12 Verm . vermes. 
in other points it has affinities to the Polychceta. Its exact systematic 
cannot as yet be fixed. See also Biol. Centralbl. iii. pp. 14-20, and P. 
Fraisse, tom. cit. pp. 617-627. 
• G. Pruvot (73) discusses the characters of the nervous system of 
Annelids, and proposes to divide the Phyllodoceidai into two groups, one 
with five, and one with four autennce. Ho founds a new geuus, 
Hothis, remarkable for having no dorsal cirrus on the third segment. 
H. A. Robin (Bull. Soc. Philom. 1882, 7 pp.), has some notes on Piono - 
sy llis pul tiger a and Grubea limbata ; the young have ciliated pits, which 
are regarded as analogous to those of the Nemertinea , but they do not 
seem to be possessed by the adult. 
Biilow (58) failed to find any zone of gemmation in Lumbriculus varie- 
gatus ; a worm was cut into fourteen pieces, thirteen of which grew up 
into complete individuals. 
Bourne (54) finds that the coelom of Leeches is a schizocoele ; in some 
cases, it becomes more or less completely filled up by the growth of con- 
nective tisssue ; this process may be distinguished as that of diacoelosis, 
or scattering of the coelom. When new spaces are developed, we have 
pseudocoelosis, and the primary and secondary coelom may exist side by 
side. 
“Annelid Messmates with a Coral” ; J. W. Fewkes, Am. Nat. xvii. 
pp. 595-597. 
Methods of studying Annelida ; W. A. Haswell, N. Z. J. Sci. i. 
pp. '305-307. 
Trouessart’s note on the tubuliform castings of Earthworms in France 
(C. R. 1882) is translated in Ann. N. H. (5) xi. pp. 666 & 667. 
Saint-Loup (76) detected in all the Hirudinea which he examined, the 
unpaired nerve originally described by Brandt in Hirudo. 
Carlet (59-62) has entered in detail into the manner by which the 
Leech effects its bite. 
For a general account of the Leech, and of the Hirudinea, see ‘Leech,’ 
Encycl. Brit. (9) xiv. pp. 450-455. 
Schneider (Zool. Beitr. 1, i. p. 62) finds carbonate of calcium in the 
teeth of Leeches (as Ley dig did before him). 
Schultze (78) finds an ascending series of complications in the branch- 
ing and mode of coiling of the segmental tubes of A ulostomum and 
Hirudo , as compared with Clepsine and Nephelis. The absence of ciliated 
infundibula in certain forms is to be regarded as due to degeneration. 
O. Grimm, “Fishing and Hunting on Russian Waters,” Int. Fish. 
Exh. [London : 1883 (St. Petersburg)], has some notes on the Leeches of 
Russia (p. 53). 
Genera and Species. 
Haswell (67) describes— 
Aphrodita australis , Baird, A. terrce-regince , sp. n. 
Hermione brachyceras , H. macleari , H. ( Aphrogenia ) dolichoceras , 
spp. nn. 
Triceratia , g. n. “Similar to Hermione , but with three tentacles on 
