266 



which I must also refer lo I'i<iiilin<i, hems a closei- resemblance to the Eiilliij- 

 roides species than any of llie oilier Figiiliiid species. — Tlie author does not 

 mention avicularia, hut at tlie top of his hgure 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 zod'cid, whose aperture has strong liinge-teeth and a compound well-chi- 

 tinized operculum, are in the proximal half provided with i)- 12 very long mar- 

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

 with small intermediate chaniber.s, each of which has an uncalcified spot (a mar- 

 ginal pore) in its roof. Two frontal vibraciiUi without a cross-J)ar. The hyper- 

 stomial, almost free oaria consist of two calcified layers, of which the ectooa'ciiim 

 is provided with a number of pores. 



C. Poissoni Anil., \ar crinispina n., 



Flustra I^oissonii Audouiu, Description de I'Kgypte, 



Hisloire natnrelle, Tome I, explication sommaire 

 des Planches, pag. 240; Polypes, PI. 10, figs. 5i — 52. 

 Lepralia Poissoni Jelly, A synonymic catalogue of the recent 

 marine Bryozoa, 1889, pag. liil. 

 (Figs. 1-6). 

 The zocEcia, which have a broad, roundedly rhombic outline and are j)i()vided 

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

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

 aperture, whose distance from the distal end of the zoircium 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, roundeiily trai)eziform [)rocess on each 

 side of which there is a small rounded sinus. The o|)ercuhim (fig. .')) which is 

 well-chitinized, punctate, of a yellow colour and disfincliy sei)arated i'loiii the 

 compensation-sac, is provided with a partly developed oi)erciilar arch consisting 

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

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

 porous pore-chambers (figs. 2 — :{) alternating as a rule willi a similar number 

 of small inleriiiediale cliaml)ers (ligs. 2—3), each of which is in connection 



