100 STALK-EYED CRUSTACEA. 



Munidopsis hendersoniana Fax. 

 Pkde XXIV., Fig. 2, ^, 2\ ^. 



Munidopsis hendersoniana Fax., Bull. Mus. Comp. Zool, XXIV. 190, 1893. 



Orophorhj/nclms hendersonianus A. M. Edw. et Bouv., Aim. Sci. Nat., Zool., 7*™ Ser., XVI. 287, 1S94. 



Ill this species, as in M. marginata {Elasmomtus marginatus Heiid.), M. 

 edivardsii {^Elasmonotus edwardsii W.-M.), etc., the later.al margins of the cara- 

 pace are produced into sharp crests which overhang the sides of the body. 

 The upper surface of the carapace is rather flat, and is clothed with a close, 

 short pubescence; the sides of the carapace are nearly parallel. The rostrum 

 is long, acute, nearly horizontal, the upper surface roof-shaped. There is a 

 prominent tooth at the external orbital angle, and another smaller one at the 

 antero-external angle of the carapace ; otherwise the carapace is unarmed. 

 The eye-stalks are immovable, their proximal ends being anchylosed with the 

 ocular segment ; they project forward far beyond the eye, forming sharp 

 horn.s one half as long as the rostrum ; seen from above, the eye-stalks 

 appear like lateral spines of the rostrum ; they are pubescent, like the cara- 

 pace. The antennae are shorter than the body ; their basal segments are armed 

 with a prominent triangular tooth on the anterior margin of the lower side, 

 while the second segments are similarly equipped with a tooth on the outer 

 side. The chelipeds are short and pubescent ; there is a prominent spine at 

 the distal superior angle of the ischium, and a tooth near the distal end of 

 the internal margin; five or six teeth along the supei'ior margin of the merus, 

 and one on eacli side of the distal end of the same segment ; the carpus bears 

 a superior tooth near the proximal end, together with three teeth on the distal 

 margin ; the chela is short and thick, the hand devoid of teeth or spines ; the 

 fingers are very short and thick, meeting one another only at their spoon- 

 shaped denticulated tips ; there is a rounded tubercle at the base of the inner 

 margin of the immovable finger ; the outer margin of this finger is denticu- 

 lated. Ambulatory limbs: five to seven spines on '.he superior and external 

 inferior margin of the meri (those on the superior margin the largest) ; 

 upper edge of carpus three to four-spined ; propodites unarmed ; inner mar- 

 gin of dactyli denticulated. Abdomen without spines, somewhat tomentose. 



Length, .37 mm.; carapace, 20 mm.; rostrum, G.5 mm. ; breadth of cara- 

 pace, 12 mm. ; length of cheliped, 28 mm. 



Station .3.39.3. 1020 fathoms. 3 males, 1 fern, (with Pclhg aster). 



