312 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Phryxus abdominalis Liljeborg (Kroyer). 



Bopyrus abdominalis Kroyer, Nat. Tidsskr., vol. ii, pp. 102, 289, pis. i, ii, 1840; 

 Monog. Frerast. Slsegten Hippolyte's nordiske Arter, p. 263, 1842 ; Voy. 

 en Scand., Crust., pi. xxix, fig. 1, 1849. 



Phryxus Hippolytes Rathke, Fauna Norwegens, p. 40, pi. ii, figs. 1-10, 1843. 

 Phryxus abdominalis LiljeLorg, (Efvers. Kongl. Vet.-Akad. Forh., ix, p. 11, 1852. 

 Steenstrup and Liitken, Vidensk. Meddelelser, 1861, p. 275 (9). 

 Bate and West wood, Brit. Sessile-eyed Crust., vol. ii, p. 234, 1868. 

 Norman, Rep. Brit. Assoc., 1868, p. 288, 1869; Proc. Royal Soc., London, 



vol. xxv, p. 209, 1876. 



Buchholz, Zweite deutsche Nordpolfalirt, p. 287, 1874. 

 Metzger, Nordseefahrt der Pomm., p. 286, 1875. 

 Miers, Ann. Mag. Nat. Hist., IV, vol. xx, p. 65 (15), 1877. 

 Smith in Harger, Proc. U. S. Nat. Mus., 1879, vol. ii, p. 158, 1879. 



Massachusetts Bay!, off Salem, on Pandalus borealis, Hippolyte spinus, 

 and H. securifrons, 48-90 fathoms, soft mud, August 13 and 14, 1877 ; 

 also, on Pandalus Hontagui, 35 fathoms, mud and clay nodules, Au- 

 gust 10, 1877. Cashe's Ledge !, Gulf of Maine, on Hippolyte pusiola, 

 27 and 39 fathoms, rocky, September 5, 1874. Halifax !, Nova Scotia, 

 onHippolytepusiola, 18 fathoms, fine sand, September 4, 1877 ; also, on 

 H. spinus. About 30 miles south of Halifax !, on Hippolyte securifrons, 

 100 fathoms, fine sand, September 6, 1877. 



Grinnell Land, in north latitude 79 29' ; and " Discovery Bay," north 

 latitude 81 44' (Miers). Greenland (Kroyer et al.). British Islands 

 (Norman et al.}. Scandinavian coast ! (Liljeborg et al.). Spitzbergen 

 (Miers). 



Dajus Mysidis Kroyer. 



Dajus Mysidis Kroyer, Voy. en Scand., Crust., pi. xxviii, fig. 1, 1849. 

 Liitken, Crustacea of Greenland, p. 150, 1875. 



? G. O. Sars, Arch. Math. Nat., B. ii, p. 354 [254], 1877 ("D. Mysidis?"). 

 Smith in Harger, Proc. U. S. Nat. Mus., 1879, vol. ii, p. 158, 1879. 

 Bopyrus Mysidum Packard, Mem. Bost. Soc. Nat. Hist., vol. i, p. 295, pi. viii, 



fig. 5, 1867. 



f Leptophryxus Mysidis Buchholz, Zweite Deutsche Nordpolfahrt, p. 288, pi. ii, 

 fig. 2, 1874. 



Labrador (Packard). Greenland (Kroyer, Buchholz). ? Off west 

 coast of Norway (G. O. Sars). 



Bopyms, species. 



Bopyrus Leidy, Proc. Acad. Nat. Sci., 1879, pt. ii, p. 198, 1879. 

 ? Smith, Trans. Conn. Acad., vol. v, p. 37, 1879. 



A species of Bopyrus is mentioned by Dr. Leidy as " a parasite of 

 the shrimp, Palcemonetes vulgarls," occuriug in the summer of 1879, at 

 Atlantic City, N. J. 



III. ASELLID^. 



Antennae elongated with a multiarticulate flagellum ; legs ambulatory 

 or prehensile, not strictly natatory ; pleon consolidated into a scutiform 

 segment, bearing terminal uropods, which may be nearly obsolete. 



This family is represented on our coast by four species belonging to 



