216 PROFESSOR CHARLES CHILTON ON THE 



duced inferiorly into one or two distal teeth, and with a spinule on the upper side ; fourth 

 joint twice as long as the third, bearing on its upper surface two calceoli, each on a 

 slight projection similar to those on the second joint of the upper antenna, a few fine setse 

 scattered on both margins of the joint and at the distal end (rest of antenna missing). 



Gnathopods (figs. 22 and 23) similar in general shape to those of A. serraticauda, but 

 not quite so slender, the second gnathopod having the propod much longer than the 

 carpus, sub-oblong, but expanding somewhat towards the palm, which is slightly oblique 

 and defined by one or two small spinules, the whole of the long hind margin bearing 

 short tufts or transverse rows of spinules. 



The perseopoda similar to those of A. serraticauda ; the third uropod rather short, 

 branches not very much longer than the base, lanceolate, and bearing spinules and 

 fine serrations on the margin ; telson cleft for about two-thirds its length, each half 

 oblong, posterior margin of each truncate and divided into about eight or nine fine teeth. 



I have only a few specimens of this species, and in most of them portions of the 

 antennae and some of the other appendages are broken off; but the arrangement of the 

 calceoli on the peduncles of the antennse seems characteristic, and differs from that in 

 any of the allied species known to me. 



Genus PARAMCERA Miers, 1875. 



Paramcera austrina (Bate). 



Atylus austrinus Spence Bate, 1862, p. 137, pi. xxvi. fig. 4. 



Paramcera australis Miers, 1875, p. 75. 



Attjloides australis and A. assimilis Stebbing, 1888, p. 914, pi. Ixxv., and p. 918, pi. Ixxvii. 



Megamcera fasciculata G. M. Thomson, 1880, p. 5, pi. i. fig. 5. 



Stebbingia gregaria Pfefler, 1888, p. 110, pi. ii. fig. 7. 



Stebbing, 1906, p. 358. 



Paramcera austrina Stebbing, 1906, p. 363, 1910A, p. 640, and 1910u, p. 450. 



Chilton, 1909A, p. 625. 



Specimens of this species were obtained from the following stations : 

 South Orkneys, Scotia Bay, Station 325 ; 10 fathoms. 



,, Scotia Bay, Station 325A ; dredge, 2-8 fathoms, gravel and 



clumps of weed ; temperature 29-30. 6th December 1903. 

 ,, ,, Scotia Bay, Station 325 ; dredge, 9-10 fathoms. April 1903. 



,, ,, Scotia Bay, Station 325 ; dredge, 4 fathoms, gravel bottom and 



clumps of weed ; temperature 29'l'. 3rd December 1903. 

 ,, Scotia Bay, Station 325; 5-10 fathoms; temperature 31'5'. 



2nd January 1904. 

 Falkland Islands, Station 118 ; shore. 7th January 1903. 



,, ,, Cape Pembroke, Station 118; shore pools. January 1903. 



Gough Island, Station 461 ; trap, 75 fathoms. 21st April 1904. 

 ,, ,, Station 461 ; off floating kelp. 21st April 1904. 



(ROY. soc. EDIN. TRANS., VOL. XLVIII., 498.) 



