266 



which I must also refer to Figulina, bears a closer resemblance to the Eiithy- 

 roides species than any of the other Figulina species. — The author does not 

 mention avicularia, but at the top of his figure he has drawn something which 

 is undoubtedly an independent avicularium, the opercular area of which is pro- 

 vided with a strongly developed cryptocyst. 



Family Crepidacanthidae n. f. 

 Crepidacantha nov. gen. 



The zocecia, whose aperture has strong hinge-teeth and a compound well-chi- 

 tinized operculum, are in the proximal half provided with 9 — 12 very long mar- 

 ginal spines and with 8 — 11 small uniporous pore-chambers alternating as a rule 

 with small intermediate chambers, each of which has an uncalcified spot (a mar- 

 ginal pore) in its roof. Two frontal vibracula without a cross-bar. The hyper- 

 stomial, almost free ooecia consist of two calcified layers, of which the ectoooecium 

 is provided with a number of pores. 



C. Poissoni Aud., var crinispina n., 



Flustra Poissonii Audouin, Description de I'lSgypte, 



Histoire naturelle. Tome I, explication sommaire 

 des Planches, pag. 240; Polypes, PI. 10, figs. 5i — 62. 

 Lepralia Poissoni Jelly, A synonymic catalogue of the recent 

 marine Bryozoa, 1889, pag. 131. 

 (Figs. 1-6). 

 The zooBcia, which have a broad, roundedly rhombic outline and are provided 

 with narrow, transversely ovate, marginal pores (fig. 1), are very convex, and the 

 frontal wall shows a number of finely undulating, dendritical, sutural lines. The 

 aperture, whose distance from the distal end of the zocecium is about as large as 

 its own length, is longer than broad, provided with a prominent anter and con- 

 stricted in the proximal third by two triangular, proximally converging processes 

 within each of which is seen a strong conical hinge-tooth. The proximal margin 

 of the aperture is provided with a broad, roundedly trapeziform process on each 

 side of which there is a small rounded sinus. The operculum (fig. 5) which is 

 well-chitinized, punctate, of a yellow colour and distinctly separated from the 

 compensation-sac, is provided with a partly developed opercular arch consisting 

 of two lateral ridges, hi the distal half of the zocecium there is found 9—12 very 

 long and thin, marginal spines and a similar number of small quadrangular uni- 

 porous pore-chambers (figs. 2—3) alternating as a rule with a similar number 

 of small intermediate chambers (figs. 2—3), each of which is in connection 



