70 BULLETIN OF THE 



developed into a broad oval lamella about a third as long as the outer ramus, 

 with both margins setigerous and the inner tliickened and bearing a slender 

 stylet armed as usual with minute hooks. The inner ramus of the appendage 

 of the second sonute bears the two stylets usually characteristic of the male. 



A small and imperfect female specimen appears not to differ from the males 

 as above described except in the usual sexual characters. The inner ramus of 

 the first abdominal appendage is a very small lamella nearly four times as lung 

 as broad and furnished with very long and slender setre. 



The surface of the carapax and abdomen is very nearly naked, but is rough- 

 ened by minute granular projections. 



The number and structure of the branchia; seem to be essentially the same 

 as in the typical species of Pandalus, but there is api)arently no epipod at the 

 base of the fourth leg, so that the branchial formula is as follows : — 



Somites. VII. VIII. IX. X. XI. XII. XIII. XIV. Total. 



Epipods, 1111110 (()) 



Podobrancbiffi, 10 1 



Arthrobranchia;, 2 11110 6 



PleurobranchiiE, 111115 



12+(6) 



The most perfect of the three specimens in the collection affords the follow- 

 ing measurements : — 



Station 330 



Sex ^ 



Length from tip of rostrum to tip of telson ..... 80+ mm. 



" of carapax excluding rostrum 16.0 



" of rostrum . . 16+ 



" of antennal scale 11.7 



Breadth of " " 3.0 



Length of .sixth somite of abdomen 10.0 



Height " " " 5.0 



Length of telson 13.0 



Station. N. Lat. W. Long. Fathoms. Specimens. 



305 41° 23' 15" 65° 51' 25" 810 l^. 



323 33^19' 0" 76° 12' 30" 457 1?. 



330 31° 41' 0" 74° 35' 0" 1047 l^. 



Miersia gracilis, sp. nov. 



Plate XI. Figs. 4 - 4*. 



Young im,ale. — The carapax is slightly compressed, and including the rostrum 

 only a little shorter than the abdomen ; the dorsum is rounded posteriorly, but 

 carinated in front of the middle, and rises anteriorly into a high and sharp crest 



