BRYOZOA OF THE CAPE VERDE ISLANDS. 33 



There are some specimens of Tubulipora growing irregularly in a band- 

 like form, with large zooecia, the zooecial aperture being about 0'14 mm., 

 whereas in T. Lamourouxii the aperture is only about 0'05 mm. A young 

 specimen of T. Lamourouxii (PL 3. tig. 7, juv.), growing on the present 

 species shows the great difference in size. There are in the interior of 

 the zooecia a few pin-head spines, and in one zooecium, not very far down, 

 there is a row of short teeth. In a specimen from Naples there is an anterior 

 ovicell spreading among several zooecia., with a short tubular ooaciostome, 

 about the same diameter as a zooecium, without any funnel. 



I do not consider that the Stomatopora incrassata, Hincks, is the 

 Tubulipora (Proboscina) incrassata, Smitt, nor am I sure that the form 

 described by Smite in 1871 * is the same species as he originally described. 

 Without a considerable amount of material it is difficult to decide whether to 

 provisionally retain Smitt's name or to give a new one, as it is evident that 

 there has been some confusion. D'Orbigny first gave the name without 

 figures, and the description is insufficient. 



There is a certain amount of resemblance to Filisparsa tubulosa, Busk, from 

 Naples, which, however, grows free or only very slightly attached, and has 

 an ooeciostome with one axis, usually the transverse, much the longer, with an 

 irregular funnel as in T. aperta, Harmer. The zoarium spreads out slightly 

 towards the distal end without being flabelliform, and although the zoarium 

 does not expand as much as in Harmer's specimens, it would seem to be the 

 same as aperta. Harmer, in his 'Siboga' Keport, p. 143, says that T. aperta 

 may possibly be the Hornera tubulosa. Busk. 



Loc. Naples. St. Vincent Harbour, Cape Verde Islands, on clinkers, 

 collected by Crossland. 



Lichenopora irregularis (Johnson), Norman. (PI. 4. figs. 2, 3, 5, 6, 7, 8.) 

 lladiupora irregularis, J. Yate Johnson, " Cyclost. Bry. from Madeira," Ann. Mag. Nat. 



Hist. ser. 6, vol. xx. (1897) p. 63. 



Lichenopora irregularis, Norman, "Poly, of Madeira and neigh. Islands," Journ. Linn. 



Soc, Zool. vol. xxx. (1909) p. 282. 



There are several zoaria growing on a large stone, brought up by a diver 

 from off St. Vincent, ( 'ape Verde Islands, and a small piece on a clinker 

 from St. Vincent Harbour. * 



The very thin lamella is closely attached to the stone, and is more or less 

 circular, quite independent of the outline of the subcolonies ; the central sub- 

 colony is circular or oval, while the outer ones are lobulate or often form 

 " subtriangular lobes " with uniserial zooecia, and in these uniserial forms 

 ovicells have been found. There are also various similar colonies, which 

 from their general appearance seem as if they should be united, but they 

 have bi-multiserial rays throughout the colony (PI. 4. fig. 1) with subcolonies 



* Ufvers. Kongl. Vetensk.-Ak. Forh. 1871, p. 1119. 

 LINN, JOURN. — ZOOLOGY, VOL. XXXIV. 3 



