P0LYCHA5TA. 
Verm. 27 
The Trutta solar of the Baltic (Ostseelachs) has no special periods of 
feeding and fasting, but eats as much in the rivers into which it wanders 
as it does in the sea, and thus acquires freshwater parasites, which, in so 
far as they occur in closed-off organs, continue to live on the return of 
the fish to the sea. Finally, the Trutta solar of the Tay possesses fresh- 
water parasites below the pyloric appendages (e.g., Echinorhynchus proteus 
and Distomum tereticolle , &c.), thus confirming the conclusion to which 
Mclutosh had for other reasons arrived, that the Trutta solar of the Tay 
takes up food from time to time. The general result to be drawn from 
above facts is that Trutta solar has different habits of life in the 
different rivers into which it wanders. 
III.— THE GENERAL SUBJECT, 
f 
ARRANGED SYSTEMATICALLY ACCORDING TO ORDERS. 
General and Theoretical Papers. 
Braun (4). Davison. Frenzel (4). Haase. Kennel (1). 
Kingsley (2). Millson. Parona (1). Preyer. Roule. Sciiim- 
kewitsch. Son sin o (1). 
POLYCHHCTA. 
New Genus, and New Species and Varieties. 
Ammochares cedificator , Beaufort, N. C., Andrews, (4) p. 29G, n. sp. 
Aphrodita magellanica , Magellan Straits, Malard (2), n. sp. 
Axiothea mucosa , Beaufort, N. C., Andrews, (4) p. 294, n. sp. 
Branchiomma vesiculosum (Mont.), var. i, fuscum , n. var., var. ii, 
violaceum, n. var., Cette, Soulier, pp. 38 & 39. 
v Callizunel la, n. g., for Alciopa lepidota , Krohn ; Apstein (2). 
Diopatra magna, Beaufort, N. C., Andrews (3), p. 121, (4), p. 286, n. sp. 
Eunice ornata , Beaufort, N. C., id., (4) p. 284, n. sp. 
Harmothoe aculeata, Beaufort. N. C , id. (4) p. 278, n. sp. 
Loimia turgida, Beaufort, N. Q., id., (4) p. 298, n. sp. 
Ophelina agilis , Beaufort, N. 0., id., (4) p. 289, n. sp. 
Petaloproctus socialis, Beaufort, N. C., id. (4), p. 295, n. sp. 
Polydora commensalis , Beaufort, N. G., id. (6, 4), n. sp. 
Sabella pacifica, California, Fewkes, pp. 34-38, n. sp. 
Sabellaria californica , California, id. pp. 34-38, n. sp. 
Spio californica , California, id. pp. 34-38, n. sp. 
Vanadis fasciata, N. Pacific, Apstein (1) ; V. longicauda , Atlantic (?) 
latocirrata, Chili, V. (or Callizona ) fusca, Atlantic, id. (2) : n. spp. 
New Descriptions, Anatomy and Synonyms.- 
Annelida tubicola, Anatomy ; Soulier. 
( Aphrodita sericea), = A. aculeata ; Malard (2). 
