THE OSTRACODA 



84 (83) Shell plain, with small i)uiicta. Abdomen with two ■ 

 processes ^ypria {Cypria) opOuilmi<a ] 



Lcnglh 0.56 to o.Oo mm , 

 mm., widlho.jjloo. t'>mr; 

 ik'ar Ijrown, with •!. 

 riorlyan<liK)Sli-rii.rl\ 

 Natatory sotac vcr\ 

 terminal tiaws liy n. 

 of the antrnna. 1(. 

 lonK as widi-. Suri 

 river chanmis ami 

 l'cl)ruary to OitoUr 



and ditches where there i:* Utile or i^ . fac- 

 tion. Georgia, Illinois MinnrtoU. thrf •■■ 



Yu.. ijs^, 

 Cypria (Cypria) opikalmica (4) «vWr rirw. X m. 

 (b) Dorsal view; (o Furci. X I5T|; (/) Fmit. 

 X 100. 



85 (86) Shell clear to brownish yellow, with a few scattered punrla. 



Cypria (Cypriu) obcsa Sharpc iSg;. 



Length 0.78 mm., hcixht 0.48 mm , width 



0.33 mm. Plump. Furi n ' ■ ' ■ - -, 



times as long as wide, it 



times width of ramus fron. 



and as long as the terminal st t-i \\Ac% i.L_,-^^ 



mon. In tow of sandy bkc »horr, M*y 



Illinois. 



Fic. ia8s. 

 Cypria (Cypria) obesa. («) Doml vim 



(6)Furca; (r) Maxillary palp* o( auk; Id) >*c.-*ti 



leg. 



86 (85) Shell white, smooth, and shining, with numerous almost confluent 



puncta Cypria {Cypria) mons Chambers 1877. 



e Length 0.70 mm. A douhtful form, not well described 



\ X" ^ Colorado, Mt. Elbert. Altitude 1 1. 000 fert 



) ( \ F.o. ..sr, 



Ct V Jh Cypria [Cypria) mons. (j) Dorsal \-iew. u»>^..W %«•». X ift. 



^ ^^ (.Alter Chambers 



87 (88) 



Left shell higher than right. Terminal short setae ..i >....iid leg 

 about twice as long as the terminal segment (l-ig. i.-S;). 



Cypria [Physocypria) pustulosa Shar]xr 1807. 



Length 0.51 mm., height o i'^ n.m *i*th 

 0.22 mm. Clear hrownisli witi' 

 Kxtremitics of shell hairy \ 

 flange on left valve (Fig ' ""• 

 setae three times as lonf,- 

 tween the i)lace of their 1 

 terminal claws. Furca ; 

 length of terminal claw I ' 

 situated alM)Ut middle of ( 

 in river channels, surface *»d liotto*; 

 lakes, and lake and river »horr». ^ 

 SeptemlH-r Illinois. 



Tb; {b\ kight xalvt. U) Firn k«; U) Fare*. 

 (e) Second le«. 



