MAlllNE INVERTEBEATA OF GRAND MANAN. 37 



Piuall Aphrodites which arc found on muddy bottoms in the laminarian and coral- 

 line zones, are perhaps varieties of the young of this species, hut require farther 

 investigation. 



CiiUSTACEA. 

 PYCNOGONIDES. 



PrcxoGONON PELAGICUM, St., n. s. The legs are much shorter and stouter than 

 in P. Uflorale, and ai'e also without the projections at the joints which are seen in 

 the figures of that species. The surface is generally smooth and clean, without 

 prominent hairs, and it is of a uniform yellowish-brown color. Its diameter, or 

 the distance between the extremities of opposite legs, is three-fourths of an inch. 

 It was taken in 30 f., on a gravelly bottom, off Head TTarbor. 



PiioxiciiiLiDiU-U MAXiLLARE, St., n. s. Body slender, with a sharp conical papilla 

 on the back, just behind the origin of the mandibles; caudal projection short, but 

 very stout. Jaw-feet or mandibles comparatively large and strong, scarcely extend- 

 ing beyond the end of the blunt proboscis, and with the finger and thuml) curving 

 so as to touch each other only towards their extremities. Ovigerous feet slender, 

 except at the basal joint, which is very thick. They are long and slender, curving 

 in genuflexions as in Nymplion, and arise from the lateral projections supporting 

 the first pair of legs. The legs are long, smooth, without spines or hairs, and have 

 small subcheliform hands at their extremities, the fingers of which are very sharp 

 and slender. The color in life is blackish or sepia. Length of body, 0.13 in. ; of 

 a leg of the first pair, 0.53 in. Taken in tangled groups of a dozen or more, 

 attached to the under sides of stones at low water. 



Zetes SPiNOSA, St., n. s. One specimen only of this species was taken, which 

 occurred in the laminarian zone. It was hispid with minute hairs, especially on 

 the legs, and so covered with marine sordes that the parts were made out only with 

 great diCficulty. The diameter of this specimen is one-half an inch. The body is 

 short, and terminates posteriorly in a long, slender, sul)clavate anal tube, which 

 projects obliquely upwards. The clavate proljoscis is large, broad, and not so much 

 constricted at the base as in the species figured in Voy. en Skaudinavie, Laponie, etc. 

 The o%ngerous feet are long, pellucid, and flexible ; the joints being with difficulty 

 distinguished. Of the appendages between them and the prolwscis only two pair 

 were made out with certainty, of which those al)ove the proboscis were very short, 

 and those between it and the ovigerous legs almost filiform, and exceeding it a little 

 in length. On each of the first two joints of the legs above is a short acute spine. 

 The general color of the animal, as nearly as could be ascertained, is light l)i()wn ; 

 the proboscis being straw-colored or yellowish. 



Pallexe mspmA, St., n. s. Body short and broad, seeming wider than it really 

 6 



