624 
ZOOLOGICAL LlTEKATUiiE. 
Olapar^de describes the following new genuS; the, only species of which 
lives in tlie sea j this species is hermaphrodite. 
HemidasyS) gen. nov., Clapar^de, 1. o. p. 23, pi. 4. figs. 6-9. Of linear 
form, with cilia restricted to the anterior region of the ventral surface of the 
body. Body armed with a certain number of conical appendages situated on 
the ventral surface. II. agaso, sp. n., found in the Bay of Naples, fixing 
itself voluntarily on the body of Nereilepas cmulata, Belle Ohiaje, 
Chcetonotm longicmidatus^ ep.^n., Tatem, Quart. Journ. Micr. Sc. vol. xv. 
1867, p. 252, pi. 10. fig. 1, found at St. Leonards. 
The publication of Mecznikow’s paper on Apsilus hntiformis (vide ^ Zool. 
Record,’ 1866, pp. 577 & 578) reminded Claparede of a species of Rotifer 
likewise deprived of vibratile cilia. This species had been observed some 
years ago in the Seime, a little river of the Canton of Geneva, and was found 
creeping over the bodies of Trichodrili and other small Oligocheeta. He 
describes it as a new genus : — 
BalatrOf gen. nov., Claparede, 1 . c. p. 14, pi. 4. figs. 3, 4. Body vermiform, 
very contractile ; posterior extremity terminated by two lobes : — the one ven- 
tral, of a semilunar form, transverse ; the other dorsal, nearly cylindrical, 
acting as a foot. Mallei in the form of hooks. Neither vibratile organs nor 
eyes. B. calvus, sp. n. ; all the individuals observed were females. 
Davis (/. c.) describes two now species of tubiculous Rotifera, CEcistes in- 
termedius, p. 14, pi. 1. figs. 1, 2, 3, 4, and OE. longicornis, p. 14, pi. 1. figs. 5, 6, 
7, 8 ; both on aquatic plants in ponds near Leytonstone. 
ANNELIDA 
BY 
E. Perceval Wright, M.A., M.D., F.L.S. 
A. Separate Work. 
Malmgren, a. J. Annulata Polychaeta Spetsbergiae, Groelan- ' 
landiae, Islandiae et Scandinaviae hactenus cogriita. Cum 
xiv. tabulis. Helsingfors, 1867, pp. 127. 
This is one of the most valuable eatalogues of Annelids yet 
published. Two hundred and fifty- eight species are enume- 
rated. The synonymy of each species is given; several new 
genera and species are described (to which reference is more 
especially made in the special portion of the Kecord) . Eighty, 
five species are figured, several figures being devoted to each 
species ; and several of these are species more fully described, but 
not figured, in Malmgren's I^ordiska Ilafs-annulater (vide 
