11ETEPORA BEANIANA. 391 



RETEPORA BEAXIANA, King. 



Plate LIII. figs. 1-5. 



CELLULOSA, Jameson, Werner. Mem. i. 560. 

 RETEPORA CELLULOSA, Johnston, Loudou's Mag. N. H. vii. 638, fig. 69. 

 RETEPORA. BEANIAKA, King, Ann. N. H. xyiii. (1846), 237: Johnst. B. Z. 



ed. 2, i. 353, fig. 67 : Busk, B.M. Cat. pt. ii. 94, pi. cxxiii. 



figs. 1-5 ; Crag PoL 75, pi. ili. figs. 2, 5, 6, & 7. 

 ? RETEPORA CELLULOSA (part.), Sara, Reiae i Lof. og Finns. 31. 

 ? LEPRALIA LOBATA, Busk, Crag Pol. 50, pi. vi. fig. 7, pi. xxii. fig. 4 (the 



young state). 

 RETEPORA CELLULOSA, forma BEANIANA, a, var. BOREALIS, Smitt, CEfv. &c. 



1867, Bihang, 34 and 200, pi. ixviii. figs. 217-221. 

 ESCHARA BEANIANA, Smitt, Bryoz. Nora Zombla, (Efv. &c. 1878, no. 3, 23. 



Zoarium infundibuliform or cup-shaped, wavy, undulated, 

 the recurved edges sometimes uniting and forming 

 more or less cylindrical cavities; or consisting of a 

 broad, spreading expansion, much and irregularly con- 

 torted, the margin sinuated and recessed ; with a very 

 short rudimentary stem, which rises from a small, 

 subgranular, incrusting base ; fenestree oval, rather 

 large. Zooecia cylindrical, slightly convex, elevated 

 towards the upper extremity ; surface smooth ; orifice 

 (primary) arched above, lower margin almost straight, 

 and in the centre of it a short rostrum, supporting an 

 avicularium, with semicircular mandible directed down- 

 wards *, two or three minute denticles projecting from 

 the inner side of the avicularium; peristome thin, 

 slightly elevated, and rising on each side of the mucro 

 into a small point or denticle ; oral spines in the young 

 cells six, in the older four, tall and acuminate, of which 

 two are situated a little above the lower margin and are 

 \ i>il)le in front of the ovicell. Dorsal surface subgra- 

 nular, vibicate, traversed by raised white lines; at the 



* Smitt describes a small, sessile, obliquely placed avicularium. with a 

 triangular mandible, aa occasionally developed at the base of the rostrum 

 close to its side. This seems to be very rarely present. 



