PLATYHELMINTIIES. 
Verm. 5 
The new species described by Wright (31) are: Distomum asperiim 
(p. 6, from Botauriis minor) ; D. reticulatum (p. 7, from Cemjle alcyon ) ; 
Polystomum ohlongum (p. 12, from Aromoche.lys \Sternothacrus] odoratus). 
Sphyranura (g. n.) osleri, p. 15, from Menohranclius lateralis ; 
allied to Polystomum^ but differing in general form, in the number of the 
suckers, and in the characters of the genital apparatus ; anteriorly there 
are two contractile bladders. 
Didymozoon Taschenberg, (27), g. n., on the gill-lamellse of Pelamys 
sarda ; the elongated worms have a distinct neck, but no suckers ; an 
intestine may or may not bo present. The species of the genus are : 
D. thynni, D. scombri^ D. pelamydis^ D. sphyrence, and D, auxis. Two 
worms were found in each cyst. 
Tristomum molce defined by Taschenberg, Z. ges. Natnrw. lii. p. 886 ; 
T. cephala is probably a synonym. 
Geoplana moseleyi and Rhyncliodemus (?) testaceus, Hutton, Tr. N. Z. 
Inst. xii. p. 277, New Zealand. 
Taschenberg divides the monogenetic Trematoda thus (26) : 
I. Fam. Tristomece. 
1. Subfam. Tristomidce^ Beued. 
2. Subfam. Monocotylidce^ Tasch. 
3. Subfam. Udonellidce, Bened. 
II. Fam. Polystomece. 
1. Subfam. Octohothriidce^ Tasch. 
2. Subfam. Polystomidm., Bened, 
3. Subfam. Microcotylidm, Tasch, 
4. Subfam. Gyrodactylidce, Bened< 
Hubrecht (7) describes as new Cephalotrix signata (p. 207), Polia curta 
(p. 209), P. minor (id.)^ Cerebratulus pantherinus (p. 212), C. dohrni 
(p. 216), C. gruhii (id.), C. tristis (p. 216), C. liepaticus (p. 217), Amphi- 
porus dubius (p. 222), A. marmoratiis (p. 223), A. p>ugnax (p. 224), Tetra- 
stemma diadema (p. 228), T. octo-pinictatum (p. 229), (Erstedia vittata 
(p. 229), 0. unicolor (p. 230), Nemertes marioni (p. 231). The characters 
of (Erstedia, Quatrefages, are emended, Langia^ g. n., representative of 
the Langiidoi^ “ the margins of the body are slightly frilled, atid lapped 
up over the back, which takes the aspect of a partly closed tube from the 
head to the tail ; ” for Langia formosa^ sp. n. 
Hubrecht (7) proposes to divide the order Nemertini into three sub- 
orders, with the following families : — 
I. — PaUeonemertini. 
Fam. Ceplialotrichidre. 
Fam, Garinellidaii 
Fam. Valenciniidce . 
Fam. Poliidcc. 
II, — Schizonemertini. 
Fam. Lineidce. 
Fam. Langiidce. 
