12() PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 
Gebia affinis Say. Smith, Inv. V. S., p. 549, 1874. 
This species was not collected at Provincetown, but was obtained from 
the flats at Wellfleet by Prof. H. E. Webster, in 1879, and seems to 
be abundant there. This is the first time it has been recorded from the 
north side of Cape Cod. 
Crangon vulgaris Fabr. Smith, Inv. V.S., p. 550, 1874; Trans. Conn. Acad., vol. 
Ws DP. OSp Lore. 
Very common along the shore. 
Paleemonetes vulgaris (Say) Stimp. Smith, Inv. V.8., p. 550, 1874; Trans. Conn. 
Acad., vol. v, p. 88, 1879. 
Only a very few specimens of this species were collected, although 
it was diligently sought for. These were found in the eel-grass in front 
of the town and off the dike. 
SCHIZOPODA. 
Mysis stenolepis Smith, Inv. V. S., p. 551, 1874; Trans. Conn. Acad., vol. v, p. 103, 
1879. 
A few specimens only were collected; they were from the eel-grass in 
front of the town. 
AMPHIPODA. 
Orchestia agilis Smith, Inv. V.S., p. 555, 1874. 
Very abundant on the beaches, under dead sea-weeds, ete. 
Talorchestia longicornis (Say) Smith, Inv. V. S., p. 556, 1874. 
Very abundant on both the outer and inner beaches, burrowing 
deeply into the sand, about high-tide level. 
Talorchestia megalopthalma (Bate) Smith, Iny. V. S8., p. 556, 1874. 
Associated with the preceding. 
Hyale littoralis (Stimp.) Smith, Inv. V. S., p. 556, 1874. 
Collected in 1879; and also in 1872, by Smith and Harger. 
Calliopius leeviusculus (Kroy.) Boeck. Smith, Inv. V. S., p. 557, 1874. 
Found upon the beach at Long Point among stranded sea-weeds. 
Gammarus locusta (Linné) Fabr., Systema Entomologia, 1775. Gould, Inv. Mass., 
ed. I, p. 334, 1841. Smith, Bull. U. S. Nat. Mus., No. 15, p. 139, 1879.—G@. or- 
natus Edwards, Ann. des Sci. Nat., tome xx, p. 367, 1830; Hist. Nat. des 
Crust., tome iii, p. 47, 1840. Smith, Inv. V. S., p. 557, 1874. 
Only a few specimens of small size were obtained from the eel-grass 
in various places. The scarcity of this species at Provincetown is prob- 
ably due to the absence of rocks and of much rock-weed, which together 
form its favorite grounds. A comparison of European with American 
specimens has enabled Professor Smith to establish the identity of G. 
ornatus and G. locusta. 
