TITLES. 
Echin. 25 
220. [Masterman, A. T.] On the structure of Actinotrocha considered in 
relation to the suggested Chordate affinities of Phoronis. T. c. pp. 
129-136. (Oct. 1896.) [ii, A, ii : F, v, d.] 
221. . On the Diplochorda. 1. The Structure of Actinotrocha. 
2. The Structure of Cephalodiscus. Quart. J. Micr. Sci. (n. s.) xl, 
pp. 281-366, pis. xviii-xxvi. (Aug. 1897.) [n, A, ii : F, vi, a, 10.] 
Maury, M. Zool. Rec. 1891. Abstract in Meissner (227). 
222. Mayer, P. Allgemeine Biologie und Entwickelungslehre. Zool. 
Jahresber. for 1895 (1896). 
Gives Literature and Abstracts of many papers for which Echinoderms 
served as corpora vilia: viz. Boveri (15), Kostanecki (82a), Reinke 
(137a), Wilson (173, 174, 175), in Zool. Rec. 1895; and Driesch (72) & 
Ziegler (354) of the present Record. 
223. . Allgemeine Biologie und Entwickelungslehre. Zool. Jahresber. 
for 1896 (1897). 
As (222): abstracts R. Hertwig (128) this Record. 
224. Mayer-Eymar, 0. Revision der Formenreihe des Clypeaster altits. 
Vierteljahrschr. Ges. Zurich, xlii, pp. 43-53. (April 24, 1897.) [iv, C.] 
Also appears as : Revision du groupe Clypeaster altus (Extrait) ; Arch. 
Sci. Nat. iii, pp. 147-102 (Fob. 15, 1897), and Eolog. gool. Helvot. v, 
pp. 47-52 (April, 1897). Preliminary abstracts: Arch. Sci. Nat. ii, p. 267 
(Sept. 16, 1896); C.R. Soc. Helvot. 1896, pp. 114 & 115; and Act. Soc. 
Helvot. 1896, pp. 95 & 96. 
Review by J. Lambert, Rev. crit. Pal. i, p. 119 (July, 1897). 
225. Mazzetti, G. Catalogo degli Echinidi Fossili della Collezione 
Mazzetti esistente nella R. University di Modena. Mem. Acc. 
Modena, (2) xi, pp. 409-461, & 1 pi. (1896.) [n, E, i, c. hi, B, ii. 
iv, C.] 
226. Meek, A. A Biological Application of Rontgen Photography. 
Nature, liv, p. 8. (7 May, 1896.) [n, E, i, b. iv, 1).] 
227. Meissner, M. Bericht iiber die wissenschaftlichen Leistungen in 
der Naturgeschichte der Echinodermen wahrend des Jahres 1891. 
Arch. Naturg., Jalirg. 58, Bd. ii, Heft 3, pp. 115-150. (Dec. 1895.) 
Gives Literature of Recent Echinoderma for 1891 (some 1889, 1890); 
and Abstracts of : — M’Coy, Zool. Rec. 1890 ; Bell (1, 3, 5, 6, 7, 8), Brooks, 
Brunchorst, Camerano, Carpenter (2, 3, 4), Chadwick, Cu^not (1, 4, 
5), Demoor & Chapeaux, Driesch, Durham, Fewkes, Fiedler, Field, 
Fischer, Fol, Fowler, Hartlaub, Herdman, Hoyle, Ives (1, 2, 3), Kel- 
logg, Lacaze-Duthiers, Loeb, Loriol (2), Ludwig (1, 4, 5, 7), Maury, 
Mingazzini, Norman (1), Perrier (4), Pictet, Russo (4, 5, 6), Sladen (1), 
Walsh, Wood-Mason & Alcock, in Zool. Rec. 1891 ; Agassiz (1), BoveiIi 
(25), Ganong (91), Greenough (101), Guerne (110), Hartlaub (113), 
Heim (114), Marenzeller (165), Morgan (195), Schneider (237) in Zool. 
Rec. 193; Thurston (121) Zool. Rec. 1894; and Belzung (35), Bergendal 
(37), Dahl (62), Frenzel (90), Honeyman (131 & 132), Sauvage (289), 
& Villot (334) of present Record. 
228. . Die von Dr. Plate aus Chile heimgebrachten See-Igel. Arch. 
Naturg., Jahrg. 62, Bd. i, pp. 83-90. (Nov. 1896.) [ii, D, viii. iii, A, iv.] 
Abstract by H. Ludwig in Zool. Centrbl. iv, p. 288 (20 April, 1897). 
229. . Die von Hcrrn Dr. L. Plate aus Chile und Feuerland heimge- 
brachten See-Sterne. Arch. Naturg., Jahrg. 62, Bd. i, pp. 91-108, 
pi. vi. (Nov. 1896.) [ii, B, ii, c : E, iii. iii, A, iv. iv, D.] 
Abstract by H. Ludwig in Zool. Centrbl. iv, p. 288 (20 April, 1897). 
