MARINE INVERTEBRATA OF GRAND MANAN. 



POLYPI. 



ALCYONID^. 



Alcyonium DiGiTATU^r, Lin. All the specimens obtained wore very small, the 

 lamest scarcely an inch in length, and not divided into lobes. Found attached to 

 small pebbles on shelly bottoms in 10-30 fathoms. 



ACTINIADiE. 



Actinia marginata, Le Sueur, J. A. N. S., i. 172. On rocks at low-water mark, 

 of a very large size. 



A. carneola, St., n. s.. Fig. 1. Very small, about four-tenths of an inch in 

 diameter ; mouth protruding far upwards on the broad disk, on the edge of which 

 are the tentacula, alternating in two approximated rows, there being eighteen in 

 each row. On the disk, above the base of each of the larger upper tentacula, are 

 two prominent white spots, one above the other ; while the lower tentacula have 

 one spot only at their inner bases. This species is of a light flesh or salmon color. 

 It was dredged in 35 fathoms on the Hake Ground, off the north-east shore of 

 Grand Manan. The specimens were attached to dead valves of P^ten, and some- 

 times to the test of Ascidia caUosa, or to small pebbles. 



A. OBTRUNCATA, St., n. s. Body short, with a broad flat disk, on which, between 

 the small mouth and the margin, are placed the tentacula; which are short, very 

 blunt at their extremities, as if cut off, usually equidistant, not very numerous, and 

 arranged alternately in four or five very indistinct rows. Sides smooth and clean, 

 with "few porous warts, which can seldom be perceived. Color dark purplish, 

 lighter on the disk, with broad streaks of crimson which meander among the bases 

 of the tentacula. It is found not unfrequently at low-water mark, attached to 

 stones in clear water, but is most abundant in the laminarian zone. It approaches 

 A. crassicornis, especially in the arrangement of the tentacula, which are, however, 

 not pointed. It wants also the prominent rim of that species. 



A. C0RIACEA,(?) Johnst., Brit. Zooph. A few specimens of an Actinia were pre- 

 sented to me by H. R. Storer, Esq. (which he took at low water among the outer 

 islands), of a species which I did not myself find. It is conical, with the sides 

 covered with small shells and pebbles, which are secured by the strong wart-like 

 suckers. The tentacula are rather long, and not very numerous. Having never 

 seen it alive, I am by no means certain of the accuracy of the above identification. 



A. DiANTHcs,(?) Johnst., Brit. Zooph. A fine specimen, belonging probably to this 

 beautiful species, was dredged in 50 fathoms on the "gravelly bottom," a fishing- 

 ground situated about eight miles off Whitehead. It was unfortunately lost, owing 

 to the roughness of the weather at the time, so that it is not yet accurately determined. 



A. siPUNCCLOiDES, St., n. s.. Fig. 2. Body greatly elongated, covered with a thin 

 brownish epidermis, with eight narrow longitudinal white lines, dividing the body 

 at the anterior extremity into eight equal lobes when contracted. Tentacula 



