13 Spong. 
SPONGIIDA. 
standing in the midst of Esperia, Desmacidon, and Myxilla. Includes 
Isodictya gracilis, duhia, Halichondria compressa, &c., Bowerbank, Desma- 
cidon neptuni, Schmidt, and 37 other old species, and the new species, A . 
papillatus, Vosmaer, 1. c. p. 22, Cape of Good Hope. 
Myxilla tliela, Vosmaer, (13) p. 124, Trieste. 
Desmacidon lentus, French Coast, elastica, Cape of Good Hope, Vos- 
maer, (13) pp. 132 & 133. 
Crambe, Vosmaer, (13) p. 135. Desmacidine ; contains irregular, branched 
spicules, smooth or spined linear spicules. Anchorates equi-anchorate. 
Formed for Suberites crambe and fruticosus, Schmidt, which Vosmaer 
unites under the name of harpago, Vosmaer. 
IJastatus, Vosmaer, (13) p. 136. Desmacidine ; contains acerate spi- 
cules with hastate ends, also simple acerates and smooth or spined 
acuates. Anchorates equi-anchorate. Formed for Isodictya larida and 
Ilallchondria diclciei, Bowerbank. 
Vomerula, Schmidt, (9) p. 82. Based on Hymedesmia johnsoni and 
Halichondria falcula, Bowerbank, and the new species, V. tenda, Schmidt, 
1. c. pi. X. fig. 6, Caribbean Sea, and V. tibicen, id. ibid., Grenada, 
170 fath. 
Cladorrhiza concrescens, Schmidt, (9) p. 83, pi. x. figs. 8 & 9, Gulf of 
Mexico, Frederikstadt, and Grenada, 481-860 fath. 
Crino [r] rhiza, Schmidt, (9) p. 83. Based on C. amphactis, id. ibid. 
pi. X. fig. 10, Barbadoes, 288 fath. Agrees outwardly with Cometella, 
has acerate, anchorate, and bihamate spicules. 
Esperia serrato-hamata, Carter, (1) p. 49, pi. v. fig. 20. Has a peculiar 
barbed bihamate spicule. 
Cladorrhiza grandis, Verrill, P. U. S. Nat. Mus. ii. p. 204, off Nova 
Scotia, 180 fath., &c. Stem stout, with elongated clavate body. 
Plicatella villosa, Schmidt, Arch. mikr. Anat. xviii. p. 283, merely 
mentioned by name ; Gulf of Naples. 
Cribrella labiata, Keller, (5) p. 275, pi. xiii. figs. 4-6, Gulf of Naples 
Pore-areas and interior coloured bright yellow by a pigment contained in 
mesodermic cells ; the colour becomes dark on exposure to air. Spicules 
spinulate. 
Tuberella, Keller, (5) p. 276. Differs from Tethya in the almost entire 
absence of dermis, and the absence of stellate spicules. Spicules acerate 
only. T. tethy aides, id. ibid. p. 277, pi. xiv. figs. 7-9, 2\ papillata, id. 
ibid. p. 279, pi. xiv. fig. 10, both from Gulf of Naples. 
Clathria lobata, Cape of Good Hope, ulmus, Hab. ?, reinwardti, Moluccas, 
elegans, North America ; Vosmaer, (13) pp. 151 & 152. [For removal of 
the genus to the Holorrhaphidota, vide supra, p. 4.] 
Tenacia arcifera, Schmidt, (9) p. 81, pi. x.. Gulf of Mexico, 17 fath. 
Suberites vestigium, Carter, (1) p. 52, pi. v. fig. 21, S. fistulatus, id. ibid. 
p. 53, pi. V. fig. 22, Gulf of Mauaar. 
Suberites montalbidus and >8. montiniger, id. Ann. N. H. (5) vi. p. 256, 
Barents Sea, south-west of Novaya Zemlya, 62 fath. 
Suberites prototypus, Czerniavsky, (2) p. 236, Sukhum Bay, Black 
Sea. 
Rhizaxinella, Keller, (5) p. 272. Based oni?. clavigera, id. ibid. pi. xiii. 
