INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 557 



Laphysttus Sturionts Kroyer. (p. 457.) 



Nat. Tidsskrift, vol. iv, p. 157, 1842. Darivinia compressa Bate, Report Brit. Assoc, 

 1855, p. 58 ; Catalogue Arnphip. Crust., Brit. Mus., p, 108, PI. 17, fig. 7 ; Bate 

 aud Westwood, Brit. Sessile-eyed Crust, vol. i, p. 184, wood cut. 



A parasitic ampliipod, apparently quite identical with this species of 

 Europe, was found in the mouth of a goose-fish (LopMus Americanus) 

 taken in Vineyard Sound. A species, apparently the same, was also 

 taken from the back of a skate (Baia lewis) in the Bay of Eundy the 

 past summer. It is readily distinguished by its broad depressed form, 

 and by having the third to fifth pairs of legs very stout and their distal 

 segments forming powerful talon-like claws, while the first and second 

 pairs are small and slender. 



Calliopius ljeviusculus Boeck. (p. 315.) 



Crust. Arapbipoda borealia et aretica, p. 117, 1870. Amphillioe la-cinscula Kroyer 

 Gronlands Amfipoder, p. 53, PI. 3. fig. 13, 1838. Calliope la'vinscula Bate, Cata- 

 logue Arnphip. Crust. Brit. Mus., p. 148, PI. 28, fig. 2, 1862 ; Bate aud Westwood, 

 op. cit., vol. i, p. 156, wood cut. 

 Vineyard Sound and northward to Greenland, Northern Europe, and 

 Spitzbergen. 



PONTOGENEIA INERMIS Boeck. ([). 452.) 



Op. cit., p. 114, 1870. Amphillioe biennis aud crenulata, Kroyer, Gronlands Am- 

 fipoder, pi). 47, 50, PI. 3, figs. 11, 12, 1838. Iphimedia vulgaris Stimpson, 

 Marine Invertebrata of Grand Manan, p. 53, 1853. Atylus inermis, crenulatus, 

 and vulgaris Bate, Catalogue Arnpbip. Crust. Brit. Mus., pp. 138, 139, 142, PL 27, 

 figs. 5, 6, 1862. Atylus vulgaris Packard, Memoirs Boston Soc. Nat. Hist., vol. 

 i, p. 298, 1367. (Not Atylus (ParampMtoe) inermis Packard, loc. cit., p. 298, PL 

 8, fig. 3.) 



Taksn at the surface in Vineyard Sound, in March, by Mr. V. X. Ed- 

 wards. It is abundant, in company with Calliopius Icevimculus, about 

 the Bay of Eundy in pools left by the tide, and ranges north to Labra- 

 dor and Greenland. 



Gammarus ornatus Edwards. Plate IV, fig. 15. (p. 314.) 



Anuales des Sci. nat., tome ss, 1830, p. 3S7, PL 10, figs. 1-10 ; Hist. nat. des 

 Crust., tome iii, p. 47 ; Bate, op. cit., p. 212, PL 37, fig. 8. Gammarus locusta 

 Gould, op. cit., p. 334. Gammarus pulex Stimpson, Marine Invert. Grand Manan, 

 p. 55. 



New Jersey to Greenland. 



Gammarus annulatus Smith, sp. now (p. 314.) 



Anterior margin of the head produced each side beneath the anten- 

 nulse into a truncated lobe, which extends farther forward than in G. 

 ornatus; eyes scarcely reniform, less elongated than in G. ornatus, and 

 their lower margins not reaching, by considerable, the anterior border 

 of the truncated lobe. Antennae longer than the antennulse ; the ulti- 

 mate segment of the peduncle longer than the penultimate ; the flagel- 

 lum much more slender, the segments more elongated and with fewer 

 hairs, than in G. ornatus. Hands of the first pair of legs more elongated 

 than in G. ornatus, and the palmary margins very oblique. Propodus in 



