CRUSTACEA. 115 



PHYLLOPODA. CLADOCERA. 



LYNCEIDAE. 



Pleuroxus acutirostris Birge, Trans. Wisconsin acad. sci., 

 1876-77 (1878), vol. 4, p. 99 [23], pi. 2, lig. 15. 



Mass. — Southampton ; Easthaiupton. Vei-y rare. 



382. MoNOSPiLus TEXuiROSTRis (Fisfher). 



Lynceus ^g;*;a>os<m^ Fischer, Mem. acad. Imper. sci. St.-Peters- 

 bourg par divers savants, 1848, vol. 6, p. 193, pi. 10, tig. 3. 

 " IN DEM Bereiche VOX Seroiefsko.je." Bull. soc. nat. imp, 

 Moscou, 1854, vol. 27, pt. 1, p. 427, i)l. 3, tigs. 7-10. 



Mass. — Easthampton. 



383. ACROPERUS LKUCOCEPHALUS (Kocll). 



Lynceus leucocephalus Koch, Deutschlands Crustaceen, Myria- 

 poden und Arachniden, 1841 (?), heft 36, pi. 10 and correspond- 

 ing text. " In DEM GRABEN DES BRUDERAVEHR NAHE BEI REGENS- 

 BURG." 



Ao'operus leucocephalus Ilerrick, Twelfth ann. rept. geol. & 

 nat. hist. snr. Minnesota, 1884, p. 81, pi. E, fig. 5, pi. I, tig. 9. 



Mass. — Cambridge (common) ; Easthampton. 



384. Camptocercus macrurus (O. F. Miiller). 



Lynceus macrourus O. F. Miiller, Zool. Dan. prod., 1776, p. 

 199. Exact locality not given. 



Camptocercus macrourus Baird, Nat. hist. Brit. Entomostraca, 

 1850, p. 128, pi. 16, fig. 9. 



Mass. — Cambridge. Not common. 



POLYPHEMIDAE. 



385. Pt)LYPHEMis PEDicuLus (Liune). 



Monoculus pediculus Linne, Syst. nat., ed. 10, 1758, vol. 1, p. 

 635. "Habitat in Europae aquis dulcibus." 



