68 
S. 1. Smith — Crustaceans of the Atlantic Coast. 
The spines at the tip of the telson are normally of the same num- 
ber and similar to those of H. Fabricii , and the terminal angle is 
usually very obtuse and rounded (Plate IX, figure 8). One specimen, 
however, out of the twenty-one in which the tip of the telson was 
examined, a female, 39 ram long, from Casco Bay, has the tip of the 
telson (Plate IX, figure 9) acute and armed with three small ciliated 
spines in the middle in place of two, so that there are seven spines 
in all. In other respects this specimen is perfectly normal and indis- 
tinguishable from ordinary individuals. Similar variations are 
noticed under H. polar is and H. pusiola and well illustrate the diffi- 
culty of stating accurately the specific characters in this genus. 
Specimens taken among algte and eel-grass in Casco Bay were, in 
life, translucent, slightly tinged with greenish brown, and without 
brightly colored markings of any kind. 
Hippolyte spinus White. 
Cancer spinus Sowerby, British Miscellany, p. 47. pi. 23, 1805. 
Alphceus spinus Leach, “Edinburgh Encyclopedia, vii, p. 431, 1813-14” (Miers), 
American edit., vii, p. 271 ; Transactions Linnean Soc. London, xi, p. 347, 1815. 
Hippolyte Sowerbcei Leach, Malacostraca Podophthalmata Britannias, pi. 39, 1817. 
Hippolyte spinus White, List Crust. British Museum, p. 76, 1847. — Bell, History of 
British Crustacea, p. 284 [1 847 ?] 
Hippolyte spina Stimpson, Proceedings Acad. Nat. Sci. Philadelphia, xii, p 34 (103), 
1860; Annals Lyceum Nat. Hist. New York, x, p. 126, 1871. 
Massachusetts Bay !, off Salem, 1877 ; 20 to 30 fathoms, gravel 
and rocks, common ; 33 fathoms, sand and mud ; 35 fathoms, mud 
and clay nodules, abundant ; 33 fathoms, sand and mud ; 48 fathoms, 
soft mud. Gulf of Maine !, off Cape Ann, 1877, 50 fathoms, mud, 
gravel and rocks; and 90 fathoms, soft mud, common. Abundant 
on Stellwagen’s Bank!, 29 fathoms, rocky, and on Jeffrey’s Ledge !, 
24 and 33 fathoms, gravel and stones, 1873. Near the Isles of 
Shoals !, 25 fathoms, rocky, abundant, and between the Isles and 
Cape Ann !, 27 to 36 fathoms, mud and rocks, 1874. Cashe’s Ledge !, 
Gulf of Maine, 27 and 40 fathoms, gravel and rocks, very abundant ; 
and a little south of the Ledge, 52 to 90 fathoms, rocky, 1873, 1874. 
Casco Bay !, 1873, among stones, at low- water mark !, on Ram Island 
Ledge, and common in 10 to 35 fathoms, on rocky, gravelly and 
shelly bottoms ; taken also in 9 fathoms, mud, oft* Fort Georges, 
Portland Harbor. Verv abundant in the Bay of Fundy !, 1864, 1868, 
1870, 1872, 1876, on all kinds of hard bottoms in 5 to 40 fathoms; 
taken also, in 1872, off Whitehead, Grand Menan, 40 to 50 fathoms, 
gravlley bottom ; Avest of Grand Menan, 50 to 55 fathoms, gravel ; 
