THE OSTRACODA 



810 



73 (74) Posterior margin of furca pectinate (Fig. i ,So c). 



Cypris iPanicypris) pcrdegans Hcrrick 1887. 

 LonKth v^omm . hciKht i 7 j mm., width 1^ 



mm. Color «U-ar 1..1I. .. 

 patti'rn in r K-ar ! 

 shell is acutely w, 

 the side the ujHm r 

 parallel, with a I 

 ventrally. TerM!; 

 two small claws and ..u«. 

 spine like. Weetly jxjnds 



. ,„ Fk. ijRo. 



Lyprts (Paracypris) ptftUtam. («) Sidt vk« X •; 

 {b) Dorsal view; (c) Funa. 



11,.^ «.,.v. . 



^\.* l>uf««i «r<« 



74 (73) Posterior margin of furca plain (Fig. 12S1 r). 



Cypris {Paracypris) grandis ChamlxTs 1S77. 



Length .^60 mm., heijjht 2 '• 

 mm. I'rom ahove. shell r- . 

 Bluish white to iKile Kfirnish 

 Arkansas River, Colora<lo. .Miuudc dooo loct. 

 A doubtful form. 



Fig. ij8i. 

 Cypris (Paracypris) gramdis. («) Sidr rim. X 4. 

 (b) Dorsal view; (c) Furca; id) MatilUry palpi 



of male. (After Chantben.) 



75 (76) Terminal segment of second leg small, with two short claws. .in<l a 

 long refiexed seta (Fig. 12S2 </). Second antenna of maic 

 with two sense organs on fourth segment. 



Cyprid Zenker 1S5.J 



76 (75) Terminal segment of second leg long and narrow, with short cbw. 

 and two long reflexed setae (Fig. ijdo 0. Second antenna 

 of male without sense organs on the fourth segment. 



C^'c/ocypm Brady and Norman iSSi^ . . 8q 



77 (78) Right-valve margin not crcnulate anteriorly. X'alves alvnjt the 



same size (Fig. 1284(1-6). . . . Subgenus Cy/^rt. 



78 (77) Right-valve margin crenulate anteriorly. N'alves of deciderlly differ- 



ent sizes (Fig. 1287 a-b). 



Subgenus Physocyprui Xavra iS;i 



79 (80) 



80 (79) 



Terminal claws of second leg approximately equal (Fig. 1 2S: </)• >^ « 

 Terminal claws of second leg evidently unequal (Fig. 1 285 <0 



