KONGL. SV. VET. AKADEMIENS JIANDLINGAK. HAND. 22. N:<) 7. 187 



siderably shorter thaii the feiuur; the margins are suiooth. The dactylus is sligiitly ('urved, 

 and smooth; it is as long as a iiftli part of the nietacarpus. 



The pleon equals the Avhole ])eri:\30ii in lengtli. The lateral parts of the ])leoiia] 

 segments are strongly rounded below; the hind corners of the last two segments are an- 

 gular and sharp-pointed, that of the first segment is obtnse. 



The pleopoda. The outer ramus of the first ])a.ir has fourteen joints, the inner 

 thirteen. 



The urus is somewhat longer thaji the last perajonal segment. The first ural 

 segment is as long as the last coalesced one; this latter is about a third part broader 

 than long. 



The urojjoda. The ftrst jjair reach below the middle of the outer ramus of the 

 last pair; the peduncle is narrow, linear, and almost five times as long as broad; the rami are 

 equal in length, narrowly elongated and sharp-pointed; at the upper end of the rami, where 

 they are in contact with one another, excavations, with what are probablj' outlets for glands, 

 are distinctly to be seen; the rami are considerably shorter than the peduncle; the inner 

 ramus is serrated on the outer margin, the outer ramus on the inner. The second pair 

 do not reach as far down as the first; the ];eduncle is broader than that of the preced- 

 ing pair, almost linear, and inore than twice as long as it is broad at the apex; the outer 

 ramus is a little shorter and much narrower than the inner, sharp-pointed, and having 

 tiie outer margin smooth and the inner serrated; the inner ramus is broadly ovate, with 

 the apex produced, and sharp-pointed; both margins are serrated; the inner ramus is 

 much shorter than the peduncle. The third pair are more elongated than in the four 

 preceding species; the peduncle is scarcely broader than that of the second pair, almost 

 linear, and much more than twice as long as broad at the apex; the inner ramus is a 

 little more than half as long as the peduncle, and much longer than its breadth; it is 

 broadly ovate, with produced, sharp-pointed apex, and has both the margins serrated; the 

 outer ramus is scarcely longer than the inner, and about half as broad; it is serrated 

 along the inner margin, and smooth on the outer. 



The telson is a little longer than broad, and obtusely triangulär; it is somewhat 

 broader than the peduncle of the last pair of uropoda, and not half as long; it is much 

 shorter than the last ural segment. 



The f e m a I e. 



Pl. X, fig. 30—32. 



The forepart of the body is tumid in the ovigerous female; the middle of the perason 

 is about twice as broad as the pleon; the pleon and urus together are scarcely shorter 

 than the perseon. 



The head is much shorter than the first two perseonal segments together, but broader 

 and deeper than in the male. 



