256 



DISCOVERY REPORTS 



rostrum. Eyes feebly developed, no corneal lenses, ocular pigment (as preserved) 

 whitish. 



Peraeon medio-dorsally carinate. The course of the lateral keels can be seen from the 

 figure. Side-plates without prominent anterior corners; 5th longest; horizontal keels 

 on 2, 3, 4 and 6. 



Pleon medio-dorsally carinate, but not serrate; a lateral keel on segments 1-4. Telson 

 lanceolate, rather sharply pointed, as long as peduncle of 3rd uropod. 



Antenna 1, terminal joint ensiform, triquetral in cross-section, upper margin curved, 

 sharp, lower margin straight, keeled on outer and inner sides, no minute apical joints. 

 Antenna 2 incomplete but very large, 3rd (2nd free) joint with distal spine on inner side 

 (dotted in figure), 4th elongate ensiform, upper margin sharp, lower margin keeled on 

 outer and inner sides, apex lost. 



Fig. 159. Lanceola remipes, n.sp. General view, with apices of 4th and 6th joints 

 of gnathopod 1, and 6th joint of peraeopod 1 further enlarged. 



Gnathopod 1, 5th joint nearly z\ times as long as broad, 6th half breadth of 5th, with 

 minute 7th joint ; a few setae on anterior margin of 2nd joint and lower distal margin of 

 4th, the joints otherwise smooth; 2nd joint keeled near anterior margin, and 3rd and 4th 

 on middle of outer surface. Gnathopod 2 similar, but 5th joint more slender, 6th lost. 



Peraeopod 1, 4th joint distally expanded, 5th expanded, ovate, the lower distal corner 

 forming a rounded flange on inner side, 6th lanceolate, 7th minute; 2nd joint keeled 

 near front and hind margins, 3rd-6th keeled on middle of outer surface. Peraeopod 2 

 similar, 5th and 6th joints lost. Peraeopod 3, 2nd joint with lower hind corner forming 

 a rounded flange on outside, 3rd with rounded flanges both inside and outside, 4th 

 broadly expanded, following joints lost. Peraeopod 4, 2nd joint with small flange 

 distally, 3rd with two flanges as in peraeopod 3, 4th and 5th subequal, 6th slightly 

 shorter, with terminal retractile claw. Peraeopod 5 similar to, but slightly shorter 

 than, 4th. 



Uropod 1, peduncle about four times as long as wide, with median longitudinal keel 

 on lower surface, rami lost. Uropod 2 lost. Uropod 3, peduncle about twice as long as 

 wide, with median longitudinal keel on upper surface, rami lost. 



