172 " THETIS " SCIENTIFIC RESULTS. 



Second pair of appendages equal and slender, first joint as long 

 as the two following combined, third joint shorter than the second, 

 thickly covered with branched setae on its distal half. 



Third appendage uniramous, margined with plumose hairs and 

 bounded on each side at the base by a linear series of long much 

 branched setae. 



Fourth and fifth similar to the preceding, except that there is 

 only one basal group of setae. 



Penultimate segment of the abdomen with a submedian 

 T-shaped impression ; appendages very unequal, the basal joint 

 on the left side tumid and grooved. Lateral margins of telson 

 deeply incised and lobate about the middle ; posterior margin 

 strongly emarginate, with two unequal lobes ; the right lobe is 

 small and bears a few setae and two or three spinules ; the left is 

 large and is bordered by some setae and six or more strong spinules. 



The females are somewhat smaller than the males, otherwise 

 they do not differ from the latter except in the usual sexual 

 characters. 



The appendages of the first abdominal segment are short and 

 two-jointed ; the first is rather stout and equal in length to the 

 second ; the latter is strongly setose distally and similar in shape 

 to the terminal joint of the second appendage in the male. 



The second, third and fourth appendages are biramous, the 

 fifth is uniramous. 



Colour. — Outer antennae and walking legs annulated with 

 narrow reddish bands. Chelae bright red, tips of fingers of larger 

 hand white, body and limbs scantily clothed with brownish hairs. 



Total length of body from tip of rostrum to end of telson 14 mm. 



Numerous examples, including man}^ ova-bearing females, were 

 obtained at Stations 28 and 33. 



Sixty-three specimens of this interesting species were obtained 

 off Manning Kiver and Newcastle Bight, in 22 to 27 fathoms. 



SYMPAGURUS, S. I. Smith. 



SYMPAGURUS DIOGENES, sp. nov. 



(Plate xxxiv., fig. 3.) 



Stations 35, 48. 



The anterior region of the carapace is slightly areolate ; the 

 calcification is limited to the sides and the front ; the latter has 



