412 TUBULARIA CALAMARIS. 



portion exceeded by the entire height ; about twenty proximal and fifteen distal 

 tentacles ; diameter of proximal circlet from tip to tip of the tentacles, when extended 

 in fidl-sized specimens, about two lines. 



GONOSOME. — GoNOPiiORES (male)^ borne on very short branching peduncles 

 forming erect clusters, with usually about three gonophores in each cluster ; summit 

 of gonophore with four rather large conical tentaculiform tubercles. 



Colour. — Hydranth scarlet, cociiosarc reddish yellow, perisarc liglit straw colour, spadix 

 scarlet. 



Development of Gonosome. — Autumn. 

 Habitat. — On exposed rocks in the sea. 

 Batlii/metrical didrihution. — Lamiuarian zone. 

 Locality. — Kinsale Harbour, Ireland, G. J. A. 



I obtained Tahularia Immilis during the autumn attached to rocks close to the level of 

 low-water spring tides near the mouth of Kinsale Harbour. It is a very elegant little hydroid, 

 resembling Tubularia Bellis in its mode of growth and in the shortness of its gonophore clusters, 

 but is at once distinguished from this species by the absence of distinct annulation, and by the 

 smaller size and less appressed form of its hydranths. 



*^* 10. TuBTJLAUiA CALAMARIS, Van Bencdeii. 



Tubularia calamaris, — Van Benedeu, Recherches sur I'Embryogeuie des Tubulaires, p. 44 



(exclusive of synonymes), pi. i, figs. 1 — 6 ; Recherches 

 sur la Faune littorale de Belgique, p. Ill (exclusive of 

 synonyraes). 



Thamnocnidia CALAMARIS, — Aycissiz, Contr. Nat. Hist. U. S., vol. iv, p. 343. 



TROPHOSOME. — Hydrocaulus attaining a height of about two inches, simple 

 and straight towards the summit, tortuous and irregularly ramified at the base, with 

 the tubes here united to one anotlier, so as to form a cluster ; perisarc annulated at 

 the base. Htdraxtus with about thirty tentacles in the proximal circlet, and about 

 twenty in the distal. 



GONOSOME. — Gonophores borne on short erect peduncles ; summit crowned 

 with four well-developed conical processes; walls of gonophore with longitudinal 

 contractile rib-lilie bands. 



' All tlie specimens e.xainined were male. 



