OLiGOCHiETA, hirudinea. Verm. 39 
Mesenchytrceus parvus , anatomy, Ditlevsen, Zeitschr. wiss. Zool. lxxvii, 
p. 440, figg. 46-48, n. sp. 
Microscolex elegans , distribution of sense organs, Bovard, Univ. Calif. 
publ. Zool. i, pp. 269-286, pi. xxiv-xxv. 
Monopylephorus trichochcetus , M. parvus , p. 427, figg. 21-26, anatomy, 
Ditlevsen, Zeitschr. wiss. Zool. lxxvii, n. spp. 
Nais eliguis , Weigelt, Mem. Cour. Ac. Belgique lxiv, p. 516, fig. 82. 
Nematogenia josephina, Costa Rica, Cognetti, Boll. Mus. Torino, No. 478, 
p. 3, n. sp. 
Notiodrilus georgianus var. n. Icevis, Buenos Ayres, Rosa, Atti Soc. 
Modena (4) iv, 35, p. 9. 
N. silvestrii , Rio Santa Cruz, anatomy, Rosa, t. c. p. 7, n. sp. 
Ocnerodrilus ( Ilyogenia ) simplex , Costa Rica, Cognetti, Boll. Mus. Torino, 
No. 478, p. 3, n. sp. 
Pachydrilus claparedeanus, anatomy, Ditlevsen, Zeitschr. wiss. Zool. 
lxxvii, p. 431, fig. 28, n. sp. 
Perionyx ceylanensis , Ceylon, detailed anatomy, Michaelsen, SB. Bohmisch. 
Ges. 1903, xl, pp. 6-11, 2 figg, n. sp. 
Plutellus uzeli , Peradeniya, Ceylon, in JVotoscolex, Michaelsen, t. c. p. 4, 
3 fig., n. sp. 
Psammoryctes illustris , P. fossor , pp. 416-419, fig. 15-20, Ditlevsen, 
Zeitschr. wiss. Zool. lxxvii, n. spp. 
Stylaria lacustris, regulation, Harper, Biol. Bull, vi, pp. 173-190, 16 figg. 
Tnamnodrilus benhami , p. 6, T. ophioides , p. 6, T. nemoralis , p. 7, T. 
micrurus , p. 8, T. beddardi , p. 8, T. tuberculata , p. 9, T. magnus , 
p. 10, T. acanthinurus , p. 10, T. agricola , p. 11, T. validus , p. 12, 
T. grais , p. 12, T. tutus , p. 13, T. ngeophilus , p. 13, T 7 . euzonus , p. 14, 
T 7 . agilis, p. 14, Ecuador, Cognetti, Boll. Mus. Torino xix, No. 474, 
n. spp. 
Trichodrilo’ides n. gen. for T. intermedins n. sp., Orne, Fauvel, C.R. Ass. 
Franc, xxxii 1, p. 221. 
Trinepkrus krcepelini , Central Ceylon, anatomy, Michaelsen, Mt. Mus. 
Hamburg xxi, p. 128, 1 fig., n. sp. 
Tubificidce parasitised by Actinomyxidce , Caullery & Mesnil, C.R. Soc. 
Biol, lvi, pp. 408-410 ; Tubtfex , parasites of, Linger, C.R. Soc. Biol, 
lvi, pp. 844-846, 4 figg. ; Tubifex , Marschall Island, Schnee, Zool. 
Jahrb. Syst. xx, pp. 387-412; T. tubifex , parasitised, L^ger, C.R. 
Soc. Biol, lvi, pp. 846-848. 
T. marinus , p. 421, fig. 9 & 10, Ditlevsen, Zeitschr. wiss. Zool. lxxvii, 
n. sp. 
HIRUDINEA. 
[The following memoirs relate to Hirudinea : — Apathy (11), Arnesen 
(13), Azoulay (16), Billet (25), Brumpt (55), Fage (134), Hemingway 
(191), Holmgren (201), Kershaw (230), Livanow (270), Nobre (333, 334), 
Pisrez & Gendre (348, 349), Scharff (396), Schuberg (407), Schuberg 
& Schroder (406), Scriban (414), Spiess (434, 435), Yakhontov (478).] 
General Biology. 
Morphology, Livanow (270). 
Anatomy and histology of the digestive organs of Aulostoma , Spiess 
( 434 ). 
Histology of digestive epithelium in Heemopis sanguisuga , Spiess (435). 
Muscle fibres of Branchellion, P^rez & Gendre (349). 
