TETRACTINELLIDA, LITHISTIDA. 
Spong. 17 
• Geodia conchilega , O. S., p. 134, pi. ii, fig. 22, pi. iii, fig. 39, &c., cydonium , 
0. F. Muller, p. 138, pi. i, figg. 4 & 9, pi. ii, fig. 21, &c., tuberosa , 
0. S., p. 146, pi. i, fig. 3, pi. ii, fig. 20, &c., Adriatic, redescribed, 
Lendenfeld, Denk. Ak. Wien, lxi. 
hops maculosus , Naples, 175 metres, Vosmaer, Tijdschr. Nederland. 
Dierk. Yer. (2) iv, 3, p. 273, n. sp. 
Oscarella lobularis, O. Schmidt, Triest and Lesina, redescribed ; Lenden- 
feld, Denk. Ak. Wien, lxi, p. 99, pi. iv, figg. 55-59 & 66. 
Pachastrella lesinensis , n. sp., Lesina, Lendenfeld, Denk. Ak. Wien, lxi, 
p. 106, pi. ii, fig. 18, pi. iii, fig. 44, pi. iv, figg. 67 & 68. 
Penares helleri (0. S.) Gray, Naples, redescribed ; Vosmaer, Tijdschr. 
Nederland. Dierk. Ver. (2) iv, 3, p. 279. 
Pilochrota mediterranea, Banyuls, France, Topsent, Arch. Zool. exp. (3) 
i (1893), p. xliii, n. sp. 
Placina monolophci , F. E. Schulze, Triest and Lesina, p. 96, pi. iii, fig. 46, 
diloj)ha, F. E. S., Triest, p. 97, pi. iii, fig. 48, trilopha , F. E. S., 
Lesina, p. 98, pi. iii, fig. 45, pi. iv, fig. 54, redescribed ; Lendenfeld, 
Denk. Ak. Wien, lxi. 
Pcecillastra fragilis , Naples, 150-200 metres, p. 285, cumana , Cumae, 
150 metres, p. 286, Vosmaer, Tijdschr. Nederland. Dierk. Ver. (2) 
j iv, 3, n. spp. 
Sanidastrella , n. g., with S. coronatct , n. sp. : Topsent, Arch. Zool. exp. 
(2) x, p. xviii, Banyuls, depth 15-20 metres. 
Stelletta stellata , Banyuls, France, Topsent, Arch. Zool. exp. (3) i 
(1893), p. xliii, n. sp. 
S. grubei , 0. S., p. 108, pi. ii, fig. 15, pi. iii, fig. 36, dorsigera , O. S., p. 110, 
pi. i, fig. 2, pi. ii, fig. 17, pi. iii, fig. 34, boglicii , 0. S., p. 112, pi. i, 
fig. 1, pi. ii, fig. 16, pi. iii, fig. 33, pumex , 0. S., p. 113, pi. ii, fig. 13, 
pi. iii, fig. 32, simplicissima , 0. S.,p. 114, pi. ii, fig. 14, pi. iii, dig. 35, 
hispida , Buccich, p. 115, pi. ii, fig. 19, pi. iii, fig. 31, Adriatic, 
redescribed ; Lendenfeld, Denk. Ak. Wien, lxi. S. grubii, O. S., 
Naples, redescribed ; Vosmaer, Tijdschr. Nederland. Dierk. Ver. (2) 
iv, 3, p. 283. 
Stryphnus mucronatus (0. S.), Soli., Naples, redescribed; VosAiaer, 
Tijdschr. Nederland. Dierk. Ver. (2) iv, 3, p. 280. 
Synops ancepSy Naples, 175 metres, Vosmaer, Tijdschr. Nederland. Dierk. 
Ver. (2) iv, 3, p. 275, n. sp. 
3b. LITHISTIDA. 
SDesmanthuSy n. g., for Aciculites incrustans, Topsent ; Topsent, Arch. 
Zool. exp. (3) i (1893), p. xxxvi. 
^ Tetranthella, n. g., for Suberites fruticosuSy O. Schmidt; Lendenfeld, 
Zool. Anz. xvii, p. 49. T. fruticosa , 0. S., redescribed ; Lendenfeld, 
Denk. Ak. Wien, lxi (1894), p. 189. 
Tetranthellidot, n. fam. of the Lithistida anoplia y with Tetranthella , n. g. ; 
Lendenfeld, Zool. Anz. xvii, p. 49. 
1893. [yol. xxx.] v 7 
