TITLES. 
Verm. 17 
235. Retzius, G. Biologische Untersuchungen, iv. Stockholm : 1893, 
folio. 1. Das sensible NerveDsystem der Polychaten, pp. 1-JO, 
pis. i-iii. 
Richard. [See Guekne, J. de, & Richard.] 
206. Riches, T. H. A List of the Neraertines of Plymouth Sound. 
J. Mar. Biol. Ass. iii, pp. 1-29. 
33 species, 4 new. 
207. Rosa, D. Revisione dei Lumbricidi. Mem. Ac. Torino (2) xliii, 
pp. 399-476. 
With 2 plates showing diagrammatically the position of clitellum and 
genital tubercles in the different species of Allolobophora. 
208. -. Catalogo e distribuzione geografica dei Lumbricidi. Boll. 
Mus. Torino, viii, No. 151, 5 pp. 
List of species described in (207), with the more important synonyms 
in addition. 
209. . Yiaggio del E. Festa in Palestina, nel Libano e regioni 
vicine. ii. Lumbricidi. T. c. No. 160, 14 pp., 3 figs, in text. 
With an appeudix on the spermatophors of Lumbricids. 
210. Rosseter, T. B. On the Cysticercus of Tcenia microsoma , and a 
new Cysticercus from Cyclops agilis , Rosseter. J. Quekett Club, v, 
pp. 179-182, pi. x. 
The one is the other. 
211. Rousselet, C. F. On Floscularia pelagica , n. sp., and notes on 
several other Rotifers. J. R. Micr. Soc. August, 1893, pp. 444- 
449, pi. vii. 
212. . List of new Rotifers since 1889. T. c. pp. 450-458. 
213. — — . On a Method of Preserving Rotatoria. J. Quekett Club, v, 
pp. 205-209. 
214. Saint-Remy, G. Mat^riaux pour l’anatomie des Monocoty tides. 
Rev. biol. Nord France, v, pp. 45-52, 2 figg. in text. 
215. Sala, L. Experimentelle Untersuchungen fiber die Reifung und 
Befruchtung der Eier bei Ascaris megalocephala. SB. Ak. Berlin, 
viii, pp. 657-674, pi. iv, or MT. Ak. Berlin, 1893, pp. 393-410. 
216. Sangalli, G. Echinococchi , larve d 'CEstrus, grosse corna nell* 
uomo. Altri fatti, altre deduzioni. Rend. 1st. Lombardo, xxvi, 
pp. 641-650. 
Continuation of paper in vol. xxv, see Zool. Rec. for 1892, 
Vermes , p. 25. 
217. Schaeppi, Th. Das Chlorogogen von Ophelia radiaia. Jena. 
Zeitschr. xxviii (n. F. xxi), pp. 248-293, pis. xvi-xix. 
1893. [yol. xxi.] v 2 
