ROTIFERA. 
Verm. 57 
Lake of Plon; collections, Amberg (6), collections, Zacharias (463), 
collections in moor ponds, Zacharias (464), collections, Voigt (437), 
collection, Marsson (264), Lake of Plon and district, n. gen. and spp., 
systematic and biological considerations, Voigt (437). 
Thiiringen and Saxony, collections from ponds, Zacharias (465). 
Alpine lakes, collections, Buffa (63). 
Tyrol, Achensee, plankton, periodicity, Brehm (50). 
Hungary, Lake Balaton, spp. collected, Daday (107). 
Upper Austria, fauna of a lake, Keissler (207). 
Gulf of Triest, plankton, StEurer (407). 
Italy, 2 n. spp., commensal in Telphusa Jluviatilis , PiovAnelli (337) ; 
Lugano (Lago di Muzzano), collection, Amberg (5). 
Asia Minor, n. sp., Daday (106). 
Central Asia, n. spp., Skorikov (398). 
Pennsylvania, n. sp., on Myriophyllum , Montgomery (292). 
Systematic. 
Anomopus n. gen. for A. telphksce n. sp. commensal with Telphusa fluvia- 
tilis , characters, Piovanelli, Monit. Zool. ital. xiv, pp. 347-349, and 
J. Quekett Club viii, p. 522. 
Anurcea cocklearis , variation, Lauterborn, Verh. Ver. Heidelb. vii, 4, 
pp. 529-621 ; A. brevispina , male found at Neasden, characters, 
Marks & Wesch 6, J. Quekett Club viii, J>. 509, pi. xxvi, fig. 2; 
A. aculeata var. brevispina , pp. 84 & 117, pi. iii, fig. 30, var. cochlearis 
nov. var., Plon, pp. 86 & 119, pi. iii, figg. 31a & ?, Voigt, Forschber. 
Plon xi. 
Arthroglena lutJceni , Plon, Voigt, t. c. p. 49, pi. iii, fig. 23. 
Aseomorpha helvetica Perty ( = A. agilis Zach.), Plon, Voigt, t. c. pp. 22 & 
110, pi. iii, fig. 17. 
Asplanchna brightwelli, A. priodonta, pp. 21 & 109, structure and biology, 
Voigt, t. c. 
Brachionus angularis, Plon, Voigt, t. c., pp. 80 & 116, pi. iv, fig. 29; 
B. quadratus , male found at Willesden, characters, Marks & WeschIs, 
J. Quekett Club viii, p. 508, pi. xxvi, fig. 1. 
Callidina cancrophila , Italy, commensal in the branchial cavities of 
Telphusa Jluviatilis , Piovanelli, J. Quekett Club viii, p. 521, n. sp. 
Cathypna ligona , Voigt, Forschber. Plon xi, p. 70, pi. iv, fig. 38. 
Cochleare turbo , Voigt, t. c. pi. ii, fig. 16. 
Coslopus rousseleti , p. 57, pi. iv, figg. 35 a-c, C. uncinatus , p. 58, pi. iv, figg. 
36a & A Ploner See, Voigt, t. c., n. spp. 
Cordylosoma n. gen. for Rhopalosoma (nom prceocc.) Voigt, for C. perluci- 
dum n. sp., Ploner See, Voigt, t. c. p. 12, pi. i, figg. 2 & 3. 
Dasydytes stylifer , Plon, Voigt, t. c. p. 151, pi. vii, fig. 55, n. sp. 
Diaschiza gibba , p. 6, pi. i, fig. 1, D. globata, p. 7, pi. iii, fig. 9, D. sterea , 
p. 8, pi. i, fig. 3, D. gracilis , p. 10, pi. i, fig. 4, D. lacinulata , p. 11, 
pi. ii, fig. 6, D. ventripes, p. 14, pi. ii, fig. 7, D. hoodii , p. 129, pi. ii, 
fig. 5, D. exigua, p. 133, pi. iii, fig. 10, D. coeca , p. 134, pi. iv, fig. 11, 
1). tenuior , p. 135, pi. iv, fig. 12, J). tenuiseta , p. 138, pi. i, fig. 2, 
D. niegalocephala, p. 139, pi. iv, fig. 14, synonymy, anatomy, Dixon- 
Ndttall & Freeman, J. R. Micr. Soc. 1903. 
J). derbyi ', Lancashire, anatomy, Dixon-Nuttall & Freeman, t. c. p. 131, 
pi. iv, fig. 13, n. sp. 
Diglena clas topis, p. 48, pi. ii, figg. 15a-c, D. conura , pi. iii, fig. 22, Voigt, 
Forschber. Plon xi. 
Dinocharis intermedia , Plon, Voigt, t. c. p. 61, pi. iv, figg. 37a & b. 
Distyla plcenenzis, Plon, Voigt, t. c. p. 71, pi. iv, figg. 39 a & 6, n. sp. 
