10 Echin. 
V. Echinoderma, 
[1922J 
184. — Yakovlev, N. N. Some new 
data on Cryptocrinus and the connec- 
tion between the Crinoidea and Cys- 
toidea. Ann. Soc. Paleont. Russie 
2 1918 pp. 7-26 [Russian and English 
summary], 
185. — Yakowlev,' N. tlber den 
Commensalismus der paliiozoischen Gas- 
tropoden der Gattung Platyceras mit 
den Crinoiden. Zool. Anz. Leipzig 54 
1922 pp. 291-294. 
186. — Zirpolo, G, Richerche sulla 
rigenerazione delle braccia di Asterina 
gibbosa. Penn. Publ. Staz. Zool. Napoli 
3 1921 pp. 93-163. 
II.— SUBJECT INDEX. 
N.B. — The number in Clarendon Type 
quoted after the author's name , in the 
Subject and Systematic Indices , refers 
to “ Titles ,” where a fuller reference 
will be found. 
GENERAL. 
Historical. — Fossa-MaNcini, 69. 
General Treatises and Monographs. — 
Clark, 33 & 34 ; Dacque, 42 ; Jack- 
son, 96 ; Nutting, 143. 
Biography. — Batailler, 6; Girar- 
dot, 78 ; Queron, 154. 
Bibliography. — Bataller, 6 ; Zir- 
polo, 186. 
Pedagogy. — Bowen, 17. 
Museums. — Girardot, 78, 
Technique. — Devanesen, 51. 
Nomenclature. — Fisher, 66. 
STRUCTURE. 
General Accounts. — Checchia-Risfoli 
26; Clark, 37 ; Ehrenberg, 58. 
Symmetries. — Kjersoiiow-Agersborg 
105. 
Homologies of classes. — Bather, 7. 
Skeletal tissue or Stereom. — Ehren- 
berg, 56 ; Merker, 132. 
Skeletal Anatomy. — Devanesen, 51 ; 
Ehrenberg, 56, 57, 58 ; Fossa- 
Manoini, 68; Yakovlev, 184. 
PHYSIOLOGY. 
Circulation. — Fulton", 72; Van her 
IIeyde, 175. 
Respiration. — Gjaja, 80 ; Kjer- 
schow-Agersborg, 105 ; Van der 
Heyde, 175. 
Alimentation. — Kindred, 104. 
Excretion and Secretion. — Iyilborn 
and Maoleod, 102 ; Kindred, 104. 
Environmental Effects. — Fredericq, 
70. 
Experimental. — Dalcq, 46; Kindred, 
104; Van der, Heyde, 175. 
DEVELOPMENT. 
General accounts. — Mortensen, 137. 
Formation of gonads. — Cerruti, 24; 
Elmiiirst, 59. 
Oviposition, Fertilisation, Segmenta- 
tion. — Baldwin, 4; Brachet, 18; 
Cerruti, 24; Chambers, 25; Dalcq, 
46 ; Drz, 55 ; Giglio-Tos, 76 ; Glaser, 
81 ; Gray, 85 & 86 ; Heilbrunn, 90 ; 
Hibbard, 91 ; Just, 99, 100 & 101 ; 
Landauer, 119; Lillie, 125; Lillie 
and Baskervill, 126; Newman, 140; 
Ohshima, 144 ; Richards, 156 ; Samp- 
son, 160; Shearer, 164 & 165; Van 
Herwerden, 176 ; Vles, 179. 
Larval Stages. — Huxley, 95; Just, 
99 ; LaNdauer, 119 ; MacBride, 127 ; 
Mortensen, 135 ; Newman, 140 ; 
Ohshima, 145 & 146 ; Pelseneer, 152. 
Organogeny. — Devanesen, 51. 
Ontogeny. — Garstang, 74. 
Post-larval growth-stages. — Bather, 
9 ; Elmiiirst, 59 ; Mortensen, 136. 
Experimental Embryology. — Baldwin, 
4; Chambers, 25; Glaser, 81, 82 
& 83 ; Gray, 85 & 86 ; Hibbard, 91 ; 
Heilbrunn, 90; Huxley, 95; Just, 
99, 100 & 101; Landauer, 119; Lillie, 
125; Lillie and Baskervill, 126; 
Newman, 140; Ohshima, 144 & 145; 
Richards, 156 ; Shearer, 165; Sprin- 
ger, 169 ; Van Herwerden, 178 ; Vles, 
179; Woodward, 183. 
