220 



«« THETIS " SCIENTIFIC RESULTS. 



telson, the outer distal half of the margin and the extremity with 

 numerous long setse, each of which arises from a small notch ; 

 inner ramus very narrow, about eight times as long as broad at 

 the base, of nearly equal width to near the blunt apex, which 

 bears six long setae. The succeeding pairs have both rami 

 foliaceous twice as long as broad, and each with a notch-like con- 

 striction at the sides in the middle. Uropods a little shorter 

 than the telson ; outer ramus ovate ; the margins minutely 

 crenate and sparsely ciliate, equal in length to the first joint of 

 the inner ; the latter has the distal border excavated and the 

 angles produced ; terminal joint longer than broad, narrower 

 than the first ; inner margin straight glabrous ; apex and outer 

 margin rounded, slightly crenate and ciliate. 



Total length 





9-5 mm 



Length of cephalon ... 





0-6 „ 



„ ,, peraeon (breadth between 



Lateral 





pigmented lines of five segments 



•5) ... 



7-5 „ 



Total length of pleon (telson included) 



... 



1-6 „ 



Length of superior antennae ... 





0-6 „ 



„ „ inferior „ 





0-7 „ 



Total length of first leg 





1-85,, 



„ „ „ third „ 



... 



215,, 



„ „ „ sixth „ 





2-5 „ 



„ „ „ pleopod 





1 „ 



,, „ „ telson 





1 „ 



,, ,, ,, uropod 



... 



0-9 „ 



„ „ ,, outer ramus ... 



... 



0-7 „ 



Four examples obtained off Wata Mooli, in 54-59 fathoms. 



PARANTHURA INVOLUTA, sp. nov. 



(Figs. I8a-g.) 



Station 37. 



Body elongate, much wider in the middle than at the extremi- 

 ties. Cephalon a little longer than broad, front bisinuate and 

 tridentate; the denticles are equal and their apices are in a 

 transverse line. Sides convex, converging towards the rounded 

 and somewliat produced lateral angles of the front. First seg- 

 ment nearly twice as long as broad, equal in width througliout 

 and to the length of the cephalon. Second longer, slightly 



