108 



rarnns of the uropoda is less robust and scarcely longer than the inner, the 

 terminal joint of which has 3 lateral spinules, whereas only 2 are found in 

 the typical form. 



The figures given on the last plate of the adult male are from specimens 

 kindly sent to me by Mr. Th. Scott, who collected them in the Firth of Forth. 

 There cannot be any doubt that this is in reality, as suggested by the above- 

 named distinguished zoologist, the male of D. Ratlikei : and I think I am right in 

 considering it to belong to the present variety, which seems to be that exclusively 

 found off the British Isles. As seen from the figures, it is of a very slender 

 form, and on the whole resembles the males of other species of the genus, 

 having a well-marked serrated keel along the sides of the carapace, and the caudal 

 segments partly spinulous. It is, however, easily proved to belong to the present 

 species by the structure of the several appendages. 



Occurrence. - This variety seems to be much more generally distributed 

 off the Norwegian coast than the typical form, as it occur from the Christiania 

 Fjord to Vads0, and in some places in great profusion. 



Page 71. Leptostylis villosa. 



Distribution. Three well-marked female specimens of this form were 



sent to me from Mr. Th. Scott, who collected them in the Firth of Clyde. 



Page 74. Pseudoeuma eercaria. 



Occurrence. I found this form last summer in great abundance 



off the Jsederen coast, outside Sirevaag, in a depth of 6 10 fathoms, fine 

 sandy bottom. 



Page 76. Pseudocuma similis. 



Occurrence. This form, which had previously only been observed at 

 Skudesnses, occurred not unfrequently, together with the preceding species, outside 

 Sirevaag. 



Distribution. According to a communication from Mr. Th. Scott, some 

 specimens of this species were taken by him at the "seaweed limit' 1 of the 

 estuary of the Clyde. 



Page 77. Petalosarsia declivis. 

 Distribution. Firth of Forth, Moray Firth (Th. Scott). 



Page 84. Campylaspis rubieunda. 



Distribution. Firth of Forth. Firth of Clyde. Moray Firth. Loch 



Fyne (Th. Scott). 



