38 MARINE INVERTEBRATA OF GRAND MANAN. 



is, and almost orbicular, from the close approximation of the basal joints of the 

 legs. The legs are very thick at their bases, but taper gradually to slender ex- 

 tremities, Avhere they are provided with elongated, subcheliform hands. The fii'st 

 two joints of each are provided on their outer edges with a semicircle of sharp 

 spines, which projects over the succeeding joint in an imbricated manner. This 

 arrangement gives the body the appearance of being surrounded by two concentric 

 spinous ridges. The legs are also very hispid, the hairs being short, compressed, 

 spine-like, and arranged in three or four longitudinal rows ; the interspaces being 

 smooth. The ovigerous feet equal in length about three-fourths that of the true 

 legs, and in my specimens had two rounded masses of eggs attached to their basal 

 joints. The proboscis is very short, and tapers nearly to a point at its extremity. 

 The mandibles are large and strong, extending much beyond the extremity of the 

 proboscis, and curving downwards. The finger and thumb are small, and tipped 

 with a hard, glossy, mahogany-colored enamel. The oculiferous knob is prominent, 

 with a black summit divided by a cross into four minute eye spots. Finall}^, the 

 caudal process is small, but prominent, smooth, and glossy, and projects nearly 

 perpendicularly upwards. Tlie color of the body and legs, beneath the dark brown 

 spines and hispidities, is light yellowish. The length of the body^ is 0.14 in.; of 

 one of the legs, 0.37 in. It was taken among Ascidkv callosa', in deep water. 



Nymphon grossipes, Kroyer. This large and fine species is by no means uncom- 

 mon here in the coralline zone. It is generally found creeping among the polypi- 

 doms of Tubularice and other hydroids, upon the polypes of which it probably 

 feeds. In life, it is of a pale wine-yellow color externally, the stomach being often 

 of a light rose tint, varying in depth so as to give the legs a distantly annulated 

 appearance. Specimens in egg occurred during the first week in September. The 

 figure given by Kroyer in Voy. en Skand., Lap., etc., does not apply to our speci- 

 mens in every particular, but there can be no doubt of the identity of our species 

 with the Pijcnogonum grossipes of Otho Fabricius, Fauna Gronl., p. 229. The 

 curious six-legged young of this animal, so different from the adult, occurred in 

 August in considerable numbers parasitic on Qoniasier 2)hrygiana. These were a 

 quarter of an inch in diameter. 



EPIZOA. 



Lern^a branchialis, (?) Lin. A few specimens were found fixed in the flesh 

 of the neck, in young cod-fishes. 



Caligus piscinus, Gould, Inv. Mass., 340; Latr., Hist. Nat. des Crust. (?) 

 Found in great abundance on the surface of the Halibut. 



CIRRIPEDIA. 



Balanus geniculatus, Conrad, J. A. N. S., vi. 265. Gould, Inv. Mass., 14, pi. 

 i. f. 9. This species is identical with one of those of Northern Euro^^e, as I have 



• The length of the body in this species and the others herein described, is talven from the base of the 

 proboscis to the extremity of the caudal process. 



