MALACOSTRACAN FAUNA OF THE MEDITERRANEAN. 293 
SCHIZOPODA. 
SrrreLuta Cxiavstit, Sars. 
Cannes and Hyéres, 2-30 fath. 
This was the most abundant crustacean I met with: mest of 
the specimens were immature. 
ANCHIALUS aGitis, Sars. 
St. 3, 5, 6. Several. 
ERYTHROPS ELEGANS, Sars. 
St. 5. Three young. 
-PsEUDOMMA, sp. 
St. 5. A head only. 
i, YSIDOPSIS GIBBOSA, Sars. 
St. 4a, 46. Three or four. 
Genus Mystpoprsts ? 
Mysrpopsts (?) SERRATICAUDA, n. sp. (Pl. 27. figs. 1-6.) 
St. 3. One adult female. Length 5 mm. 
General form rather slender. Carapace smooth, the frontal 
margin somewhat produced, forming an obtuse angle. 
Eyes subglobose, the greater part occupied by the pigment. 
Upper antenne much as in WL. didelphys, Norman. 
Lower antenne also of the usual form; antennal scale narrow 
lanceolate, more than twice as long as the peduncle, and eight 
times as long as wide at the base; terminal joint very small. 
Legs slender, about as long as the antennal scale; tarsus, 
including the terminal tuft of sete and the nail, about as long as 
the preceding joint; its first joint about twice as long as the 2nd 
and rather longer than the 3rd. 
Telson about as long as the inner uropod, tapering gradually, 
with 9 ¢eeth (not spines), increasing in size towards the extremity, 
on each margin, and two strong spines on each side of the 
emarginate apex. 
Inner uropod very little shorter and narrower than the outer ; 
a strong spine at the base. 
Mandibular palp apparently absent. 
Length including uropods 5 mm. 
Easily distinguishable by the serrate or dentate margins of the 
telson. 2. angusta, Sars, which has the basal part of this 
LINN, JOURN.—ZOOLOGY, VOL. XXVIII. Al 
