81 
to a single organ, as in most other Cumacea, and also by the dentated crest of 
the carapace in the female. Besides the type species described below, another 
very distinct species, C. limicola, has been recorded by the present author from 
the Mediterranean. 
Cumella pygmaea, G. 0. Sars. 
(PI. LV). 
Cumella pygmcea, G. 0. Sars. Om den aberrante Krebsdyrgruppe Cumacea, p. 74. 
Syn: Cumella agilis, Norman (male). 
Specific Characters. — Female. Body comparatively short, with the anterior 
division very sharply marked off from the slender tail. Carapace exceedingly 
large and deep, being more than 3 times as long as the exposed part of the 
trunk, its anterior part rather compressed, dorsal face evenly arched, and crested 
throughout its entire length, the crest being armed with from 8 to 12 minute 
anteriorly-curving denticles; pseudorostral projection comparatively short, sub- 
rostral corners distinctly prominent, and defined above by an even emargination. 
Tail (excluding the terminal appendages) somewhat shorter than the anterior divi¬ 
sion, and very narrow. Eye fairly conspicuous and circular in form. Superior 
antennse with the inner flagellum distinctly biarticulate. First pair of legs scarcely 
attaining the length of the carapace, basal joint about the length of the 3 suc¬ 
ceeding joints combined, and strongly serrate at the end on both edges, ante¬ 
penultimate joint fully as long as the last 2 joints combined; 2nd pair with the 
terminal joint about the length of the antepenultimate one. Uropoda with the 
stem coarsely serrate inside, inner ramus rather large, though shorter than the 
stem, and armed with about 7 spinules increasing in length distally, outer ramus 
very narrow, with a slender spine at the tip. Body more or less dark-coloured 
owing to a brown pigment, especially conspicuous on the carapace. Length 
about 2 V 2 mm. 
Adult male somewhat more slender than the female, with the anterior 
division far less vaulted above, and scarcely at all compressed in front. Cara¬ 
pace shallower and quite unarmed, with the upper margin nearly straight; pseu¬ 
dorostral projection shorter, subrostral corners less prominent. Eye very large, 
and subquadrangular in form, with 7 distinct cornern, one median and 3 lateral 
on each side, the former very prominent. Inferior antennse slightly exceeding 
the anterior division of the body in length. Basal joint of the 4 anterior pairs 
of legs greatly dilated. Uropoda differing but slightly in structure from those 
in female. 
