COPEPODA 



761 



27(32,35) Process much shorter than penultimate segment ,8 



28 (31) Right endopodite of male fifth foot ru(hmentary [ ] ,g 



29 (30) Lateral spine of second segment of right cx.,p«,.liic of male fifih 



foot terminal Diuplunnts lintnn; v>>r)>,.. ,s.. . 



Founri in Yellow- 

 stone I'ark an«l ui 

 tin- vallo' of the 

 (iailalin River, 



Mont.ui.i 



OiaUommt 



.-l.fiMhfr^ 



Flc..tiHy 

 Union i 



..Irn.ilr . M f< 

 t' r:r, :, ;, ■ .r..r- ■ 

 <>i r:.(.t .i;.;f nr ; • 

 nvalf X 2 30 ( 

 fifth foot of female 

 X 35&- (Ohsiiul ) 



30 (29) 



Lateral spine of second segment of right cxopodite of male fifth fool 

 near the proximal end. . Diaptomus trybomi Lilljclx>rg 1H89. 



Fig. 1186. Diaptomus trybomi. ^, abdomen of female. X 70 '':/'f|^ ''^' ''^ Ti'-.K,^.','**^ 

 C, terminal segments of right antenna of male. X 100. (After Dc Oucnie and Kichanl ) 



The antenna! process is dentate on the outer margin and the alxiomcn of the female awi 

 metrical. Has been found only in Oregon. 



Length of female, 1.5 mm. 

 Length of male, 1.4 mm. 



