NEMATOHELMINTHES. 
Verm. 7 
Linstow (49) recognizes fourteen modes of development among the 
Nematoids ; he more particularly describes that of Nernatoxys longicauda, 
which he compares with that of Polystomum integerrimum. Hallez (46) 
has investigated the earlier stages in the development of Ascaris megalo- 
cephala. Biitschii (40) points out the resemblances between the nervous 
system of the round and of some of the flat worms. 
Leuckart (47) and Schneider (53) have contributed to the life-history 
of Sphcerularta. 
Natural history and pathology of Anguillula stercoralis ; Golgi & 
Monti (45). Sur la reviviscence de l’anchylostome duodenal; Chatin, 
C.R. Soc. Biol. (8) ii. p. 503. Anchylostoma in Belgium (43). 
Genera and Species. 
De Man (42) describes as new:— 
Monohystera dintheriana (Netherlands), p. 2 ; 
Dorylaimus ettersbergensis , p. 13, onycephalus, p. 15 (Mid-Germany), D. 
zograffi , p. 24 (Russia). 
He has notes on, among others:— 
Mononchus tunbridgensis, Dorylaimus regius, D. intermedins , and D. 
longicaudatas , from the Netherlands. 
A list is giyen of the 38 species found near Weimar, among which 
are :— 
Cephalobus rigidus , Aphelenchus modestus , D. intermedins , D. leuckarti , 
and D. limnophilus. 
A list is given of 33 species collected near Moscow, among which are :— 
Monohystera paludicola , Cephalobus buetschlii , Dorylaimus attenuatus, 
and D. crassus. 
Agamonema campbelli, sp. n. (various fishes) ; Chatin (2), p. 4 ; 
Agamonematodum bombinatoris (Bombinator igneus ) ; Linstow (10), 
p. 245. 
Linstow (48) describes:—- 
Angiostomum macrostomum (on lungs of Angitis frag ills), A. entomelas, 
nigrovenosum, rubrovenosum , and sanguinolentum. 
Ankylostomum perniciosum, sp. n. (Felis tigris ) ; Linstow (16), p. 238. 
Ascaris thymalli (Thynuillus vulgaris ), A. lotce (L. vulgaris ), Linstow 
(16), p. 242 ; A. apterycis , p. 38, A. filholi (in fishes), spp. nn., p. 39, 
Chatin (2) ; A. affinis, sp. n. (Mustelus Icevis ), p. 217, Orley (21). 
Calodium convolutum , from Ossifraqa qiqantea ; Fourment, C.R. Soc. 
Biol. (8) ii. p. 703. 
Filaria obtusans , sp. n. (head of Pike), Prenant (26), p. 214 ; F. conoura 
(Anguilla vulgaris), p. 242, F. glomeruli's (G. limbata ), F. vesperuginis 
(F. serotinus ), p. 234, Linstow (16). 
Oxyuris limbata (Glomcris limbata), p. 246; 
Trichosoma filifor me (Triton alpestris and T. cri'status), p.247 : Linstow r 
(16). 
Sclerostoma struthionis, sp. n., Horst, N. Leyd. Mus. vii. pp. 263-268, 
pi. viii. (from intestine of Struthio molybdophanes). 
1885. [vol. xxn.] e 2 
