STALK-EYED CRUSTACEA. 

 •16 



,„ ,he ™„.,« rarahm,, as typifle<l by P. granuUa and ilU^trated al,o 

 by P. *»;l,r, the a,„b„!..«ry appendages are co„si,,e,ab y longer than e 

 c Llipeds, and much longer than tbe earapace is broad ; when Bexed beneath 

 Ue t,on..x, the tips of the dactyli extend over the ,soh,a even to the basal 

 t,ne„.s; although the legs are folded beneath the body when at rest 

 ;h°ere are none of those special n.odiacations of strnctnre resnltnrg ,n that 

 perfect titling together and lixity of parts exhibited in the genns Ed,„mm«, 



as described above. . zv? j.„ 



The natural position of Paralomis lies between Echmocerm and Lrptohthodcs. 



Paralomis diomedese Fax. 

 Plate VII., Fig. 3, 3% 3". 



Echinoceru. diomede. Fax.. Bull. Mus. Comp. Zool, XXIV. 1G4, 1893. 



Carapace subpentagonal, gastric and branchial regions inflated, the whole 

 surface beset with tubercles which give rise to n.inute .et.. There .one 

 rather more prominent tubercle u. the depression on each s.de of the gastnc 

 area. RostrL short, three-spined ; one of the spines is meduan and m enor 

 two are paired near the base above; in one of the two spec.mens obtained 

 the median spine is toothed below. The antero-lateral margn. of the cara- 

 pace is irregularly toothed. Eye-stalks spinulose above, w.th one prou.n.en 

 spine projecting forward over the cornea. The movable scale or spu,e of 

 the antenna is spinulose on each side (four or five spines on each marg.n). 

 The merus of the cheliped bears a spine on the inner side at the distal end ; 

 the carpus is .smooth outside, the inner border expanded into a seven-toothed 

 crest setose within, the outer border straight, naked, and keeled ; t le chela) 

 are of unequal size (the right being the larger), setose, spiny on the upper 

 edge, fingers spoon-shaped within, setose and somewhat gaping. 



Ambulatory appendages: the meri are spinose on their edges; the ante- 

 rior border of the carpus of the first pair is furnished with a crest whose 

 edge is even and entire; the propodite of the fir.st pair is crested along the 

 proximal half of its anterior border, while the distal half is armed with two 

 or three teeth; the carpus and propodite of the second and tlnrd pan-s are 

 toothed on the anterior margin, the propodite of the third pair is also toothed 

 on the posterior margin ; all the segments are hirsute, especially the dacty i. 

 When the legs are closely folded against the sides of the carapace a wide 

 interval is left between the carpi of the cheliped au.l fust pair of ambulatory 



