireland, 173 
fathoms). 
Malmgrenia castanea (7), p. 376, pis. Ixvii. figs. 15-19, Ixviii. fig. 15 
(Shetland, Channel Islands, off S.W. Ireland, &c., 80-110 fathoms) ; 
andreapolis, 1. c. p. 327, pi. Ixxvii. figs. 20-23 (St. Andrews, &c.). 
Harmothoe sibbaldi, id. 1. c. p. 378, pi. Ixviii. figs. 1-3 (Shetland to Corn- 
wall) ; zetlandica, id. 1. c. p. 379, pis. Ixix. fig. 1, Ixviii. figs. 4 & 5 (Bressay 
Sound, 5 fathoms) ; macleodij id. 1. c. p. 382, pi. Ixix. figs. 2 & 3 (Shet- 
land, St. Andrews) ; antilopes, id. 1. c. p. 383, pi. Ixix. figs. 4-6 (Shetland, 
Hebrides) ; haliceti, id. 1. c. p. 384, pi. Ixix. figs. 7-10 (Minch) ; morphysoe, 
ibid. pis. Ixix. figs. 11-15, Ixx. fig. 18 (Guernsey, Polperro). 
Tiermadion assimile, id. 1. c. p. 387, pi. Ixx. figs. 4-6 (British, and off 
Spain). 
