30 G. 0. SARS. PKELIMINARY NOTICES ON THE SCHIZOPODA. 



tennular pedimcle in the female elongated and narrow, flagella of 

 botli pair of antennæ filiform, and consisting of few articulations. 

 Mandibulæ quite wanting the palpi. Ist pair of maxillæ with the 

 outer plate obsolete; 2ndpair indistinctly articulated. without spines 

 at the inner margin, but only provided with a few ciliated setæ. 

 Two anterior pairs of legs small and slender. Third pair of legs 

 greatly developed. geniculate, 3d and 4th joint very mnch elongated 

 and narrow, without setæ; 5th joint suddendly rather swollen and 

 provided with strong setæ, which impinge against the curved spines 

 issuing from the small terminal joint, both together forming a sort 

 of hand or grasping organ. Suceediug pairs very small, the terminal 

 part short. in the 5th pair only 2-jointed, in the 6th pair one- 

 jointed. 7th pair of legs with the stem consisting of 2 short 

 articulations. Last pair of legs quite rudimentary, only forming a 

 small setiferous plate. The exopodites rapidly diminishing in size 

 from the Ist to the last pair of legs. Branchiæ rather simple, 

 excepting the last pair. Inner lamella of the two anterior pairs 

 of pleopoda in the male modified in the usual manner. Only three 

 phosphorescent spherules present, one ventral between the bases 

 of the Ist pair of pleopoda, and two lateral at the bases of the 

 7th pair of legs, the last very largely developed in the male. 



RcmarJcs. This very distinct new genus is at once distinguished 

 by the peculiar structure of the third pair of legs. which are so 

 modihed as to act as a sort of grasping organ. Also in other respects 

 it dillers somewhat considerably from the other Euphausiidæ. 5 

 different species of this remarkable genus are represented in the 

 collection. All these are comparatively of very small size, but 

 certainly cannot be regarded as larval stages, as at least in one 

 of the species both ovigerous females and adult males have been 

 observed. The genus is also known to me from an earlier date, 

 a species having been observed by me in the Mediterranean at 

 Messina in the year of 1876. 



