Chap. IX. 



TABULAR VIEW. 



343 



E. iiulchella Ag. — Sarsia pulchella Forhcs, Nak. Med., PI. 6, fig. 3. 



— Bntish Seas (Forbes). 



E. turricula Ag. — Sarsia turricula 3IcCr., PI. 8, figs. 6-8. — Clmrles- 



ton, Soidh Carolina (McCradj). 

 E. nodosa J^. — Sarsia nodosa Busck, PI. 2, fig. 6. — Cormvall (Busch). 

 E. ochracea A. Ag. — Naushon, Buzsard's Bay (A. Agassiz).^ 

 Corymorpha Sars. — Ellisia Forbes. 



C. nutans Sars. See p. 2i2.— German Ocean (Sars); British Seas, 



Orhicy Islands (Forbes). 

 C. pendula Ag., p. 276, PI. 26, figs. 1-11. — Bag of Massachusetts, 



Naliant (Agassiz). 

 Steenstrupia Forhes. See p. 242.^ 



S. fritillaria Ag. — Coryne fritillaria Steenst., Generationsw., Tab. I. 



— Iceland (Steenstrup). 



S. rubra Forbes, Nak. Med., PI. 13, fig. 1. — British Seas (Forbes).— 



S. flaveola Forbes, Nak. Med., PI. 13, fig. 2, is, perhaps, only 



another state of S. rubra. 

 S. Hneata Leiick., Arch. Nat., 1856, PL 2, fig. 6. — iVTee (Leuckart). 

 Euphysa Forbes. 



E. aurata Forbes, Nak. Med., PI. 13, fig. S. — British Seas (Forbes). 

 Hybocodon Ag. 



H. proHfer Ag., p. 243, PI. 25. — Massachusetts Bag (Agassiz). 

 Sarsia gemmifera Forbes, Nak. Med., PI. 7, fig. 2, and Sarsia pro- 



lifera Forbes, Nak. Med., PI. 7, fig. 3, may also belong to this 



genus, or form another distinct group. 



sitive bulb are not concentrated in one mass, but 

 scattered through the whole swelling at the base 

 of the tentacles. There are also two rows of lasso- 

 cells on the surface of the spherosome, commencing 

 at the base of the chymiferous tubes, and running, 

 one each side of it, towards the abactinal pole. 



^ Ectopleura ochracea A. Ag. Spherosome of 

 uniform thickness from the circular tube to the 

 base of the digestive trunk. From this point the 

 outline tapers very gradually towards the abactinal 

 pole, giving a great thickness to this part of the 

 spherosome. The tentacles are short, carried tightly 

 curled, lasso-cells very numerous, and scattered ir- 

 regularly over their surface. Tliere is an accumu- 

 lation of light-yellow pigment-cells near the base 



of the digestive trunk, which is itself of a delicate 

 pink color. The pigment-cells of the sensitive bulb 

 are of a purplish-orange upon a yellow ground. 

 Height one quarter of an inch. — Naushon, Buz- 

 zard's Bay, September (A. Agassiz). 



^ By misprint the genus Steenstrupia bears the 

 authority of Sars, on p. 242, when it should be 

 Forbes. I suspect a mistake on the part of 

 Steenstrup in referring the free Medusa, represented 

 in the " Generationswechsel," PI. I. figs. 43, 44, 

 and 45, to the Hydroid represented fig. 41. His 

 free Medusa has the closest affinity with Hyboco- 

 don prolifer, which truly belongs to the Tubularidae, 

 while his Hydroid cannot be referred to this fam- 

 ily, as it has no coronal tentacles. 



