JMr. T. Scott oil Scottish Crustacea. 3 



t'lioracic feet only ; tliis includes only one species, Oalathea 

 intermedin, Lilljeborg. 2nfl, sjjecies furnished vvitii epipo- 

 dites on tiie first three pairs of thoracic feet; this group 

 comprises G. squaniifera, G. nexa, and G. dispersa. 3rd, 

 species without epipodites on the thoracic feet; only one 

 Galathea {G. strigosa, Fabr.) belongs to this group. Our 

 Galat/iea belongs to the middle group, but the second and 

 third joints of the third maxillipeds differ somewhat in their 

 proportional lengths from the three species composing the 

 group. 1 am inclined, however, to ascribe it to the last one, 

 as the form of the rostrum agrees more closely with the 

 rostrum of that species. 



Pleurocrypta Patiencei, sp, n. 

 (PL I. figs. 3, 4.) 



This Pleurocrypta was obtained on a specimen of Caridion 

 Gordoni (Spence Bate) dredged in the Clyde by Mr. Alex- 

 ander Patience, of Glasgow, who kindly presented it to nic, 

 and in compliment to whom I have named it. 



The parasite was attached, as usual, under the cephalic 

 shield, and in the present instance on the left side, of the 

 Caridion, and is represented by both male and female 

 specimens. 



The female is distinctly unsymmetrical, and measures 

 about 4*6 millim. (nearly ^ of an inch) in length; the 

 greatest width, which is near the middle, is equal to about 

 two thirds of the length. The anterior end is obliquely 

 truncate, while posteriorly the sides converge somewhat 

 evenly and terminate in a bluntly rounded apex. Tlie 

 cephalon is deeply immerged in the first segment of the meso- 

 some, and in this respect the female resembles a female 

 Bopyrus or Popyroides. The uropoda consist of two small 

 elongate-oval plates, similar to those of Pleurocrypta micro- 

 brancliiata, G. O. Sars (P. intermedia, Giard and Bonnier), 

 and the pleopoda are also, as in that species, scarcely 

 developed. 



The male is subcylindrical and moderately narrow (fig. 4) ; 

 its entire length is about 1'6 millim. (j\; of an inch) and its 

 greatest widtli is equal to rather more than one third of the 

 length. The head is small, being scarcely one sixth of the 

 entire length ; it is broadly rounded in front and rather 

 narrower than the next segment. The segments of the 

 mesosome, though distinct, are not widely separated from 

 each other, and they are all of nearly equal size. The nieta- 



1* 



