56 Verm. 
XV. VERMES. 
CHJETO GNA THA . 
The following memoirs relate to Chcetognatha : — Gunther (170), Hesse 
(186), Lohmann (249), Mayer (272), Redeke & Breemen (358), Schapiro 
(380), Stevens (408). 
Organs of light-perception in Spadella and Sagitta , Hesse (186). 
Ovogenesis and spermatogenesis of Sagitta bipunctatay Stevens (408). 
Occurrence of Sagitta etc., Lohmann (249). 
North Sea, plankton, Redeke & Breemen (358). 
North Atlantic, distribution of species in November, Gunther (170). 
Bahamas as a station for research in marine zoology, Mayer (272). 
Systematic. 
Sagitta } occurrence, Lohmann, Wiss. Meeresuntersuch. vii, pp. 1-88, 
pis. i-iv; S. whartoni, S. bipunctatay North Atlantic, November, 
Gunther, Ann. Nat. Hist. (7) xii, pp. 334-337 ; S. spp., North Sea, 
plankton, Redeke & Breemen, Tijdschr. Nederland. Dierk. Yer. (2) 
viii, p. 127 ; S.y organs of light-perception, Hesse, Zeitschr. wiss. Zool. 
lxxii, pp. 565-656, pi. xxxv. 
S. bipunctatay ovogenesis and spermatogenesis, Stevens, Zool. Jahrb. Anat. 
xviii, pp. 227-240, pis. xx & xxi. 
Spadella sp., North Sea, Redeke & Breemen, Tijdschr. Nederland. Dierk. 
Yer. (2) viii, p. 127 ; S. hamatdy North Atlantic in November, 
Gunther, Ann. Nat. Hist. (7) xii, pp. 334-337 ; S. hexapterdy S. 
bipunctatay organs of light-perception, Hesse, Zeitschr. wiss. Zool. 
lxxii, pp. 565-656, pi. xxxv, figg. 4 & 5. 
ROTIFERA. 
The following memoirs relate to Rotifera : — Amberg (5 & 6), Boeggild 
(36), Brehm (50), Bryce (62), Buffa (63), Castle (74), Daday (106 & 
107), Dixon-Nuttall & Freeman (119), Fischel (137), Jennings (201), 
Keissler (207), Lauterborn (234), Marks & Wesch£ (263), Marsson 
(264), Montgomery (292), Piovanelli (337 & 338), Rousselet (369), 
Skorikov (398), Steurer (407), Yoigt (437, 440), Zacharias (460, 463- 
466), Zykoff (474, 476, 477). 
General Biology. 
Occurrence of male forms, Marks & Wesch^ (263); list, male forms 
found, Rousselet (369). 
Deposits of the sea-bottom, Boeggild (36). 
Variation of Anurcea cochlearis, Lauterborn (234). 
Commensalism between the Philodinidae and Telphusa Jluviatilis , 
Piovanelli (337). 
Heredity of sex, Castle (74). 
Infection of Synchceta pectinata by Ascosporidiumy Zacharias (466). 
Distribution. 
Russia, winter plankton of the Vblga at Saratow, Zykoff (477): fauna, 
Zykoff (474), pp. 76-80. 
England and Scotland, 2 n. spp., Bryce (62). — Lancashire, n. sp., 
Dixon-Nuttall & Freeman (119). 
