Diaptomus PsettdosanguineiLs Sp. Nov. 7 



Cladoceba 



FAMILY BOSMINIDAB 

 GENUS BOSlflNA BAIRD 184S 

 1, BOSMINA LiONGIROSTRIS (O. F. Mueller) 1781. 

 Boamina longiroatria, Blrffe. '18. p. 706. Ag. lOM. 

 Common in this district, beinc abundant in many of the no-outlet ponda 

 during the warm season. It has been found where vegetation does and does 

 not exist The hydrogen ion content of the water was determined for onljr 

 three ponds, varying from PH 7.8 to 8.2. 



FAMILY CHYDORIDAB 

 GENUS ALONA BAIRO 181* 



a. ALONA COSTATA Bars 1888. 



Alona coatata. Herrick * Turner, 'U. pp. S4f, S4C. pL ••, fl*. t. 

 Collected in November, 1909, among pond lilies in a small no-outlet pond 

 having a temperature of 18'C., the only time encountered In this district. 

 8. ALONA RECTANGULAR Sara 1881. 



.Alona pulchra, Herrick A Turner. 'M. p. 8ii. 

 In May, 1921, this species was found in a marsh and in a large ao-outM 

 pond. The hydrogen ion content in each oa** was PH 8.2. The tempara- 

 ture of the water was 27 *C. 



GENUS CHYDORU8 LEACH 184S 

 4. CHYDORUS SPHAEailCUS (O. P. Mueller) 1781. 

 Chydorua aphaericua. Blrge, '78. pp. 28, 24. 



Chydorua »pha«rieua, Herrick ft Turner. 'IS. p. tffl. pL 84. flc. 4. 



7. 8. 10. 



This species is common in marshea and anaong the Tagatatloii la eaHate 



no-outlet ponds of this district The temperature of the water la vklek 



It was found varied from 18-S1*C. The hydrogaa k>n content of the watw 



was determined in only one instance, being 8.2. May to October. 



GENUS KURZIA DYBOWSKI AND GROCHOWSKI 1884 

 C. KURZIA LATISSIMA (Kurs) 1874. 



Kunia latiaaima Blrge, '18. p. 718. Ag. 1120. 



Alonopaia latiaaima, Herrick and Turner, 'M. pp. SSt, 218. pL fl. 

 flg. 8 ; pi. 68. fig. 1, 9. 

 Collected on two ocoaslons In July, 1820. In large numbers among water 

 plantain in a shallow lake. 



GENUS LEYDIGIA KURZ 1874 

 e. LEYDIGIA QUADRANGULARIS (Leydlg) 1880 



Leydigia quadranffularia, Herrick ft Turner. '96. p. 224. pL CO, 



fig. 8: pi. «0. fig. 4. 



Collected twice in this neighborhood, in April, 1910, among water liUea. 



in a shallow no-outlet pond, the temperature of which was 20*C. ; and In 



Augxist 1921, in a shallow no-outlet pond, the temperature of which was 



32 "C. and the hydrogen ion content PH 7.4. 



7. LEYDIGIA ACANTHROCERCOIDES (Fischer) 1864. 



Leydigia acanthocercoidea, Herrick & Turner, '96. p. 284. 

 A few specimens of this collected on June 25, 1010. In a no-outlet pond, 

 the only time it has been encountered. 



GENUS OXYURELLA DYBOWSKI AND GROCHOWSKI 1894. 



8. OXYURELLA TENUICAUDIS (Bars) 1862. 



Alona tenuicaudia, Herrick & Turner, '95. pp. 242. 248. pL 62. 

 flg. 11. 

 A few collected in June, 1921, in a shallow transitional pond having a 

 temperature of 24*C. 



