﻿COPHPOIJA 



'45 



exterior margin distincth- produced, and liave, in addition to powerful vermiform sensory appendages, 

 at least 5 amalliforni or brush-shaped ones. Tlie viaxillipcds are like those of 5. ii/aginis, and have, 

 in contrast to Farran's, a sensory seta in the middle of the second basipodite. 



T\vt firs f pair of legs has, as stated by Farran (fi.i;. i] I'l. \'II), a well developed Se in Re I, 

 attaining the middle of Re II. The srcni/J pair of legs is in main features like Farran's fig. 15 (cf. te.Kt- 

 fig. 60 b), but the outer marginal tooth of the second basipodite is well developed, and the inner margin 

 is near the tip produced into a short curved tooth; the arrangement of the spines on the posterior surface 

 differs only in minor details, f. inst. by the presence of spines in Re I, but in addition to the spines 

 areas of short teeth were found on the posterior surface of the exopodite; the anterior surface seems 

 to .be smooth; the first inner segment has a well developed Se; the St of the third outer .segment has 

 about 70 partly fused teeth (fig. 9 a) without the characteristic ba.sal fenestra, (glandular pores .seem 

 to be present in Re II and III. The third pair of legs has the iimer margin of the second basipodite, 

 a little proximally to the Si, produced into a longer or shorter, generally broken, .styliform process, 

 corresponding to that of the second pair of legs; this process is beset inwards as well as terminally by 

 the most distalh- placed marginal bristles, and in this wax- 

 forms a prolongation of the inner margin proper; the 

 third basipodite is anteriorh' and terminally prodxiced into 

 a distinct slender spine medial to the insertion of the endo- 

 podite (text-fig. 60c), like that oiScoffocalai/iis. On the anterior 

 surface of the third feet, except in the third outer segments, 

 a delicate spinulation is found; the spinulation of the 

 posterior surface is like P'arran's description, but a basal 

 group is found in the third outer segment. The fourth 

 pair of legs (text-fig. 60 c) has the second basipodite \-ery 



clum.sy without marginal bristles, and is suddenly restricted near the tip; on the posterior surface trans- 

 versely placed .short spines were observed in Ri II, and in a less" degree in Ri III, but the anterior 

 surface is covered all over with areas of more or less delicate teeth; the serrations of the terminal 

 setae are more or less fused in the middle; a glandular pore is observed not onlv in Re II and III, 

 but in Re I as well. The />>/// pair of legs has the exopodite divided into a short basal and a longer, 

 .somewhat enlarged outer segment, po.ssessing a shorter terminal and a longer more proximal seta. 



The anterior portion of the lahrmn proper is distinctly more produced in front than .seen in 

 fig. 8 a of S. niagiuis; the arrangement of the setae i.s, as seen in fig. 9 b, rather characteristic; the an- 

 terior curved group of long delicate setae is posteriorly on each side divided into an outer and inner 

 portion; in the middle an anteriorly convex row is found; for further details I refer to the figure. 

 The oral surface of the labrum (PI. \TI fig. 9 e) shows a rather characteristic structure, bearing most 

 resemblance to that o\ Scottocalaiius; the first oblique group of the longitudinal series is smaller than 

 in .s: luagiius, and it is followed b\- two or three more or less fused groups of fairly long setae, between 

 which the transverse median rows are placed, behind the mentioned groups an oblique one of more 

 slender hairs, corresponding to the square one of .S". ii/ngiius is found. Laterally, in front, two groups of 

 delicate hairs arc found. No distinct laiuiiia lalualis was ob.served; in front of the .serrnla 6-dentata an 



25* 



Text-fig. 60 Scapliocalamis obtusi/rons G.O Sars f?. 



a. Head X 



b. Pes II .sin in ant view X 58. 



r. Pes IV sill in ant. view X 5^. 



