TITLES. 
Venn. 23 
392. Wheeler, W. M. The life-history of Dicyema. Zool. Anz. xxii, 
pp. 169-176, also Science ix, pp. 370 & 371. 
393. -. J. Beard on the sexual phases of Myzostoma. Zool. Anz. xxii, 
pp. 281-288. 
394. Whitelegge, T. & Hill, J. P. The Hydrozoa, Scyphozoa, Actinozoa, 
and Vermes of Funafuti. Mem. Austral. Mus. iii, Part. 7, March 1899, 
Vermes , pp. 392-394. 
395 . Whitman, C. 0. Apathy’s grief and consolation. Zool. Anz. xxii, 
pp. 196 & 197. [Cf. Apathy (7).] 
396. -. Animal behavior. Biol. Lectures, Wood’s Holl, 1898, Boston 
1899, pp. 285-338. 
Clepsine , &c. 
397. Willem, Y. Observations sur l’excretion chez l’Arenicole. Miscel¬ 
lanies biologiques. Trav. Stat. Zool. Wimereux vii, pp. 555-576, 
pis. 29 & 30, 3 text-ligg. 
398. - & Minne, A. Recherches sur la digestion et l’absorption in- 
testinale chez le Lombric. Livre jubilaire dedie a Ch. van Bambeke, 
pp. 201-222, 1 pi. and 2 text-figg. Brussels, 1899. 
399. Willey, A. Some points in the morphology of the Enteropneusta. 
P. Cambridge Soc. x, p. 37. 
400. -. Remarks on some recent work on the Protochorda, with a 
condensed account of some fresh observations on the Enteropneusta. 
Quart. J. Micr. Sci. xlii, pp. 223-244, 3 text-figg. 
401. -. Enteropneusta from the South Pacific, with notes on the West 
Indian species. Zool. Results (Willey), Part hi, pp. 223-334, 
pis. xxvi-xxxii and 7 text-figg. 
402. Wilson, E. B. The structure of protoplasm. Biological Lectures, 
Wood’s Holl, 1898, Boston 1899, pp. 1-20, 4 figg. 
Figures of eggs of Thalassema and Nereis. 
403. -. Cell-lineage and ancestral reminiscence. T. c. pp. 21-42, 
5 figg. 
403xV. - . On protoplasmic structure in the eggs of Echinoderms and 
some other animals. J. Morphol. xv, Supplement, Dec. 1899, pp. 1- 
28, pis. i & ii. Nereis and Thalassema , pi. ii. 
404. Wolffhugel, K. Rechtfertigung gegeniiber Cohn’s Publikation 
“Zur Systematik der Vogeltanien.” Centrbl. Bakter. xxvi, pp. 632- 
635. 
405. -. Beitrag zur Kenntnis der Anatomie einiger Vogelcestoden. 
Zool. Anz. xxii, pp. 217-223. 
406. Wollemann, A. Die Serpulaarten des Neokoms der Umgegend von 
Braunschweig. Jahresber. Yer. Braunschweig xi, pp. 264-270. 
407. Woodworth, W. M. Preliminary account of Planktonemertes agas- 
sizii , a new pelagic Nemertean. Bull. Mus. Harvard xxxv, No. 1, 
pp. 1-4, 1 pi. 
408. Yates, H. A few notes on marine worms. Tr. Manchester Micr. 
Soc. 1899, pp. 68-70, pis. 3 & 4. 
Does not contain new matter. 
409. Yung, E. Des variations quantitatives du plankton dans le lac 
Leman. C.R. Ac. Sci. cxxviii, pp. 1128-1130. 
