410 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxv. 



Island. The latter collections were made November 10, 1907. while 

 all the former were made from May 3 to May 20, 1906. 



Distribution world-wide. Fossil in the Tertiary, England. 



8. CYPRIA Zenker, 18S4. 



14, CYPRIA DENTIFERA Sharpe. 



Plate L, figs. 3, 4. 



Cypria dentifera Shaepe, Bull. Illinois State Lab. Xat. Hist., IV, 1897, pp. 

 163-465, pi. xl vii, figs. 6-11. 



Dimensions. — Length, 0.69 mm. ; height, 0.38 mm. ; breadth, 0.26 

 mm. 



Described from several specimens found in the Zoological Gardens, 

 Cincinnati, Ohio, August, 1881. Also .found in museum collections 

 from ponds in Long Island. Xew York, and a pond near Westfield, 

 New Jersey, June, 1908. Those from the pond near Westfield were 

 collected by Mr. John J. Schoonhoven, president of the department of 

 microscopy. Brooklyn Institute of Arts and Sciences. 



This species is distinguished by having combs of remarkably long 

 teeth on the distal halves of the terminal claws of the ramus. 



9. ILYOCYPRIS Brady and Norman, 1889. 



16. ILYOCYPRIS GIBBA (Ramdohr). 

 Plate LVI, figs. 1, 2. 



Cypris ffibba Ramdohr, Mag. der Gesell. Naturforsch. Freunde Berlin. 



II, 1S0S, p. 91, pi. in. ligs. 13-17. 

 Cypris biplicata Koch, Deutschlands Crustacean, Myriopoden und Arach- 



niden, etc., 1838, Heft 21, fig. 10. 

 Cypris sinuata Fischeb, Mem. des. Sav. Strang. Acad. St. Petersbourg, VI, 



1847, p. 193, pi. x. fig. 4. 

 Capri* biplicata Fischer, Mem. des Sav. Strang. Acad. St. Petersbourg. 



VII. 1854, p. 150, pi. v, figs. 5-8. 

 Cypris gibba Brady, Trans. Linn. Soc. London, XXVI, 1868, p. 3G9, pi. xxiv, 



figs. 47-54 ; pi. xxxvi, fig. 2. 

 Ilyocypris gibba Brady and Norman, Trans. Royal Dublin Soc, IV. 



1889, i>. 107. pi. xxn/ figs. 1-5. — Vavra, Arch. Naturw. Durchforsch. 



Bohmen, VIII, Heft 3, 1891, p. .",7. fig. 17 (1-7).— Mttller, Zoologica, 



XII, Heft 30, 1900, p. 88, pi. xix. ligs. 7. 8, 10, 14-19; pi. xx. ligs. 17. 18. 



Dimensions of female. — Length. 0.85 to 0.95 mm.; height, 0.42 

 mm. to 0.18 mm.; breadth, 0.38 to 0.44 mm. 



Seen from the side (fig. 1), the shell is quite similar to /. hradyi, 

 excepting that there are two prominent tubercles just back of the 

 eye-spot, another in the region of the muscle impressions, and yet two 

 others posterior to this one situated at about the beginning of the pos- 

 terior third of the shell. The smaller tubercles at the anterior and 

 posterior ends are more prominent than those of /. bradyi. 



