418 MK. G. -M. THOMSOX OX THE NEW ZEALAND 



foliaccons plate is produced considerably beyond it ; the flagellum is slender and nearly 

 as long as the body of the animal. 



The mandibles (fla;. G) liave a very distinct curved molar process and a well-developed 

 four-toothed cutting-plate ; there is no palp jjresent. 



The first maxillte (fig. 7) are small, feeble, and thi-ee-branched ; the outer branch is 

 short, ovate, and bears two tine terminal sette ; the middle one is the largest and broadens 

 distally, its edge being fringed Avith short spines; the inner is short and has a rounded 

 finely setose edge. 



The second maxillae (fig. 8) consist of two distinct processes: an inner foinned by two 

 broad, straight-edged, overlapjjing plates with a thick fringe of seta3 on their edges, and 

 overlapped at their base by two smaller, rounded, fringed plates ; the outer process extends 

 forward into a slender, rounded, fringed plate, and backward into a long slender portion 

 ending in long settp, whicli lie in tlie l)ranchial cavity of the body. Between the two 

 main portions of the limb there is produced a very small, slender, and rudimentary one- 

 jointed process, only visible under the microscope. 



The first maxillipeds (fig. t)) are two-lobed, the inner lobe being semicircular and 

 fringed on the straight inner edge with numerous setae, the outer shorter and thinner ; 

 between them, and apparently projecting from the basal joint, is a long, slender, slightly 

 fiatteued process. 



The second maxillipeds (fig. 10) have a short podobranehia on the coxal joint, and a 

 long plumose branch (ecphysis) on the basos ; the ischium is short, the meros still 

 shorter, whik^ the carpos is dilated into a short fi-inged plate ; the propodos is Ijent 

 against the preceding joints in the form of a large fi'inged plate. I can find no trace of 

 a dactylos. 



The third maxillipeds (fig. 11) are long and pediform, four-jointed ; the short basal 

 joint carries a long exojiodite ; the next three are long and subequal, the terminal one 

 bearing numerous spines. 



The first pereiopoda (fig. 12) are comparatively sliort and stout ; the exopodite reaches 

 nearly to the propodos; the carpos is sLort, broadened at its deeply^ excavated apex; the 

 stout propodos articulates with it at its lower angle; the dactylos and poUex are tliick, 

 spoon-excavate on their inner faces, aird furnished ■\^■ith a thick tuft of hairs at their 

 extremities. 



The second pereiopoda (fig. 13) arc considerably lonner and more slender than the first 

 pair; the exopodite reaches only to the extremity of the meros; the carpos is long, 

 excavate at the tip, and the propodos, which resenildes that of the first pair but is more 

 slender, is also attached to it by its lower angle. 



The three posterior pairs are long and nearly imarnied, except for a few spinules on 

 the meros and propodos ; the dactyla are simple ; eacii liud) bears a well-developed 

 exopodite. 



The pleopoda have strongly developed foliaceous plates, and each bears a stylamblys. 

 The sixth pair have the basal joint short, and ])rodueed on the outer margin into a tootli ; 

 the foliaceous plates are subcqual in length, and the outer is crossed by a well-defined 

 diaeresis. 



