246 BIOLOGICAL SURVEY OF 



Superfamily IDOTHEOIDEA 



Idotheidae 

 Idothea J. C. Fabricius 



I. BALTiCA (Pallas). (G. 0. Sars, 1897,p. 80,pl. 32.) Taken 

 near low water, among heavy growths of algae. Stations: 

 S 7, 25, 35, 36, 39, 41. 



I. PHOSPHOREA Harger. (Eichardson, 1905, p. 367, figs. 398, 

 399.) This species is very close to I. granulosa H. Rathke, 

 but may be distinguished by the broader urosome and concave 

 frontal margin. Taken on rock bottom, from shore to 90 

 feet. Stations: D104; S 12, 43. 



Edotea Guerin-Meneville 

 E. triloba acuta Richardson comb. nov. (Richardson, 1905, 

 p. 395, figs. 439, 440.) A rare form, on mud, in 36 to 130 

 feet of water. Stations : D 1, 10, 29, 35, 38, 46, 62 ; P lOB. 



Superfamily ASELLOIDEA 



Janiridae 

 Jaera Leach 

 J. ALBiFRONS Lcach. {marina G. 0. Sars, 1897, p. 104, pi. 

 43.) Found only near low water, chiefly under stones. Sta- 

 tions : S 2, 3, 6, 8, 12, 25, 39, 41. 



Munnidae 

 MuNNA Kroyer 

 M. FABRicii Kroyer. (G. 0. Sars, 1897, p. 108, pi. 45, fig. 2.) 

 Taken on muddy bottoms, in 10 to 70 feet of water. Sta- 

 tions : D 46, 59, 94. 



Pleurogonium G. 0. Sars 



P. RUBicuNDUM (G. 0. Saxs). (G. 0. Sars, 1897, p. 113, 

 pi. 47, fig. 2.) On mud, in 20 to 50 feet of water. New to 

 New England. Station : D 32. 



P. inerme G. 0. Sars. (G. 0. Sars, 1897, p. 114, pi. 48, 

 fig. 1.) Found on a mud and shell bottom, in 70 feet of 

 water. Also new to New England. Station : D 46. 



