CRUSTACEA. 



are about two-thirds as long as the body ; the two flagella are sub- 

 equal, the basal joints have a few short hairs at apex ; the second and 

 third joints are nearly equal. Flagellum of outer pair about as long 

 as in first pair. 



The legs have the last three joints together about half the length 

 of joint next preceding, and the last joint is not half the penult in 

 length. The branchiae consist of five to eight simple narrow bursae 

 attached to one or two pedicels. 



Mandibles subcylindrical, with apex dentate and lower side of 

 summit prominent and denticulate, with a grinding surface. The 

 palpus has three joints, and is furnished with a few rather long scat- 

 tered hairs ; the second joint is about twice as long as either of the 

 others, and the last is obtuse. The maxilliped consists of three 

 lamellar joints, set with spinulous setae on the inner side. 



Two ovarian bags were extruded from posterior part of thorax on 

 pressure, which had an car-drop shape, diminishing above to a tubular 

 form ; the tube was broken in the dissection, and not farther traced ; 

 a small globular mass of similar ovarian character lay near the head 

 of each bag, and above, the drawing represents another large ovarian 

 bag, which was detached and broken. 



The animal contains, like another species, several pairs of minute, 

 ruby-red spherules, as shown in the drawing, one pair near base of 

 second thoracic feet, another in posterior part of thorax (above alluded 

 to), and smother in each of the four anterior abdominal segments. 

 They have no connexion with the ovarian apparatus. Figure i repre- 

 sents one in a prominence at the base of an abdominal leg. 



Pigment of eye, black ; a deep red spot in the pedicel, a short dis- 

 tance back of the pigment. 



EUPHAUSIA SPLENDENS. 



Carapax brevissime' rostratus. Articulus antenna-rum internarum pri- 

 mus apice productus. Squama basalis antennarum externarum basin 

 non siiperans. Pedes tenuissimi, articulis tribus ultimis subcequis, 

 simul sumtis vix brevioribus quam articulus precedens, setis longis 

 breviter plumosis, palpo plus duplo breviore. Segmentum abdomini* 

 posticum lamellis caudalibus longius, barbie subapicalibus salientilnis, 

 Qtum 5to fere duplo longius. Branchiae posticce ramosce. 



