PLATYHELMINTHES. 
Verm . 5 
the Anopla, the nervous system lies between a basilar layer of connective 
tissue, and the circular muscles ; iu the Enopla, it is on the deeper (inner) 
side of the latter. 
Hubrecht (9) finds in Carinella (which he looks upon as the most 
primitive of the Paloionemertini) a layer of nerve-fibres external to the 
supporting lamella, and forming a plexiform envelopment for the whole 
body. In the Schizonemertini, this layer lies between the circular and 
the outer longitudinal layers of muscles. It was not found in the 
Hoplonemertini. 
Genera and Species. 
Linstow describes as new (19) : — 
Distomum semijlavum (intestine of Petromyzon fluviatile), p. 50 ; D. 
spinosum (intestine of Sylvia rufa)^ p. 51 : D. moleculurn (intestine of 
Rallus pygmceus)^ p. 51. 
TcBtiia scalaris, T. uncinata, and T. tiara were all found in Crocidura 
aranea ; T. uncinata also in C. leucodon. 
Urocystis prolifer, Villot (33). 
Tcenia barroissi, sp. n., Moniez, Bull. Sci. Nord, (2) iii. p. 448 (from the 
mole). 
Tcenia cyclocephala, sp. n. (intestine of Cona madagascariensis), Chatin, 
Bull. Soc. Philom. (7) iv. p. 31. 
Note on the vessels of Ahothrium gadi ; Moniez, Z. c. 
Weyenbergh, Period. Zool. Argent, iii. [1878], pp. 31-39, gives a full 
description of Distoma pulcherrimum, which he had (oj:). cit. ii. [1876] 
pp. 167-169) referred to Amphistoma. 
Cercaria incistidata, sp. n. (a tailless Cercaria from the liver of the 
esculent Frog) ; Perroncito, Veter, liii. pp. 454-457. 
Hubrecht (8) describes as new, Carinella inexpectata and Cerehratulus 
eisigi. The former species has more the external appearance of Polia 
than of Carinella, but agrees with other species of the latter genus in 
internal characters. 
Langerhans (55) found 18 Nemertina at Madeira, of which the follow- 
ing are new species; — 
Cerehratulus macintoshi, C. Tiuhrechti ; and Tetrastemma quadristriatum. 
Amphiporus virescens, A. cruentatus ; Linens dubius, L. pallidus ; 
Micrura ornata, M. albicla, spp. nn., Yerrill, P. U. S. Nat. Mus. ii. 
pp. 183-186. 
Perejaslawzew (Zool. Anz. iii. p. 186) reports on the Turbellaria Rhab- 
doccela from the Black Sea, 25 new species observed, but names not given 
in the report. Darwinia, g. n. The genus Orcus (Uliauin) = Trigono- 
stomum, 0. Schmidt. 
The observations of Grassi, and of Grassi and Parona (published by 
the Laboratory of Pavia, in 1880) have not been seen by the Recorder. 
