SYSTEMATIC. 
Spong. *33 
Eumastia 0. S., diagnosis of the genus, p. 31, characters and extent, p. 34 ; 
E. sitiens 0. S., redescribed, pp. 31-34, pi. iv, figg. 1-6, pi. x, figg. 9-12: 
Lundbeck (38). 
Foliolina 0. S., diagnosed; F. peltata 0. S., described: Wilson (71) 
p. 390. 
Gelliince , sensu R. & D., subfam. of Ileterorrhaphidce includes Gellius , 
Gelliodes , and Oceanapia ; Lundbeck (38). 
Gellius Gray, genus diagnosed, p. 62, characters, p. 71; G. angulatusl 
(Bwk.) redescribed, pp. 63 & 64, pi. xii, figg. 12a-c£; G. arcoferus 
Yosrn., redescribed and defined from E. Greenland, pp. 62 & 63, pi. xii, 
figg. lla-c: Lundbeck (38). G. centrangulatus , n. sp., from Great 
Redang; Sollas (58) p. 212, pi. xv, fig. 6. G. jlagellifer R. & D., 
redescribed and defined, pp. 71-73, pi. ii, fig. 9, pi. xiv, figg. 1 a-d\ G. 
luridus, n. sp., from 60° 37 Lat. N., 27° 52' Long. W., 799 fathoms, 
and 64° 45' Lat. N., 29' 06' Long. AY., 568 fathoms, pp. 64-67, pi. vi, 
figg. 5-8, pi. xiii, figg. la-c, and 2-8; G. microtoxa , n. sp., from 
60° 50' Lat. N., 26° 50' Long. AA 7 ., 806 fathoms, pp. 67-69, pi. xiii, 
figg. 9 a~d & 10; G. porosus for Desmacella porosa Frist., redescribed 
and defined, includes G. jlagellifer Lambe non R. & D., pp. 73-75, 
pi. xiv, figg. 2a-c; G. primitivus , n. sp., from Julianehaab, pp. 69 & 
70, pi. xiii, figg. 11a & b; G. proximus, n. sp., from Egedesminde, 
15 fathoms, and Ameralik fjord, pp. 70 & 71, pi. xiii, figg. 12a & b : 
Lundbeck (38). G. Sagittarius , n. sp., from Pulau Bidang; Sollas 
( 58) pp. 212 & 213, pi. xv, fig. 7. G., spp., incrusting root-tufts of 
Hyalonema ; Schulze (56) p. 38. 
Halichondria Fleming, diagnosis and characters of the genus; Lundbeck 
(38) p. 16. H. clathriformis Lend., description of type-specimen 
corrected; Whitelegge (69) pp. 282, 283 & 277. H. colossea , n. sp., 
from 64° 45' Lat. N., 29° 06' Long. AY., 568 fathoms, a species closely 
allied to H. pachastrelloides Tops., pp. 27 & 28, pi. iii, figg. 1 & 2, pi. x, 
figg. 3-7 ; //. (!) dijjicilis , n. sp., from 60° 37' Lat. N., 27° 52' Long. AY., 
799 fathoms, and 64° 45' Lat. N., 29° 06' Long. AA 7 ., 568 fathoms, a 
species closely allied to Amorphina nigroeutis Crtr., pp. 28-31, pi. ii, 
fig. 7, pi. x, fig. 8; H. falcula Bwk., vide Hamacantha bowerbanki ; H. 
fibrosa for Amorphina fibrosa Frist., redescribed, from AA 7 est Green¬ 
land, pp. 20 & 21, pi. ix, figg. 3 a-c ; H. genitrix (0. S.), redescribed from 
AA 7 est Greenland, includes Amorphina nodosa Frist., pp. 18-20, pi. ix, 
figg. 2a-c: Lundbeck (38). H. mammillata Lend., description of type- 
specimen corrected; Whitelegge (69) pp. 282 & 277. H. oblonga 
for Reniera oblonga Hans., redescribed, from East Greenland, pp. 24- 
26, pi. ii, fig. 4, pi. ix, fig. 10; H. osculum , n. sp., from Davis Strait 
and E. Coast of Greenland, 10-60 and 393 fathoms, pp. 23 & 24, pi. iii, 
figg. 3-7, pi. ix, figg. 7-9: Lundbeck (38). H. panicea ; Allen & 
Todd (2) pp. 310, 314 & 317 : variation and “metampy ” [vide ii, a, i] ; 
Bidder (4) pp. 380-382: Kerville (26) pp. T65 & 175 : Kirkpatrick 
(27) pp. 318 & 319: Lebour (33) p. 171, vide ii, d, iv: descriptive 
notes on specimens from various localities, and synonymy of the 
species; Lundbeck (38) pp. 17 & 18, pi. ix, fig. 1. H. nibra Lend., 
note on; AYhitelegge (69) pp. 282 & 277. H. sp.; Kirkpatrick 
(27) p. 319. H. tenuiderma , n. sp., from 61° 44' Lat. N. and 27° 00' 
Long. AA r ., 485 fathoms, pp. 26 & 27, pi. x, figg. 1 & 2; H. velamentosa 
for Reniera velamentosa Hans., redescribed, pp. 22 & 23, pi. i, fig. 5, 
pi. ix, figg. 4-6 : Lundbeck (38). 
J fetschnikowia Grimm, diagnosis of genus, p. 52; M. spinispiculum (Crtr.), 
redescribed and defined, pp. 52-54, pi. xii, figg. 4a & b ; Lundbeck 
(38). 
Pellina , remarks on the genus; Bidder (4) p. 382. 
Petrosia AYsm., diagnosis of the genus; Lundbeck (38) p. 54: AA 7 ilson 
1902. [Vol. xxxix.] 
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