THE FAIRY SHRIMPS (PHYLLOPODA) 



669 



23 (24) Terminal segment of male clasping antenna with a small process near 



base that is one-eighth as long as the segment. 



Euhranchipus ornatus Holmes 191 1. 



This species was de- 

 scribed from specimens 

 taken in Wisconsin. Tlie 

 frontal appendages are re- 

 markably broad. In the 

 left-hand figure the male 

 frontal appendages are 

 rolled up. 



Fig. 1024. Evhranchipus or- 

 natus. Male. A, posterior 

 view of head; B, frontal 

 organ; C, second antenna. 

 X 10. (After Holmes.) 



24 (23) Terminal segment of male clasping antenna armed with a process 



near its base that is half as long as itself. 



Euhranchipus dadayi Pearse 19 13. 



Recorded from eastern 

 Nebraska and Missouri. 

 Some specimens are re- 

 markably transparent. 

 This species appears in 

 small pools during April 

 and May. The females 

 are more reddish than the 

 translucent males. 



Fig. 1025. Euhranchipus da- 

 dayi. Male. A, posterior 

 view of head; B, frontal 

 organ; C, second antenna. 

 X8. 



25 (18) Some body segments produced into lateral processes 26 



26 (27) Body segments 9 and 10 of female produced into lateral processes; 



post-genital segments unarmed. 



Euhranchipus gelidus (Hay) 1889. 



Records from New York, Massachusetts, 

 Indiana, Alaska, and Yukon Territory, Canivda, 

 Usually abundant where it is found. The proc- 

 esses on the somites just in front of the egg sac 

 on the female distinguish this species from all 

 others in the genus. The Hay's ('89) hatched 

 the eggs of this anostracan from dried mud, 

 without freezing, and described development iil 

 stages. The wide range is remarkable for a 

 member of this genus. 



Fig. 1026. Euhranchipus gelidus. A, side view of 

 head of male; B, side view of posterior portion of 

 female. X 4. 



27 (26) Body segments 9 and 10 of female not produced laterally; post- 



genital segments acutely produced on both sides. ... 28 



