KHIZOPODA. 
Prot. 9 
Order III. Pii^osrii.ERiA. Skeleton composed of numerous hollow 
tubes, arranged so as to form a large reticulate shell. 
Fam. 7. Aulosphceridce i genera, Aulosphcera, A ulodictyum, 
Auloplegma. 
Fam. 8. Cannosphceridce ; genera, Cannacantlia, Cannosphaira, 
Ccelacantha. 
Order IV. Phaloconchia. Skeleton composed of two reticulate valves, 
often beset with simple or compound tubes. 
Fam. 9. Comliari\i\ dee ; genera, Concharium, &c. 
Fam. 10. Coelodendrilildce-, genera, Coalodendrium^ 
This classification is derived to a great extent from the results of the 
‘Challenger’ Expedition, which has furnished immense numbers of 
new forms, chiefly from the Pacific, said to amount to upwards of 2000 
species. 
Acantkometra elastica, (7) pi. i. fig. 2, serrata, 1. c. pi. i. fig. 7, pi. iii. 
fig. 10, ciispidata, 1. c. pi. ii. fig, 5, claparedii^ 1. c. p. 161, pi. i. figs. 5 & 
10, pi. ii. fig. 14. 
Acantliochiasma 7'uhescens, (7) pp. 136, 138, & 146, pi. i. fig. 1, pi. ii. 
fig. 7, no distinct central capsule, the contractile fibres are replaced by 
a contractile membrane, krohni, 1, c. pi. ii. fig. 6. 
Acanlhostaurus purpurescens, (7) p. 151, pi. iii. figs. 6, 7, 13, & 15. 
Amphilonche helonoides^ (7) pi. i. fig. 3, pi. ii. fig. 2. 
Doi'ataspis crucifera^ (7) pi. i. fig. 6. 
Acanthocystis chcetophora, (8) p. 264, pi. xliii. figs, 1-6. 
Acanthocystis sp. ?, (8) p. 268, pi. xliii. figs. 7-13 ; another sp. ?, 1. c. 
p. 270, pi. xliii. figs. 14-16 : both from N. America. 
Hyalolampe femsh'ata, (8) p. 271, pi. xlv. fig. 9. 
Clathrulina elegans, (8) p. 273, pi. xliv. Developmental stages 
described. 
Diploconiis fasces, (7) p. 156, pi. ii. fig. 3. 
Xiphacantha serrata, (7) p. 130, pi. ii. fig. 4. Has a single nucleus. 
Thalassicola sanguinolenta, (7) p. 165, pi. iii. fig. 1 ; pelagica, 1. c. p. 163; 
pi. iii. fig. 4 ; micleala, 1. c. p. 162. 
Thalassolampe primordialis, (7) p. 160, pi. iii. fig. 5 ; margarodes, 1. c. 
p 162 . 
Collozoum inerme, (7) pi. iii. fig. 12. 
Haliommatidium muelleri^ (7) pp. 154 & 155. Has a single nucleus. 
Haliomma erinaceus, echinaster 1 , echinaster, (7) pp. 169 & 170, pi. iv. 
figs. 1, 6 & 9. Some of the skeleton lies within the capsule. 
Rhizospheera trigonacantha^ (7) pi. iv. figs. 3 & 10. 
ActinoMma asteracanthium?, (7) p. 170, pi. iv. fig. 4. Some of the 
skeleton lies within the capsule. 
Spongospkeera streptacantha, (7) pi. iv. fig. 5. 
Tetrapyle octacantha, (7) p. 180, pi. iv. fig. 7, pi. vi. figs. 2 & 5. 
Echinospheera datura, (7) pi. iv. fig. 8. Tetrapyloid form ; and pi. vi. 
figs. 1 & 3. 
Diplosphcera gracilis ?, (7) p. 168, pi. v. fig. 1. 
Arachnosph(era myriacantha, (7) pi. v. fig. 3. 
