TUBULARIA LARYNX. 407 



TuiiULARi.v MuscoiDEs, — Pul/us, Eleucli., p. 82 (ncc Llniueus, Giuel. Lin., 3832). 



Tuiu'L.uuA L.iRYNX, — SuldiKkr's ElUs, p. 31. Lamarck, Auim. s. Vert., 1816, vol. ii. 



Duhjell, Rare and Rem. Anim., vol. i, p. 42, pi. v. Johnston, 



Brit. Zooph., second edit., p. .50, pi. iii, fig. 3, and 



pi. V, figs. 3, 4. Alder, Catal., p. 16. 



TuBUL.iRiA coRO.VATA, — AhUdguard, in Zool. Dan., pi. 141. Van Beneden, Tubulaires, p. 49, 



pi. i, figs. 7 — 19, and Faune lit. de Belg., p. 106, pi. iv. 

 Hincks, Brit. Ilydr. Zooph., p. 119, pi. xxi, fig. 2. 

 EuDENURiUM BRVoiDEs, — Elirenhertj , Coralleuthiere, Abhandl. Ak. Wissen. Berl., 1832, 



p. 296. 

 EoDENDRttiM SPLEXDIDU.M (?), — Elircnberg, Corallcntliierc, Aljhandl. Ak. AVissen. Berl., 



p. 296. 

 TuBULARiA GRACILIS, — Hurveij, in Proc. Zool. Soc. Lond., 1836, No. 41, p. 51. Johnston, 



Brit. Zooph., second edit., p. 52, pi. iv, figs. 3, 4, .5. 

 Alder, Catal., p. 17. 



TROPHOSOME. — Hydrocaulus consisting of numerous brandling stems liaving 

 a diameter of about -hih. of an inch, and rising from a creeping stolon to a height of 

 from one inch and a ludf to two inches, or even more ; stems presenting at intervals 

 more or less distinctly marked transverse annulations ; cct;nosarc forming a collar- 

 like expansion just below the hvdrauth. Htdrantiis about one fifth of an inch 

 across the widest part of the body, with a circlet of from fourteen to twenty distal 

 tentacles in two closely approximate alternate series, and with the proximal tentacles 

 about twenty in number, and about two fifths of an inch in length. 



GONOSOME. — GoxopiiORES in pendulous clusters, forming in the male long 

 simple racemes, which, when mature, surpass the proximal tentacles in length, while 

 in the female the much shorter clusters do not equal these tentacles in length, and 

 the peduncle is here branched, so as to form a sort of panicle or compound raceme. 

 The gonophores are destitute of gastro-vascular canals, and are crowned with four 

 conical tentaculiform tubercles, larger in the female than in the male ; female gono- 

 phores somewhat more globular than the male, which are of an elongated oval form. 

 Oral tentacles of Actinula not developed at the time of its liberation. 



Colour. — Body of liydranths and peduncle and spadix of gonopliore.s rose colour; perisarc 

 straw colour. 



Development of Gonosome. — Observed from April to October. 

 Habitat. — Attached to rocks, stones, old shells, other hydroids, &c. 

 Bathymetrical distribution. — From Laminarian to deep-sea zones. 

 Locality. — British, Scandinavian, and Belgian shores. 



As long as naturalists confined themselves in their description of Hydroida to the dry peri- 

 sarc, or when, without neglecting the soft parts, they still failed to see that certain differences in 



