9. THE CLASS CRUSTACEA
327
Descriptions of stages I-IV females have been given by Atkins
(1926) (Figs. 218-221).
FIQE. 220 and 221. Pinnotheres pisum. (220) Hard stage female, dorsal view; (221) stage
III female, dorsal view. (Redrawn after Atkins, 1926).
Descriptions. Adult female between 9 and 18 mm wide, carapace
soft, wider than long, often quadrilateral in shape, generally without
conspicuous color pattern ; front very narrow, about one-fifth width of
327
Descriptions of stages I-IV females have been given by Atkins
(1926) (Figs. 218-221).
FIQE. 220 and 221. Pinnotheres pisum. (220) Hard stage female, dorsal view; (221) stage
III female, dorsal view. (Redrawn after Atkins, 1926).
Descriptions. Adult female between 9 and 18 mm wide, carapace
soft, wider than long, often quadrilateral in shape, generally without
conspicuous color pattern ; front very narrow, about one-fifth width of