50 BULLETIN OF THE 



of hermit-crab (Sympagurus pidus Smith), remarkable for large bright red 

 patches on the basal part of its legs. 



This species may not be a true Urticina. It resembles certain species of 

 Sagartia, but no acontia were observed. 



Actinauge Verrill, gen. nov. 

 Type, A. nodosa, formerly Urlicina nodosa (MIjller) Verrill. 



Large actinians, with the tentacles and upper part of the body capable of 

 involution. Integument of body of two kinds ; that of the lower part is firm, 

 thick, and more or less coriaceous or parchment-like, with persistent, solid warts 

 or tubercles, usually in vertical rows, and sometimes partially covered with a 

 thin, chitinous epidermal coating ; that of the upper part of the body forms a 

 marginal, brighter-colored band, below the tentacles, where it is soft and lubri- 

 cous, secreting mucus abundantly, and rising into longitudinal ridges, crests, or 

 oblong tubercles, which run to and unite with the bases of all the tentacles. 

 The basal disk may be broad and flat, adherent, or it may be bulbous, clasping 

 mud, or it may ensheathe the branches of Gorgonias, etc. Tentacles long and 

 large, contractile. Lips with large folds and gonidial grooves. 



This genus, like Actinernus, has marginal prolongations of the wall, running 

 to and uniting with the outer bases of all the tentacles, but in Actinernus there 

 is no specialized submarginal zone, and the body is not verrucose. 



It is also closely allied to Urticina Ehr. (Tcalia Gosse), of which the type 

 is U. crassicornis. But the latter has the integument soft and lubricous over 

 the whole body, and there is no marked specialization of the submarginal zone; 

 the tubercles, when present, are small, not much thickened, and of the natui-e 

 of true suckers for attaching foreign substances; and when not in use may so 

 contract as to disappear entirely; the submarginal zone is nearly smooth, with 

 a definite upper margin, and there are no vertical ridges running in on the 

 disk to join the bases of the tentacles, as in this genus and Actinernus. 



Actinauge nodosa (Fabr.) Verrill. 



Actinia nodosa O. Fabricius, Fauna Grbnlandica, 1780, p. 350. 

 ? Actinia digitata (pars) MiJLLER (? non Gosse). 



Urticina nodosa Verrill, Anier. Jour Sci., VL, 1873, p. 440; VII., 1874, pp. 413, 

 500, pi. 7, fig. 7 ; XXIIL, 1882, pp. 224, 315. 

 S. L SiMTH & 0. Harger, Trans. Com. Acad., III., 1874, pp. 11, 54. 



Plate VI. Figs. 6, 7, 8, 8 a. 



This large species is very abundant in deep water, along our coast, and 

 northward to the Grand Banks. 



It varies greatly in appearance, especially when contracted in alcohol. It is 

 capable of contracting to a much greater e.xtent than U. callosa and Actinernus 

 nobilis, and when preserved, the upper part of the column is generally strongly 



