HYDKOIDS (>F THE V>"OODS HOLY. REGION. 



357 



Halecium halecinum (Linn.). Fig. 50. 

 (Sfftulai'ia hull-etna Linn., Syst. Nat., p. l:i08. ) 



e. Colony attaining a height of 6 to 10 inches, erect, rigid; stein fascicled, pinnately 

 branched, internodes short. Hydrophores on lung trumpet-shaped pedicels, margins frequently 

 reduplicated. 



(I'liiiiixniiii: Female gonangiu in rows on upper side of branches, obconic in outline, with the 

 aperture on one side of the truncated top, surrounded by a collar-like rim surmounted by a pair of 

 hydrauths. Male gouophores slender, oblong-ovate. 



DixtriliiitSoii. Abundant throughout the Woods Hole region, growing on shells, stones, etc., in 

 shallow water. 



Halecium articulosum Clark. Fig. 51. 

 (Tr;m>. Conn. Aeml. <>!' Sri. , vol. in, |>. (;:>.) 



e. Colony sometimes attaining a height of almost 2 feet; stem fascicled, branches very 

 long and slender, the ultimate branchlets being pinnately arranged like those of the family 1'lu /- 

 Im-iiln: Hydrophone sessile, alternate, borne on the broadened distal ends of the almost triangular 

 inteniodes. Ilydranths very large, with about 20 tentacles. 



50. Ifali i-iii in liiilerinam (Linn.). 

 Gonangium bearing Hytlranths. 



51. Halrr/ii/n <(i-ti/-iilnxn)n. ( 'lark. 

 A. Hydranth (enlarged). 



inn Hineks. 



<ln<jsom.e. Female gonangia obovate, with a latero-terminal aperture. Male gonangia long, 

 slender, subeylindrical. 



Distribution. Long Island Sound (Ferrill). The gigantic specimens referred to were secured by 

 the Fi*li ll<i !<!;, station 7051, lat. N. 40 46'; long. W. 70 43'. Depth 31 fathoms. The largest specimen, 

 and it is probably the largest known specimen of the Hukmlsr, is now in the U. S. Fish Commission 

 collection at Woods Hole. 



Halecium tenellum Hineks. Fig. 52. 

 (Ann. and Mug. of N'at. Hist., 3d. series, vol. vm, p. 252.) 



Trnphomme. Colony very small, not over half an inch in height; stem not fascicled, delicate, 

 irregularly geniculate; branches straggling, irregular; internodes very long and irregularly annulated. 

 Hydrophores borne on very long, tubular pedicels, irregularly arranged. 



Gonomme. Gonangia borne at origin of pedicels, very large, oblong-ovate in outline. 



Diiti-!lnit!i)ii.\ find this species mentioned in my notes as occurring at Woods Hole, but the 

 specimen seems to have been lost. The figure is from an English specimen. 



