CRIBRILINA ANNULATA. 193 



HABITAT. Between tide-marks, on Algae, stones, &c., 

 and in moderate depths. 



LOCALITIES. Very widely distributed on the British 

 coasts. Shetland, tide-marks; the Minch (A. M. N.) : 

 South Devon; Ilfracombe; Guernsey; Isle of Man (T. H.): 

 Hastings (Miss Jelly) : Birterbuy Bay (G. S. Brady) : &c. 



GEOGRAPHICAL DISTRIBUTION. North Sea (littoral re- 

 gion, on Algae) to Bahusia (Smitt) : Southern Norway 

 (Boeck) : Kara Sea (Nordenskiold) : France, south-west 

 (Fischer). 



RANGE IN TIME. Coralline Crag, on shells, abundant 

 (S. Wood) : Middle Pliocene beds (Lower and Middle 

 Coralline Crag) (A. Bell). 



CRIBRILINA ANNULATA, Fabricius. 

 Plato XXV. figs. 11, 12. 



CKLLKPORA ASHCLATA, Fabr. Faun. Groenl. 436. 



LKPRALIA ASSULATA, Johnst. B. Z. ed. 2, 312, pi. Iv. figs. 2, 3 : Stalk, B.M. 



Cat. ii. 76, pi. bocvii. fig. 1. (Not the L. annulata, Heller, 



Bryoz. d. Adriat Meeres, 33, which is probably Cribrilina 



radiata.) 

 ? REPTESCHARKLLA HEERMANNII, Gabb $ Horn, Monogr. Polyz., Journ. 



Acad. Nat. Sc. Philadelphia, v. pt. ii. 137, fig. 20. 

 ESCHARIPORA ASHULATA, Smitt, CEfv. K. Vet.-Ak. Forh. 1867, Bihang, Krit. 



Fort. iv. 4 and 63, pi. my. figs. 8-10. 



Zooecia regularly ovate, very distinct, convex, produced 

 into a point below, semialternate, obscurely carinate 

 in front, with about six punctured furrows on each 

 side ; orifice suborbicular, slightly compressed trans- 

 versely, with a thickened peristome, projecting in front 

 into a mucro ; marginal spines three or (occasionally) 

 four. Oaecia globose; very small and inconspicuous, 

 set far back, glabrous, punctured : two spines showing 

 in front of it, which are commonly united so as to form 

 an arch-like rib. 



