I. '08. 84 



last three pairs it is also present on the merus, while in the 

 fourth and fifth it extends to the carpus. A suffusion of the 

 same colour occurs on the basal portions of the pleopods and 

 uropods. 



Tlio additional specimens do not throw any further light on 

 the affinities of Brcsilia. Caiman has already dealt with the 

 subject in detail, and has shown that the family must be re- 

 garded as occupying a rather isolated jDosition among Caridea. 

 Borradaile has recently (1907) included the Bresiliidae with 

 the Pasiphaeidae in his super-family Pasiphaeoidea, and al- 

 though some characters, such as the undistorted terminal seg- 

 ments of the second maxillipedes, lend colour to this view, yet 

 the highly specialized character of the mouth parts and last 

 three j)airs of pereiopods in the Pasiphaeidae suggests that the 

 creation of separate super-families for each might more ade- 

 quately express our knowledge of their mutual relations. 



Irish distribution. — The type was trawled by the Flying 

 Falcon in 750 fathoms, lat. 51° V N., long. 11° 50' W. The 

 other four examples were found at the following stations : — 



Helga. f ' '. 



S.R. 352— 5/8 /'06.— 50° 22' N., 11° 40' W. Soundings 750-800 



fathoms. Mid water trawP, 0-750 fathoms — One, 20 mm. 

 S.R. 477— 28/8 /'07.— 51° 15' K, 11° 47' W. 707-710 fathoms. 



Trawl Temperature at 700 fathoms 7-19° C— One, 



23 mm. 

 S.R. 499— 11/9 /'07.— 50° 55' N., 11° 29' W. 666-778 fathoms, 



Trawl. Temperature at 600 fathoms 8-22° C, salinity 



35-417^^— One, 20 mm. 

 S.R. 506— 12/9 /'07.— 50° 34' N., 11° 19' W. 661-672 fathoms. 



Trawl. Temperature at 600 fathoms, 8 -22° C, salinity 



35-537^^- One, 17 mm. 



Ve7'tical range. — 672-750 fathoms. 



Family PANDALIDAE. 



Until comparatively recently all the six species mentioned 

 in this paper were referred to the genus Pandalus. Three 

 genera, Pandalus, Plesionika, and Pandalina, are now recog- 

 nised by some authors. There can be no reasonable doubt 

 that Pandalina is established on trustworthy characters, but it 

 is by no means so clear that this is the case with Plesionika. 

 The question of the validity of the latter genus must wait 

 until that much needed work, a revision of the whole Pandalus 

 group, is undertaken ; for the present I have retained it as 



■I There is evidence to show that on this occasion the midwatcr trawl 

 was fishing on or very close to the bottom. 



