65 



into a wide lamella, which has the edges slightly, and the tip 

 very much, curled inwards. 



In the second pair in the male the peduncular joint is long 

 and robust. The distal joint is of peculiar structure, being 

 slightly twisted into a spiral ; near the tip there is a wide ear- 

 shaped plate standing out almost at right angles to the axis 

 of the joint. The rounded margin of this plate, which half 

 encircles the joint, is densely covered with short bristles. It 

 is much thicker at one side than the other, and the bristles all 

 point towards the thick part. A few setae are present on the 

 tip of the joint, and below the plate-like expansion there is 

 a fringe of longer setae on the margin. The other pairs of pleopods 

 are represented by mere rudiments in the male. 



The uropods are thin membranous structures, and are folded 

 under the abdomen with the telson. They have no transverse 

 suture on either branch ; their lateral and posterior edges are 

 setiferous. 



When alive the animal is bright scarlet, and the eyes have 

 a bronze lustre. 



Size. — -The largest specimen taken by the Helga measures 

 44 mm., when the abdomen and telson are fully extended. 

 Milne-Edwards and Bouvier mention specimens 52 mm. long. 



General Distribution. — The species is known hitherto only 

 from those regions with which the names of the Travailleur, 

 Talisman, and Caudan are associated. It has been recorded 

 from stations ranging from Rochefort, in the Bay of Biscay, 

 to the Canaries. More recently it has been taken further north, 

 two specimens having been captured by the Huxley, in the 

 latitude of Brest, long. 8° 13' W., (Kemp). The specimens 

 taken by the Helga extend the range of the species still 

 further in a northerly direction. 



Irish Distribution. — 



Helga. 



CXX.— 24 VIII '01. 77 mis. W.N.W. of Achill Head, Co. 



Mayo, 382 fms. Trawl.— One. 

 S. R. 223.— 12 V '05. 53° 7' N., 14° 50' W., 410-500 fms., 



coral. Trawl. — Two, 44-34 mm. 



Vertical Distribution. — The depths in which the species has 

 been taken range from 382 fms. {Helga) to 929 fms. (Caudan). 

 The other specimens were captured in over 444 fms. (Huxley), 

 517 fms., and 482 fms. (Travailleur and Talisman), 



Family GALATHEIDAE. 



There are two sub-families : — 



A. — Integument crisp ; exopodite of the 

 first maxillipedes terminates in a flagellum ; 

 eyes facetted and well pigmented, . . Galatheinae, 



