The Schizopoda collected by the Maia and Puritan in the Mediterranean. 139 
The moutli parts on the whole resemble those of the genus 
Pseudoimna but the molar tubercle of the mandible seems unusually 
pronounced. Of the thoracic limhs only the 1. remains on any of the 
specìmens and this does not appear to present any features of dis- 
tinction from the same limbs in Pseudomma and allied genera. 
The genital appendix to the 8. thoracic limbs of the male is 
short and rather robust, terminating in 7 or 8 stout curved setae. 
The pleopods of the female are ali rudimentary as are also the 
first 3 in the male ; the 4. pleopods of the male are elongate (Fig. 17) 
and consist of a uni-articulate siegle ramus terminated by a long 
and powerful seta or filament, recurved at its tip ; there is a single 
shorter and more slender seta some little way from the orìgin of 
the terminal one, on the inner margin of the branch; the 5. pleopods 
(Fig. 18) are likewise elongate but shorter than the 4. and like them 
consisting of a single uni-articulate branch, tipped by a few short 
setae. 
Telson (Fig. 16, 16a) about as long or a little shorter than the 
6. segment of the pleon, narrowly lanceolate in shape, from 21/2 to 
3 times as long as broad; evenly tapering to a narrowly rounded 
apex which bears a pair of loug terminal spines, rather more than 
a quarter of the telson in length; on either side of the terminal 
spines are 4 other spines occupying the distai one sixth of the lateral 
margins of the telson and decreasing in length anteriorly ; there are 
no median apical setae. 
Uropods long and very narrow, a little longer than the telson; 
the outer sub-equal to the inner in length; no spines on the inner 
ventral margin of the latter; otocyst well developed. 
Length 4.5 mm. 
The material of this new form, while abundant enough from 
the point of view of the number of specimen present, is unsatis- 
factory by reason of the very indifferent state of preservation of 
the majority of the examples, so that it was with difficulty that the 
structure of the various parts was made out. The small size of the 
specimens added to the difficulties originated by poor preservation. 
There is, indeed, a suspicion that the specimens are not mature as 
I could not find any incubatory lamellae on the females and the 
males were without traces of the antennular brush of setae though 
the pleopods of the latter sex looked fully formed and the genital 
appendix to the 8. thoracic limbs was well developed. The distinguish- 
ing feature of the species is, of course, the structure of the 4. and 
