50 ANTHOZOA HYDROIDA. 



I can find no characters either in the description or figure of Tub. 

 gigantea which warrant its separation as a distinct species. The 

 character given by Lamouroux is : " T. tubulis rectis, simplicissimis, 

 ad basim attenuatis, gradatim dilatatis, deinde sequali crassitie, 

 Isevibus nitidisque." 



2. T. DUMORTIERII, solitary, the polype-tube slender and 

 simple, narrowed towards the base, unwrinkled. G-. J. 



PLATE VII. FIG. 1, 2. 



Tubularia Dumortierii, Van Beneden sur les Tubul. 50, pi. 2. 



Hob. On the shell of the Lithodes maja, from Berwick Bay. 



The polypidom of this species grows singly or scattered. It is 

 about two inches in height, and about the thickness of ordinary pack- 

 thread, slightly attenuated towards the base, more or less bent, of a 

 straw-yellow colour when dried, smooth and even, and not ringed, but 

 marked with lines produced by the arrests in its growth at uncertain 

 intervals. It is a simple tube with an even patulous aperture. The 

 polypes are of the usual reddish colour. The bulbules are spherical, 

 and shortly stalked. 



This is so like T. indivisa, that one might conjecture it was that 

 species in miniature, but there can be no doubt of their distinctness. 

 Upon it Van Beneden made his most interesting observations, and 

 he has delineated all the phases of its life in a beautiful series of 

 figures. 



3. T. LARYNX, tubes clustered, slender, cylindrical, ringed 

 at distant and regular intervals. 



PLATE III. FIG. 3; and PLATE 5. FIG. 3, 4. 



Var, a. The tubes simple or undivided. 



Var./}. The tubes subramose. Tub. ramosa, Esper Tub. tab. 9, fig. 1-3. 



Fucus Dealensis fistulosus, laryngae similis, Raii Syn. i. 39, no. 8. Peliv. Oper. iii. 

 39, no. 406. Ellis in Phil. Trans, abridg. x. 453, pi. 10, fig. c ; and xi. pi. 5, fig. 

 3, young. Tubulous Coralline winkled like the windpipe, Ellis Corall. 30, no. 1, 

 tab. 16, fig. 6. Corallina tubularia laryngi similis, Bast. Opusc. Subs. 41, tab. 2, 

 fig. 3, 4 ; and tab. 3, fig. 2-4. Tubularia muscoides, Poll. Elench. 82. Berk. 

 Syn. i. 214. Turt. Brit. Faun. 210. Esper Tub. tab. 4, fig. 1, 2. (The figures 

 in tab. 4 A are all copied from Easier.) Stew. Elem. ii. 438. Lamour. Corall. 

 101. Flem. Brit. Anim. 552. Tubularia Larynx, Ellis and Soland. Zooph. 31. 

 Lam. Anim. s. Vert. ii. 110 ; 2de edit. ii. 126. Hogg's Stock. 34. Thompson in 

 Ann. Nat. Hist. v. 250. Hassall in Ann. and Mag. N. Hist. vii. 284. Mao- 

 gillivray in Ibid. ix. 463. Gould's Massachus. 350. Eudendrium bryoides, 



