150 MARINE BIOLOGY OF THE SUDANESE RED SEA. 
There are about 25 tentacles. Only very few zocecia containing polypides 
have been found, and these only in a very unsatisfactory condition ; evidently 
good specimens are likely to reveal structures of interest. 
The ‘Challenger’ specimens have a broad avicularium by the side of the 
aperture, but they were not abundant, and were overlooked by Busk ; and, as 
mentioned in my ‘Challenger’ supplementary Report, the ovicell has very 
minute perforations. The ovicells are similar from all localities. The internal 
base of the ovicell has about three rows of large pores (fig. 10), and the lateral, 
distal, and basal walis of the zocecia have moderate-sized pores evenly dis- 
tributed over the surface. On the distal wall there may be about 10-15 pores. 
Sections show that two of the tentacles are larger than the others, extending 
beyond them, and having more large nuclei. This is the case in a large 
number of species. 
Mr. Crossland notes that “ large quantities of this Polyzoon * were trawled 
in the Bay of Agig Suraya (in the south part of the Sudan coast). The 
tubular branches are inhabited by a species of the Polycheete worm Cheto- 
pterus, and afford habitat to a very large number and variety of small 
Polycheeta ; smaller crustacea are fewer.” 
Loc. Cobie, Japan, 8-50 fath. (Chall.) ; Sagamibai, Kadsityama, slight 
depths, Maizuru, 385-40 fath., Japan (Ortm.) ; Island of Hnoshima, near 
Yokohama (Waters coll.) ; Mauritius (Azrkp.) ; Trincomalee, as L. gigas, 
Hinceks, and as L. gigantea, Busk, MSS., both specimens apparently received 
from Dr. Johnston (in Brit. Mus.) ; Gulf of Manaar (Lhornely). Khor 
Dongola, on shells (2), off Skukak, 9 fath. (11), trawled in the Bay of Agig 
Suraya (21), Red Sea; Wasin, Brit. Hast Africa, 10 fath. (501), collected by 
Crossland. 
LEPRALIA ? CUCULLATA, Busk. (Plate 15. figs. 1-5, 10.) 
Lepralia cucullata, Busk, Mar. Polyzoa, p. 81, pl. 96. figs. 4, 5 (1854) ; Heller, Verh. der 
k.-k. zool.-bot. Gesellsch. Wien, vol. xvii. (1867) p. 112; Manzoni, Bryozoi del Plioc. ant. di 
Castrocaro, p. 31, pl. 4. fig. 47 (1875) ; Waters, “‘ Bry. of Naples,’ Ann. Mac. Nat. Hist. 
ser. 5, vol. iii. (1879) p. 40, pl. 10. fig. 4; “ Use of the Opercula, &c.,” Proc. Manch. Lit. & 
Phil. Soc. vol. xviii. (1878) pl. 1. fig. 14; Seguenza, “ Formaz. Terz. nella Prov. di Reggio,” 
R. Accad. dei Lincei, a. cclxxvii. ser. 3. vi. (1880) pp. 829, 370; Calvet, ‘‘ Bry. Mar. de la 
Région de Cette,” Inst. Zool. de ?Univ. de Montpellier, ser. 2, p. 52 (1902); “Bry. Mar. 
de Corse,” op. cit. p. 27 (1902) ; Thornely, “ Manaar,” p. 120 (1905); Records of the Indian 
Mus. vol. i. pt. 3, no. 13, p. 190 (1907). 
? Cellepora ovoidea, Audouin (non Lam. & Lamx.), ‘ Desc. de Egypte,’ Hist. nat. vol. i. 
p. 288, pl. 8. fig. 1. 
Lepralia atrofusca, Busk, J. Micr. Sc. vol. iv. (1856) p. 178. 
Microporelia Watersi, De Stefani, Jejo Mont e Capo Vat. p. 129 (1884). 
Schizoporella airofusca, Hincks, Ann. Mag. Nat. Hist. ser. 5, vol. xvii. p. 269, pl. 10. 
figs. 4,5; also var. dabiosa, Hincks, 1886. 
* This is the branching tubular form referred to by Crossland on p. 8 of this volume. 
* 
