CTITLOSTOMATA. 
Moll. 95 
CyUndro])orGlla. Oral extremity produced, tubular, with a terminal 
orifice ; an elevated pore on the front of the coll. Typo, L. tuhulosa 
(Norm.). Oj>. cit. xix. p. 101, pi. xi. fig. 8, and xx. p. 528. 
Lagenipora. Colonies consisting of a number of cells immersed in a 
common calcareous crust ; zocecia decumbent, contiguous, the front wall 
solid ; oral extremity produced, tubular, with a terminal orifice. L. 
socialis, sp. n. . 0|). cit. xx. pp. 214, 215, & 528, Hastings, on Pecten 
maximus. 
Schizotheca. Zocecia with a suborbicular primary aperture, the lower 
margin slightly sinuated ; secondary aperture raised, tubular, notched or 
dentate in front; oo-(ecium terminal, with a fissure in the front surface. 
Typo, Lcpralia Jissa (Busk). Tom. cit. p. 528, 
Rhynchopora. Inferior margin of the aperture supporting an uncinate 
process ; a large avicularium placed transversely below the aperture ; 
oo-oecium terminal, closed in front by a calcareous lamina. Type, L. 
bispinosa (Johnst.) ; p. 528. 
Setosella. Yibracular cells alternating with the zocecia throughout the 
colony ; vibracula setiform. Tj pe, Memhranipora vulncrata (Busk) ; 
p. 529. 
Megapora. Oral aperture trifoliate ; oral valve composed of two por- 
tions, a fixed transversely elongate lamina and a moveable lip. Type, 
L. ringens (Busk) ; p. 529. 
Memhranipora pilosa ijj.). The larvae {Cyphonautes) and their meta- 
morphosis described by J. Barrois, 1. c. pp. 212-246, pis. xii.-xv. Some 
observations on CypTionautes by Hatschek, 1. c. 
Membranipora cymboifor'mis \_cymhif-'] (= sjnnifera, Smitt, nec Johnst.), 
Hincks, Ann. N. H. (4) xix. p. 99, Iceland ; M. nodulosa, aurita, and 
flustroidcs, id. op. cit. xx. p. 213, Great Britain ; M. spinosa, Joliet, Arch. 
Z. exp^r. vi. p. 290, Roscolf : spp. nn. 
Mtriozoid.®. 
Myriozoum mbgracilc (Orb.), from Iceland; avicularia described by 
Hincks, Ann. N. II. (4) xix. pp. 106 & 107. 
Mollia hyalina (L.). Larvae and metamorphosis by Barrois, 1. c. 
pp. 163-172, pi. ix. 
Hippothoa flagellum (Manzoni) abundant on the British coasts; 
Hincks, op. cit. xx. p. 218. ^ 
Escharidac. 
Eschar a foliacea (Pall.). White variety ; Joliet, 1. c. p. 291, Roscolf. 
Lepralia pallasiana (Moll.), ciliata (Pall,), spinifera and unicornis 
(Johnst.), Porella Icevis (Flem.). On their development ; Barrois, 1. c. 
pp. 134-158, pis. vii. & viii. Development of L. granifera (Johnst.) ; 
Joliet, 1. c. pi. ix. figs. 5-8. 
Lepralia marmoi’ea, sp. n,, Hincks, Ann. N. H. (4) xx. p. 214, Cornwall. 
Lepralia martyi\^-tii\^ sp. n., Joliet, 1. c. p. 291, Roscolf. 
