BRYOZOA OF THE CAPE VERDE ISLANDS. 13 



It is advisable to c.ill attention to the similarity between tbe primary 

 zooecia described by Smitt in his Discopora coecinea * , D. ventricosa -f, Smitt, 

 I), stenostomai, Smitt, and the mature zooecia in certain Cribrilince such as 

 C. Gattyce, C. Balzaci, and to a certain extent C. figularis, Hincks. 



Loc. Very widely distributed. St. Vincent Harbour, Id fath., collected 

 by Crossland. 



Fossil. Eocene, Miocene, and Pliocene. 



Thalamoporella Rozieri (Audouin), Hincks. (Plate 4. figs. 9, a, b, c.) 



For synonyms and localities see Waters, "Bryozoa.of the Sudanese Red Sea,"' Journ. Linn. 

 Soc, Zool. vol. xxxi. (1909) p. 141, pi. 15. figs. 12-15, and add :—? Robertson, "Incrust.' 

 Chil. Bry.," Univ. of California, Pub. Zool. vol. iv. (1908) p. 277, pi. 17. figs. 27, 27 «, 28, 

 29, pi. 18. fig'. 30; Levinsen, Morph. & Syst. Studies on the Oheil. Bry. p. 181, pi. 6. 

 figs. 6 «-6 h, pi. 6 b. figs. 1 «-3 b (1909) ; ? Osburn, " Bry. of the Tortugas Islands, Florida," 

 Publ. 1S2, Carnegie Inst, of Washington, p. 196 (1914). 



Vincularia novce-hollandim, Haswell, Proc. Linn. Soc. N.S. Wales, vol. v. (1881) p. 41, 

 pi. 3. tig. 3. 



Thalamoporella novce-hollandice, Levinsen, Morph. & Syst. Studies on the Clieil. Bry. 

 p. 185, pi. 6 a. figs. 3 0-3/ (1909). 



The form from the Cape Verde Islands is the same as that from the Red 

 Sea, described by me in the "Sudanese Red Sea " Report, which must be 

 taken to represent the type well figured by Savigny, who apparently found 

 no avicularia, and the opercular knobs were very pronounced ; but in the 

 Cape Verde Islands specimens there is great variation in this respect, and 

 sometimes in the younger parts of a colony none are seen, whereas in older 

 parts they occur as figured by Savigny. This is a very variable character 

 throughout the family. Of the varieties figured by Hincks § the one most 

 nearly approaching the Red Sea form is Steganoporella Rozieri. var. indica, 

 Hincks. whereas the variety falcife.ra seems entitled to specific rank as 

 proposed by Levinsen. Probably var. labiata, Levinsen, should also be given 

 o-eneric position as the type of avicularia is different. 



Most of the zooecia are about 065 mm. long, but some are longer, others 

 shorter, and this is about the size of co-type specimens of T. novce-hollandice, 

 Hasw., sent to me by Haswell. These I have considered were T. Rozieri, 

 but as my specimens were without membranes they were not suitable for 

 studying the spicules; however, examination shows a •'curve'" (spicule), 

 which Levinsen says docs not occur, it is somewhat larger than the average 

 size in T. Rozieri from the Red Sea and Cape Verde Islands. My specimens 

 of novce-hollandice are cylindrical and hollow, while Levinson speaks of the 

 colonies being partly incrusting. partly free hollow branches, and I see no 



* •■ Krit. Forteclr. oi'v. Skand. Hafs-Bry.," Ofv. Kongl. Yet.-Akad. Forh. (1807), Bib. 

 pi. 27. fig. 1 63. 



t lb. (1871) pi. 21. fig. 31. % lb. (1871) pi. 21. fig. 29. 



§ Ann. Mag. Nat. Hist. bop. 5, vol. vi. (1880) p. 379, pi. L6. tii. I 



