TAPMANTAN HYDROZOA — RRIGr.S. 287 



pt. ii., Snpyil. Rep., viii., — Hydroida, 1904, p. ll'J. /(/., 

 Hartlaub, Zoul. Jaliib. .Teiia, Suppl. vi., iii., 1905, p. 611, 

 tijjfs. J-', K^. /(?., Billaid, Aim. Sci. Nat., Zool., (n.s.), xi., 

 1910, p. 8. /'/., Ritcliie, Mem. Austr. Mus., iv., 16, 1911, 

 p. 811. 



Ilaleciiiin (jnu-lle, Bale, Proc. Linn. Soc. N. S. Wales, (2), iii., 

 lS88,"p- 759, pi. xiv., figs. 1-3 ; LL, Bale, Proc. Roy. Soc. 

 Vict., vi., 1894, p. 99. Id., Jiiderholm, Ark. for Zool. 

 Stockholm, i., 1903, p. 266, pi. xii., tigs. 2, 3. 



Ilitleriiou jKimilKDi, Bale, Proc. Liiin. Soc. N. S. Wales, (2), 

 iii., 1888, p. 760, pi. xiv., figs. 4, 5. Id., Marktanner- 

 Tiiriieretsclier, Ann. K. K. Hofmus. Wien, v., 1890, p. 

 218, pi. iii., tig. 22. 



Several fiagmeiitary colonies growing on a spine of an 

 Ecliinoid are referred to this species. The stem is only very 

 weakly fascicled at the base. The hydrorhiza forms a creep- 

 ing stolon. The margins of the hydrothecae are scarcely 

 everted, and in this respect tliey resemble those tigured by 

 Allman. The specimens, however, are much smaller than the 

 four inch higli forms desciibed bj- that author ; but they agree 

 in heiarht with Bale's mature colonies from New South Wales. 

 Miss Thornely's immature Ceylon examples from the Gulf of 

 Maiiaar are only half an inch high. 



DtDieiisiuiis : — 



Stem inteinode, length ... ... ... 0-61-0-71 mm. 



Stem internode, diameter ... ... ... 0-15-017 mm. 



Hydrotheca, depth 08-0-10 mm. 



Hydrotheca, diameter at mouth ... ... 012-014 mm. 



Hydrotheca, diameter at base... ... ... 007-008 mm. 



Digtribidioii. — Previously recorded from Station 145, off 

 Marion Island, 50 fathoms (Allman) ; Station 312, Port 

 Famine, Patagonia, Lat. 53° 37' 30"S., Long. 70° 65'W., 9 

 fathoms (Allman) ; Port Stef)hens, Port Jackson, Bondi, New 

 South Wales (Bale) ; Gulf of Manaar, Ceylon (Thornely) ; 

 Station 44, off Coogee, New- South Wales, 49-50 fathoms 

 (Ritchie). 



