I4 ON A PYCNOGONID OF THE GENUS HALOSOMA, 



chela well developed, suspended vertically in front of pro- 

 boscis, palm swollen with immovable finger only slightly 

 curved, movable finger external and much curved, the two 

 fingers when opposed enclosing a considerable space and 

 having ends of fingers slightly crossed. Each finger pos- 

 sesses on its inner edge a few minute but distinct teeth. 



Pallas wanting. 



Ovigers 6 jointed, 1st joint short and sqvxare in surface 

 view, being about as long as broad, 2nd and 4th joints 

 longer and subequal, 2nd joint much wider than the 4th, 

 which is much curved, 3rd joint is much the longest,, 

 bujng abont twice as lo^ng as the 2nd; at about one- third 

 the distaace from its proximal end is a slight oomstric- 

 tion indicating possibly the fusion of two' joints; 5th joint 

 is shorter than the 4tih, the 6th is very small, much smaller 

 than the 5th, with rounded apex; terminal claw absent, 

 noi coimpoimd spines are present, but a few simple ones 

 occur on the last few joints. Egg masses simple rounded, 

 one to each oviger. 



Legs rather stout; 1st, 2nd, and 3rd coxse small, the 

 2nd being the largest, proportion of lengths being approxi- 

 matiely 5 : 8 : 6 ; femur a> little shorter than coxal region, 

 somewhat expanded at distal end with well marlced spine 

 at dorsal distal angle. 1st tibia about same length as 

 femur, bearing a similar spine in a similar position ; 2nd 

 tibia slightly shorter than 1st tibia, bearing a dorsal spine 

 aboiut one-third the distance from, its distal end ; tarsus 

 very small, squarish, but with a distally hollow surface 

 for articulation with the propodus, tarsus provided ven- 

 trally with strong hairs, dorsally with a minute but dis- 

 tinct spine; propodus stout and curved, longer than 2nd' 

 tibia, poissessing a. well-marked heel armed with twc 

 strong and several smaller spines, sole provided with a 

 number of spines with tips strongly bent outwards. Ther 

 chitinous knife edge, mentioned by Cole, is not observable 

 in the species. Claw large and strong, about two- 



thirds the length of the propodus, capable of closing 

 against propodus like the blade of a penknife; auxiliary- 

 claws small but distinct. 



Genital ai^ertures on the second coxae of all the legs. 

 Measurements : — 



Trunk 1.3 mm. 



Third leg — 1st coxa .18 ,, 



,, „ 2nd ,, .32 „ 



,, ,, 3rd ,, .24 ,, 



„ ,, Femur .64 ,, 



