Mr. E. J, Miers o)i new Sjyecies of Crustacea. 227 



and lateral margins straight, the latero-posterior angles obtuse ; 

 last segment broad, with tlie posterior margin concave, the 

 lateral margin straight, the latero-posterior angle acute. Seg- 

 ments of the pleon considerably narrower than those of the 

 pereion, short ; terminal segment equilaterally triangular, 

 slightly concave above, sides straight. Pleonal appendages 

 with the base shorter than the terminal segment ; the longer 

 (exserted) ramus narrow, acute, projecting far beyond the 

 terminal segment. External antenna? very long and hairy. 



Length nearly ^ inch. 



ffab. New Zealand. 



8cy2)hax iiitermedias^ n. sp. Type, B.M. 



Resembles S. ornatus, Dana, but with the terminal segment 

 of the pleon broadest at base, covering the base of the appen- ' 

 dages of the penultimate segment, then suddenly narrowing, 

 subacute at the extremity, with the lateral margins concave, 

 the part between the bases of the appendages of the penulti-' 

 mate segment being triangular, with a slight depression on its 

 upper surface. 



Hab. New Zealand. 



The bases of the appendages of the penultimate segment 

 of the pleon are much less widely separated than in Dana's 

 species. But the broad and truncate terminal segment of 

 JS. ornatus is so unlike the usual form of this segment in the 

 Oniscidffi, that I think there may be some error in the figure 

 and description of Dana. 



CeratMlioa lineata^ n. sp. Type, B.M. 



Moderately convex, nearly smooth, terminal segment faintly 

 punctulated. Head small, narrowed anteriorly, front slightly 

 curved downward. Eyes large. First segment of the pereion 

 longer than the rest, antero-lateral lobes produced slightly for- 

 ward and obtuse ; epimeral pieces (coxas) of the last four seg- 

 ments of the ]3ereion large. Terminal segment of the pleon 

 large, almost semicircular in outline, rather broader than long, 

 with a faintly marked, raised, longitudinal median line. Rami of 

 the appendages of the penultimate segment slender, projecting 

 slightly beyond the posterior margin of the last segment, outer 

 rather the longest. Antennae slender. Femoral joints of the 

 ambulatory legs scarcely enlarged. 



Length |- inch. 



Hah. New Zealand. 



Distinguished by the form and markings of the terminal 

 segments of the pleon. 



