ENTOMOSTRACA OF MINNESOTA. 49 



(Species preceded by an asterisk have been reported In America.) 



* Liiniiocalauus macrurus Sars. 



Plate I, Figs. 1-4, 



Centropages grimaldii, De Guerne '86. 



Limnocalanus macraras var. auctus, Forbes '87; Sars '62; Nordquist '83; De Guerne 



and Richard '89; Marsh '92. 



The subcylindrical three jointed abdomen is longer than the elon- 

 gate oval six-jointed thorax. The stylets are very long, spiny and 

 ciliated. Antennae hardly reaching the penultimate abdominal seg- 

 ment. The claw of the female fifth foot armed with fine, sharp spines. 

 The claw of the male right fifth foot is thick and bears two spines 

 internally. Color generally hyaline. Length about 2.0 mm. 



Lininocalauus siueusis Poppe. 

 De Guerne and Eichard '89. 

 This smaller and rather depauperate form from China may be 

 recognized by the fact that the claw of the fifth foot of the female has 

 strong and irregular teeth and that of the right fifth foot of the male 

 is slender and flexuous. The abdomen is shorter than the thorax. 

 Length 1.65 mm. 



GENUS EURYTEiUORA Giesbrecht. 



(Temorella of Glaus, Poppe, Nordquist, Herrick.) 

 Relatively robust; cephalothorax six-jointed; frontal processes 

 present. Abdomen of the male, five-jointed, of the female, three- 

 jointed. Caudal stylets slender, often very long relatively; apical 

 setse four, also a similar lateral seta. Antennae 23- or 24-jointed, 

 about as long as the cephalothorax. In the male 20 jointed with the 

 geniculation between segments 18 and 19. Four pairs of bi-ramose 

 swimming feet, the first pair with a one-jointed inner ramus, the 

 second to fourth pairs with two-jointed inner ramus. Fifth pair.of feet 

 in the female simple, similar, penultimate segment produced into a 

 strong hook process; fifth feet of the male uni-ramose, each three- 

 jointed, dissimilar, last joint of the right foot unguiform, of the left 

 expanded. 



The genus Temora was founded by Baird, to receive one of the 

 Galanidce found abundantly on the English coast and since identified 

 in various places along the shores of the German ocean. Much con- 

 fusion has existed from the first in the nomenclature of this group re- 

 sulting, in the first place, from the assumption that the type of the 

 genus Temora is identical with Monoculns finmarcMcus of Gunner, 

 falsely identified with Cycloj^s longicornis of Mueller, and later from 

 the fact that the male of one species has been wedded by our synon- 

 omy to the female of a distinct though closely allied form. 



