254 BIOLOGICAL SURVEY OF 



Hyalella Smith 

 H. AZTECA (de Saussure). {knickerbockeri Kunkel, 1918, 

 p. 129, fig. 36.) Found in fresh water. Sargent Mountain 

 Pond, heath south of Salisbury Cove, Lake Wood, Witch Hole 

 Pond. 



Photidae 

 Photis Kroyer 

 P. REiNHAEDi Kroyer. (G. 0. Sars, 1895, p. 569, pi. 202.) 

 Taken chiefly on mud bottoms, in 20 to 90 feet of water. Sta- 

 tions : D 1, 4, 32, 35, 45, 48, 93, 104, 112. 



Leptocheirus Zaddach 

 L. piNGuis (Stimpson). (Kunkel, 1918, p. 144, fig. 42.) 

 A common species, almost always found on bottoms contain- 

 ing mud, from low water to 330 feet. Stations : 44 dredging 

 stations and S 12, 20 ; P lOB. 



Amphithoidae 



Amphithoe Leach 



A. RUBRicATA (Moutagu). (Gr. 0. Sars, 1895, p. 579, pi. 



206.) Usually associated with green algae (see Skutch, 1926), 



but has been dredged on hard bottoms to 220 feet. Stations : 



D 3, 15, 87, 104, 136, 148 ; S 1-4, 8, 12, 14, 24, 39. 



Jassidae 

 IscHYROCERUs Kroycr 

 I. ANGuiPEs Kroyer. (G. 0. Sars, 1895, pp. 588, 589, pis. 209, 

 210, fig. 1.) An extremely variable species, usually associated 

 with algae on hard bottoms, from low water to 100 feet. Sta- 

 tions: D 3-5, 10, 12, 20, 27, 68, 87, 94; S 2, 12. 



Corophiidae 



Ericthonius H. Milne-Edwards 



E. DiFFORMis H. Milne-Edwards. (G. 0. Sars, 1895, p. 604, 



pi. 216, fig. 1.) This species inhabits tubes attached by one 



side to other objects, usaully on hard bottom, depth 20 to 



300 feet. Stations : D 6, 9, 12, 18, 20, 27, 68, 75, 94, 96, 104, 120. 



