188 " THETIS " SCIENTIFIC RESULTS. 



The basal joint of second antenna has a spine on its outer 

 distal extremity and another somewhat smaller one on its inner ; 

 the second joint has also a small spinule on its inner distal angle. 

 The eye peduncle and cornea measures 1*2 mm. in length and is 

 about 0*7 mm. in diameter. 



Measured in a median line, the ischium of the third maxillipedes 

 is longer than the merus, the outer distal extremity is somewhat 

 produced but obtuse ; the inner border terminates in a spine ; the 

 anterior (cutting) ridge has about twenty-eight closely placed 

 denticles ; the inner border of the merus bears two strong spines, 

 one at the middle and the other at the distal extremity. 



The left chelipede has the merus joint compressed in the proximal 

 half, with almost smooth inner and outer surfaces; the upper border 

 is armed with five or six spinules, three in a line near the base 

 and a pair situated on a slight transverse ridge at a short distance 

 from the distal margin ; the latter has four spines, subequal in 

 size and in distance apart, all being visible from above ; there are 

 also two widely separated spines on lower margin. 



The lower border and inner surface of the carpus are smooth ; 

 the external surface is armed with eight spinules, disposed in two 

 longitudinal rows of four each ; another row of four occurs on 

 the upper border, and there is a large spine on the interno-distal 

 angle. 



Hand compressed; inner and outer surfaces of the palm scaly; 

 external aspect of the lower border bearing a series of six spinules; 

 the distal is somewhat larger than the others ; the upper border 

 is armed with five spinules. Fingers slender, rather narrow and 

 excavated internally at the extremities, the lower one terminating 

 in two prominent white denticles, the upper with three \'ery 

 small ones ; inner edge of the former finely crenate. Anterior 

 and posterior surfaces of the merus joint of the second leg smooth ; 

 lower border with two spines, one near to and the other at the 

 distal extremity ; there is also another spine just above the latter 

 on the distal margin. Upper border with seven spines ; the 

 distal one is large and prominent. 



Carpus with three spines on the upper border and two on the 

 external surface ; lower border smooth, with a small spine on the 

 distal extremity. 



Propodus with two spines situated on the proximal portion of 

 the upper border ; the lower border bears four mobile spinules at 

 about equal distances apart, commencing at the proximal third. 



Tarsus compressed, a little curved, tapering to an acute horny 

 claw ; lower border armed with six chitinous spinules, which arise 

 from small bracket-like projections. 



