Question 1
Question 2
Question 3
Question 4
Question 6
Question 7
Question 17
Question 18

19a. Right antennule, 3^rd segment from distal end, with process. Leg 5, left exopod inner process short, twice as long as wide.

Leptodiaptomus ashlandi

19b. Right antennule, 3^rd segment from distal end, lacking process. Leg 5, left exopod inner process long, more than 4 times as long and wide.

Onychodiaptomus birgei