.'I 
BIOLOGY. 
Spong. 7 : 
(iii) Anatomy of the Soft Tissues. Canal-System . 
Variation in anatomy of sponges ; Wilson (46) p. 38. 
Anatomy of Leucosolenia eleanor, pp. 46-55 : of Sycandra coacta, pp. 58 
& 59 : of Leucandra heathi , pp. 66 & 67 ; Urban (39). 
Canal-system of Hexactinellida ; Minchin (22) pp. 441 & 442. 
Structure of the poral and cloacal vestibules of Cinachyrd barbata Sollas, 
with comparisons with other species ; KirkpAtrick (15). 
Canal-system of Hexadella indica , pp. 61 & 62, pi. i, figg. 1-3 : of 
Myriastra clavosa, pp. 73 & 74 : of Pilochrota kornelli, p. 76 : of Ecionema 
carteri ) p. 80: of Tetilla pocidifera, p. 91, T. anomala, p. 92, and T. 
limicola, p. 94 : of Paratetilld cineriformis , p. 98 : of Coppatias reptanh, 
p. 108 : of Xenospongia patelliformis, p. 118 : of Spirastrella tentorioides , 
p. 126: of Collocalypta aigitata, p. 200: of Hippospongia anomala , p. 215, 
and //. dura , p. 216 : of Hircinia fusca , p. 220, H. tuber osa, p. 221, IP. 
schulzei , p. 222, and H. anomala , p. 223 : of Leucandra donnani , p. 229 ; 
Dendy (8). 
Anatomy of Cliona ckilensis , pp. 410 & 41 1 : of Suberites sulcatus , p. 417, 
and S. ruber , p. 419: of Axinella crinita , p. 425: of Pseudaxinella egregia , 
p. 426 : of Higginsia papillosa , p. 428 : of Desmacidon platei , p. 437 : of 
Batzella corticata , p. 439 : of Eurypon miniaceum , p. 446 : of Microciona 
discreta , p. 448 : of Hymedesmia irritans, p. 455 : of Oligoceras sororia , 
p. 480, and 0. paupera , p. 481 : of Aplysilla sulphur ea, p. 488, and A. 
lendenfeldi , p. 489 : of Halisarca dujardini var. magellanica , p. 490 ; 
Thiele (36). 
Canal-system of Raspailia ; Pick (28) pp. 38 & 39. 
Anatomy of Tethya armata, p. 4 : of Tethyopsilld globosd, p. 5 : of 
Ancorina bacilli f era,, p 7 : of Sidonops globosa, p. 9: of Reniera implexa, 
p. 13 : of Tedania digitata, p. 17 : of Lissodendoryx monticularis , p. 23 : 
of Coppatias sansibarensis , p. 24 : of Donatia viridis and D. parvistella , 
pp. 26 & 27 ; Baer (1). 
Canal-system of Darwinella warreni , p. clxxxi : of Pier aplysilla minchini , 
p. clxxxv ; Topsent (37). 
(iv) Skeletal System. 
(a) General Accounts. — Skeleton of the genus Raspailia ; Pick 
(28) pp. 41-44. 
(b) Material of the Skeleton. — Nature of the material of cal- 
careous spicules ; Butschli (4) ; Maas (19) ; W eiNschenIl (42). 
Substance of siliceous spicules termed spicopal : structure of the spicules 
of Tethya lyncurium ; Vosmaer & Wijsman (41). 
(c) Morphology, Development and Nomenclature of 
Skeletal Elements. — Morphology and variation of sponge spicules; 
Wilson (46) pp. 38 & 39 and 42. 
Morphology of monaxon spicules of Calcarea ; Minchin (23) p. 10. 
The development of the spicules of Sycons ; Woodland (47). 
Sniculos of Hexactinollida ; Minchin (22) pp. 443-447. 
Morphology of the cholue and ancorra ana of their varieties, pp. 2-7 : 
abnormal spicules of Mycale lingua , pp. 31 & 32, text-fig. 1 : special 
embryonic spicules (microsclefes) in Cladorhiza iniquidentata , p. 93, C. 
corticocancellata, p. 96 and Chondrocladia giganted, p. 106 : morphology 
of the bipocilla of Iophon and Rocillon, p. 174 : of the birotulae, p. 197 : 
the term sphserancora proposed for the melon ^ shaped ancorae of Melon- 
anchora, p. 211, footnote, their development, p. 214 ; LundbEck (17). ; 
