Rev. T. Hincks's Catalogue of Zoophytes. 251 



Alveolina meandrina (n. sp.), and therefore A. elliptica, are 

 developed upon the same principle as Xummulifes elongated 

 vertically. The former has an interseptal system and marginal 

 plexus of canals; and the latter too, probably. In Alveolina 

 elliptica the greater part of the test is often without chambers, 

 so that its development is as often wholly carried on by the 

 sarcode of the canal-system ; and the same is frequently the case 

 with the last turns of the globose forms of Nummulites, e. g. 

 N. perforata, &c.; while in Alveolina elliptica also, the chambers 

 sometimes disappear and reappear at inter\'als, leaving the spire 

 to go round by itself between them, as exemplified also in the 

 annular canals of Orhitolites Mantelli and Orbitoides dispansa. 

 These are the instances to which I have before alluded as evi- 

 dencing a development of the chambers upon the sarcodal fila- 

 ments of the canals. 



The new genus for which the term " Conulites" above-men- 

 tioned is proposed has the following generic characters : — 



"Conical, compressed, discoidal; consisting externally of a 

 spiral layer of rhomboidal chambers extending from the apex to 

 the circumference ; filled up internally with convex layers of 

 compressed columnar chambers interspersed with white columns 

 of condensed shell-substance ; white columns opake, conical, 

 their shai'p ends resting on the inner aspect of the spiral layer, 

 and their large ones terminating at the base of the cone, which 

 presents a slightly convex granular surface.'' 



XXVIII. — A Catalogue of the Zoophytes of South Devon and 

 South Cornwall. By the Rev. Thomas Hincks, B.A. 



[Continued from p. 161.] 



[Plates VII. & VIII.] 



Order SERTULARID^, Huxley. Fam. Sertnlariadae, Johnst. 



1. Halecium, Oken. 



1. H. halecinum, Linn. 



Very common ; abundant and of great size amongst the 

 trawl-refuse. 



2. H. Beanii, Johnston. 



Very common ; dredged abundantly all along the coast, 

 Very fine in Salcombe Bay and Torbay. I have a specimen 

 which stands 5 inches high, while the spread of the branches 

 measures 6 inches. 



[Lamlash, Arran ; Filey, Yorkshire ; Llandudno, N. W. ; 

 Ramsay, Isle of Man.] 



