XORTH-ITALIAN BRYOZOA. 9 



aperture, both on the proximal and distal edge. Although the 

 '^ onychocellaires " (vicarious avicularia) are not quite as simple, and 

 a tongue projects into the avicularian opening, yet in the main they 

 agree with those of 0. angulosa. Prom general appearance we 

 should not have imagined a connection between the now widely 

 separated genera CeUaria and Onycliocella ; but, having obtained 

 the key in these minute characters, we seem to find the connection 

 in other species as well. 



Koschinsky * has made a genus, Hhac/asostoma, which, it would 

 seem, should be considered a sjmonym. The clefts (Spalten) shown 

 at the side of the oral aperture in Koschinsky's figures are more 

 marked than in any specimens which I have examined, and usually 

 in 0. angulosa there is nothing of the kind ; but it sometimes 

 occurs, and is then caused by the greater development of the lower 

 lip. The slits at the side of the oral aperture in Aspidostoma are 

 filled by the operculum, but this is not here the case. 



10. Ontchocella AifGULosA (Rcuss), (non d'Orb.). 

 (a) Incrusting. 



Cellepora angulosa, Heuss, Poss. Polyp, des Wien. Tert. p. 93, 

 pi. xi. fig. 10. 



Membranipora angulosa, Heuss, Bryoz. von Crosaro, pp. 253, 262, 

 291, pi. xxix. figs. 9-11 ; Poram. Anth. u. Bryoz. von Oberburg, 

 p. 30 ; Bryoz. Oest.-Ung. Mioc. p. 185 (45), pi. x. figs. 13, 14 ; Poss. 

 Pauna d. Olig. von Gaas, p. 470 ; Manzoni, Brioz, di Castrocaro, 

 p. 8, pi. i. fig. 1 1 ; Brioz. foss. Ital. pt. 4, p. 9, pi. ii. fig. 10 ; Waters, 

 Ann. Mag. Nat. Hist. ser. 5, vol. iii. p. 122, pi. xiii. fig. 3 ; Pergens, 

 Plioc. Bryoz. von Hhodes, p. 16. 



Memhranipora antiqua, Busk, Quart. Journ. Micr. Soc. vol. vi. 

 p. 262, pi. XX. figs. 1, 2. 



? Mollia antiqua, Smitt, Ploridan Br5^ozoa, p. 12, pi. ii. fig. 73. 



? Membranipora Tiexagona, Busk, Quart. Journ. Microsc. Soc. 

 vol. iv. p. 308, pi. xii. fig. 4. 



Onijchocella antiqua, JuUien, Bull. Soc. Zool. de Prance, vol. vi. 

 p. 9. ' 



Onycliocella Marioni, Jullien, loc. cit. p. 7, woodcut. 



A'inphiblestrum angulosum, Pergens, Bryoz, von Wola Lu'zanska, 

 Bull. Soc. Belg. de Geol. vol. iii. p. 67. 



? JRliagasostoma hexagonum, Koschinsky, Bryoz. iilt. Tert. siidl. 

 Bayerns, p. 30, pi. v. figs. 5-7. 



(h) In Vincularia stage, PI. I. fig. 20. 



Escliara excavata, Eeuss, Poss. Polyp. Wien. Tert. p. 72, pi. viii. 

 fig. 36. 



Biflustra excavata, Manzoni, Brioz. foss. Mioc. d'Aust. ed Xing, 

 p. 67, pi. xiii. fig. 44. 



Vincularia royana, d'Orb. Pal. Pr. p. 108, pi. 602. figs. 12, 13, 

 pi. 673. figs. 2, 3. 



■^ Bryoz. alt. Tert. siidl. Bayerns, p. 29. 



