OF MADEIEA AND NEIGHBOURING ISLANDS. 299 



Trypostega venusta [Norman). H., W. 



1880. Schizoporella ve^iusta, Hincks, Brit. Marine Polyz. p. 276, pi. -30. figs. 6, 7. 

 1902. Tryiwdega vemista, Leviusen, " Studies on Bryozoa," Vid. Medd. f . d. naturf. 

 Foren. i. Kjobenhavn, p. 23. 



Common on stones and shells in shallow water. 



Chorizopora annulata {LamouToux). H. 



1821. Berenice ammlata, Lamouroiix, Exp. M6th. Ordre des Polyp, p. 81, pi. 80, 



figs. 5, 6.* 



This is Cliorizojyora Brongniart'd of Hincks. It is not infrequent on stones 

 and shells in shallow water^ and down to at least 40 fathoms. 



HiPPOTHOA DIVARIOATA {Lamouroux) . W. 

 Frequent. 



HiPPOTHOA FLAGELLUM, ManZOni. 



A few specimens off Madeira {A. M. N.) ; Salvages, on Ostrea cochlear 

 (^De Noronha). 



PORELLA CONCINNA, Bush. B. 



I have not seen this. 



PoRELLA MINDTA, Norman, var. PUNCTATA, Waters. W. 



I have examined the specimen thus named by Mr. Waters in the Funchal 

 Museum. It is very like P. minuta in size and general structure, but the 

 front of the zooecia is punctate and the suboral boss only slightly developed. 

 In a Greenland variety in my collection the surface differs from the usual 

 type in being adorned with ribs radiating from the suboral boss. 



PORELLA TUBULATA (Busk) . B. (PL 38- fig. 8.) 



1861. Esehara tubulata, Busk, Quart. Jour. Micr. Sci. vol. ix. p. 78, pi. 33. fig. 1. 

 1896. Smittia Koehleri, L. Oalvet, Camp, du Caudan, p. 259, pi. 7. figs. 4-8. 

 1903. Cryptella Koehleri, L. Calvet, Result. Camp. sci. Prince de Monaco, fasc. xxiii. 

 Bryoz. prov. camp, de 1' 'Hirondelle/ p. 77, pi. 7. fig. 4. 



Small pieces dredged in 40-70 fathoms. Of ramose growth, the branches 

 are oval in section, being somewhat flattened, with zooecia all round ; the 

 orifices are elevated in tubular form, and are longer than broad or nearly 



* By some extraordinary lapsus in Ann. & Mag. Nat. Hist. ser. 7, vol. xi. 1903, p. 569, 

 I referred to the wrong figures and name in Lamouroux, giving those of j^i'ominens instead 

 of annulata, which latter was of course intended. 



