() Tun. 
VI. TUNICATA. 
Glavelinidce , p. 307 ; Haiitmeyer, Fauna Arctica iii. 
Corella, p. 271, borealis , p. 271 ; Hartmeyer, t. c. 
Gorellidce , p. 266, key to gen., p. 268; Hartmeyer, t. c. 
Gorellopsis n. g. ( Gorellidce ), p. 272, pedunculata, Spitzbergen, p. 273, pi. v, 
fig. 15, pi. xii, figg. 1-5 ; Hartmeyer, t. c., n. sp. 
Gystingia , p. 188, griffithd, p. 189; Hartmeyer, t. c. 
Dendrodoa , p. 232, key to Arctic spp., p. 234, aggregata , p. 235, pi. v, 
fig. 8, tuberculata, p. 243, pi. v, fig. 9, adolphi , p. 244,’ pi. x, fig. 10, 
subpedunculata , p. 245, kiikenthcdi , p. 246, lineata , p. 248, pi. v, 
figg. 10 & 11, uniplicata , p. 250, and var. minuta , p. 252, arctica, 
p. 252 ; Hartmeyer, t. c. 
Didemnidce, p. 359, key to Arctic gen. and spp., p. 360 ; Hartmeyer, t. c. 
Didemnopsis n. nom. for Didemnoides Lahille, non Drasche, p. 365, varia- 
bile , p. 366, pi. vi, fig. 19, pi. xiv, fig. 22; Hartmeyer, t. c. 
Diplosomidce (gen. and sp. not stated), development ; Pizon, C.R. Ac. Sci. 
cxxxvii, pp. 759-761. 
Diplosomoides , p. 367, dubium, Spitzbergen, p. 368, pi. xiv, figg. 11-13, 
bathyptilum, near Spitzbergen, 1000 metres, p. 370, pi. xiv, figg. 14- 
16; Hartmeyer, Fauna Arctica iii, n. spp. 
Distaplia , p. 313, clavata, p. 313, pi. vi, fig. 4, pi. xi, fig. 21, livida, p. 314; 
Hartmeyer, t. c. 
Distomidce , p. 309 ; Hartmeyer, t. c. 
Distomus, p. 309, crystallinus , p. 309, pi. vi, fig. 3, pi. xi, fig. 20, kiiken- 
thali , p. 311, pi. xiv, fig. 6; Hartmeyer, t. c. 
Eugyra , p. 126, glutinans , p. 12 6, pedunculata, p. 129; Hartmeyer, t. c. 
Fritillaria pellucida , infested by parasitic Mesozoon (Lohmannia n. g.); 
Neresheimer, Biol. Centrbl. xxiii, pp. 757-760, 3 figg. in text. 
Halocynthia, p. 189, key to spp., p. 200, arctica, p. 190, pi. xi, figg. 10 & 11, 
aurantium , p. 195 ; Hartmeyer, Fauna Arctica iii. 
Halocynthiidai, p. 171; Hartmeyer, t. c. 
Hypurgon n. g. ( Didemnidce ) skeati, Malay Peninsula; Sollas, Quart. J. 
Micr. Sci. (n. s.) xlvi, pp. 729-735, pis. xxxiv & xxxv, n. sp. 
Kiikenthalia n. g. ( Styelidce , Polyzoince ), p. 260, borealis , p. 260, pi. xi, 
fig. 12, text-figg. 12-16; Hartmeyer, Fauna Arctica iii. 
Leptoclinum , p. 360, roseum, p. 361, pi. vi, figg. 17 & 18, pi. xiv, fig. 17 ; 
Hartmeyer, t. c. 
f Leptoclinum sp., fossil spicules from raised reefs on Niue (Savage Island), 
p. 363, text-figg. 9-13 ; Sherlock, Bull. Mus. Harvard xxxviii. 
L. polare, near Spitzbergen, 1000 metres, p. 363, pi. xiv, figg. 18-21 ; 
Hartmeyer, Fauna Arctica iii, n. sp. 
Macroclinum, p. 317, key to spp., p. 318, crater, p. 319, pi. vi, fig. 5, pi. xiii, 
figg. 6 & 7, text-figg. 37-39, pomura, p. 322, jordani, p. 322 ; Hart- 
meyer, t. c. 
Microcosmus, p. 200, glacialis, p. 200 ; Hartmeyer, t. c. 
Molgula, p. 133, key to Arctic spp., p. 133, crystallina, p. 134, tenax , 
p. 137, pi. iv, fig. 3, pi. vii, figg. 4-9, ampulloides , pp. 140 & 372, 
pi. iv, figg. 1 & 2, pi. vii, figg. 1-3, retortiformis, p. 145, text-figg. 1 & 2, 
arctica, p. 151, septentrionalis, p. 152, pi. iv, figg. 7 & 8, pi. vii, 
figg. 12-16, pi. viii, fig. 1, nana , p. 156, siphonalis, p. 157, occulta , 
p. 158; Hartmeyer, t. c. : M. manhattensis, pulsation of heart; 
Hunter, Amer. J. Physiol, x, pp. 1-27. 
M. wagneri , White Sea, p. 144, romeri, Spitzbergen and Murman Coast, 
p. 160, pi. iv, fig. 9, pi. viii, figg. 2-7, cynthiceformis , Tromso, p. 163, 
pi. iv, fig. 10, pi. viii, figg. 8-12, pi. ix, figg. 1-4; Hartmeyer, Fauna 
Arctica iii, n. spp. 
Molgulidce, p. 125 ; Hartmeyer, t. c. 
Monascidice, glands of alimentary canal; Isert, Arch. Naturg. lxix (i), 
pp. 237-296, pis. xii-xv. 
