NO. 11C2. BRA CHYVUA COLLECTED liY THE ALU J TROSS—IIA THB CX. 601 



external crest. The propodus is very large; its width is nearly equal 

 to its superior length, and its thickness is about half its superior 

 length ; it is surmounted by a double crest of irregular spinulous spines 

 or tubercles; inner and outer surfaces granulous, the gianules of the 

 outer surface tending to collect in two longitudinal bands, one median, 

 the other at the lower margin. Fingers gaping slightly, for two-thirds 

 of their length dcei)ly grooved, margins uneven but not dentate; pol- 

 lex not defiexed. The left cheliped is missing in the adult males. In 

 the immature male the right cheliped is much less strong than in the 

 adult; the left propodus is about half as wide as the right. The same 

 is true of the female; the fingers are proportionately longer than in the 

 male, not gaping; poliex somewhat deHexed. Ambulatory legs of mod- 

 erate length. Meral joints broad, coarsely granulate; terminal tooth 

 of anterior margin in the first i)air acute and spiniform, in the second 

 and third pairs acute or subacute. Proximal lobe of anterior margin 

 of carpal joints rounded; terminal teeth acute, exce])ting the one on 

 the anterior margin of the first pair, which is obtuse. Dactyli with 

 sinuous posterior margins. Last pair of feet reaching a little beyond 

 the merus of the preceding pair. 



J)imen.sion.s. — Male: Length, l'i.~) mm.; width, 15.7 mm.; length of 

 right propodus, measured on lower margin, 10 mm.; on superior mar- 

 gin, Oram.; width, 5.4 mm. ; thickness, 3. 2 mm. Female: Length, 11,3 

 mm.; width, 13.1 mm. 



Types. — No. 21590, U.S.N. M. Three males, four females, from off Cape 

 St. Lucas, 31 fathoms, station 2820. 



OCYPODIDil':. 



107. EUCRATOPSIS MACROPHTHALMA, new species. 

 (PlateXLIII, figH. 3, 4.) 



Carapace and orbits very wide; eyes long; three suhequal antero lateral 

 teeth. 



Carapace wider then in E. elata (A. Milne Edwards); regions dis- 

 tinct. Carapace very convex longitudinally; transversely nearly level 

 for its njiddle two-thirds, defiexed toward the margins; marginal teeth 

 directed obliriuely upward. Front about one third the width of the 

 carapace; lobes slightly convex. Orbits wider and eyes longer than in 

 E. elata; superior margin of orbit sloping l)ackward and outward. 

 Anterolateral teeth three, including the orbital, acute, curved slightly 

 forward; ])OStero-lateral margin with a slight tooth or notch. Tlie cara- 

 pace has more the appearance of Enryplax nitidus Stimpson, but the 

 antenna' are not excluded from the orbits, as in that genus. 



The merus of the right cheliped (the left is wanting) is granulated 

 toward the margins, which are unarmed. Cari)us finely granulated, 

 with an anterior submarginal sulcus and a short blunt inner tooth, which 

 is continued mferiorly in a blunt prominence. The palm is slightly 



