256 



" THETIS " SCIENTIFIC RESULTS. 



second maxillae are subequal in width, and attain to the same 

 level. Palp of maxillipedes short, with the superior setiferous 

 lobes well defined. The third joint is much shorter than the 

 second or either of the two following. First pair of legs shorter 



and less robust than any of those 

 following ; the last pair are 

 rather long and slender. The 

 inferior borders of the fourth, 

 fifth, and sixth joints are armed 

 with numerous stout pectinated 

 spines ; there is a well-defined 

 series on the borders, and a 

 number scattered on the lower 

 lateral surfaces. The third joint 

 of all the legs except the last 

 have the superior box'der promi- 

 nently angulated in the middle, 

 and tipped with a stoutish spine. 

 Fourth and fifth joints of the 

 second to the fifth legs nearly 

 as broad as long, with the su- 

 perior borders prominent, and 

 ornamented with one or two 

 spines at the distal extremity ; 



Second Pleopod. 

 Fig. 266. 



seventh joint terminating diste^lly with two very unequal spines, 

 the superior one large, strong, and curved, the inferior one short 

 and stout. 



Inner ramus of the first pair of pleopods 

 rather narrow, tapering from the base to an 

 obtuse apex; outer ramus ovate. Inner ramus 

 of the second pair about twice as long as broad ; 

 the stylet is subf usiform in its lower two-thirds, 

 the apical fourth is long, curved and slender. 

 Outer rami of the three succeeding pairs, with 

 a sutural line, both rami of these are ciliated 

 at their distal extremity. The outer ramus 

 of the fifth pair bears five bead-like lobes 

 covered with rasp-like teeth ; there is a pair at 

 the distal end, one on the sutural line, and 

 two situated at the distal fourth of the inner 

 border. Uropods oblong, equal and folding, 

 the outer truncated at the extremity. 



FiFTU Pleopod. 

 Fig. 26c. 



Total length of body, 9 mm. ; breadth, 4. .5 mm. 



This species is allied to Sphceroma aspera, Has well. 



One specimen obtained off Coogee and two off Wollongong, 



