A. E. Verrill — New Actinians. 375 



Art. XLIII. — Descriptions of imperfectly known and new 

 Actinians, with critical notes on other species, Y ; by A. E. 

 Yerrill. Brief Contributions to Zoology from the Museum 

 of Yale College, No. LXII. 



Family Bunodactid^e. (Continued from p. 218.) 



Bunodactis inornata Yerrill. Figure 39. 



Actinia inornata Stimpson, 1855. 



Bunodes inornata Verrill, Proc. Essex Inst. Salem, Mass., vol. vi, p. 61, [27], 

 1869, pi. i, fig. 5. 



The type of this species is still preserved, though it has at 

 some former period been partly dried, and is, therefore, much 

 contracted, in a hemispherical shape. The tentacles are wholly 

 retracted. The upper part of the wall is closely covered with 

 rather large concave suckers, but they rather suddenly diminish 

 in size and become confused with the deep, vermiculate, 

 wrinkles on the lower half of the column, though some persist 

 to near the base. 



In section, there are 24 pairs of larger complete mesenteries, 

 including two pairs of directives. Alternating regularly with 

 these there are 24 pairs of smaller mesenteries, most of wmich 

 are incomplete, but are well developed, with a small but promi- 

 nent muscular pennon near the distal end, occupying a quarter 

 or less of the breadth. The larger mesenteries have strong 

 median muscular pennons, occupying about a third of their 

 breadth. All, or nearly all, the septa bear large gonads. The 

 tentacles, in transverse sections, show a stellate muscular layer, 

 due to the strong radial supports. 



The sphincter muscle is large, clearly defined, nearly circu- 

 lar in section. 



Hong Kong, at low water mark, in gravel. — Dr. Wm. 

 Stimpson. 



Some Actinians that incitbate their eggs externally. 



The next four species, described below, are remarkable for 

 the habit of carrying their relatively large eggs attached to the 

 body in special pits, where they are retained until hatched and 

 provided with tentacles. In these cases the egg develops 

 directly into an actinula. This habit was described by me in 

 1869 as occurring in two of these species, but it has not 

 attracted the attention of others to any great extent. I am 

 now able to add two other species, of large size, having the 

 same habit in a still more striking degree. They belong to 

 the Bunodacticlaz, but differ considerably in generic characters. 



