202 Part III. — Eleventh Annual Report 



scarcely possible they cau be the same species. In Sunaristes the genital 

 segment of the female abdomen is equal to the entire length of the other 

 abdominal segments, the ovisacs are elongate ovate, somewhat pointed at 

 both ends, and reach to the end of the abdomen ; the buccal appendages 

 and swimming feet also differ. Further, when describing the habitat of 

 Sunaristes he says, loc. cit., ' Sont les compagnons intimes des Pagures, et 

 ' c'est avec la plus grande peine qu'on peut les en separer, non qu'ils 

 ' soient fixes sur eux comme le sont leurs parasites, mais par leur adresse 

 ' a ce cacher dans l'interieure on en dessous des coquilles que ceuxci 

 ' habitent.' But Canuella is free-living like Longipedia. Specimens both 

 of Paguri and their shells have been examined without obtaining a single 

 specimen of Canuella ; all our specimens have been obtained in dredged 

 material, or with hand-net, along with Longipedia and other free-living 

 species. In 1884 Dr Wilhelm Miiller described* a large copepod he also 

 had obtained living as a messmate with a species of Paguri \_Pagurus 

 (Eupagurus) bernJtardus], and which he named Longipedina paguri. 

 This may be the same species as that described by Hesse as Sunaristes 

 paeguri, but if so the description and figures of the one certainly differ 

 very widely from those of the other. 



Longipedina paguri, W. Miiller, has even a closer resemblance to 

 Canuella than Sunaristes has, but there are still important differences — 

 Longipedina is twice the size of Canuella, its length, exclusive of tail seta3, 

 being, as stated by Miiller, 2 -7 mm. It is a messmate with Pagurus 

 bernhardus, while Canuella is free-living. The second pair of swimming 

 feet in the male are different from those of the female, but in Canuella 

 they are alike in both sexes. 



' After a careful study of the descriptions and figures of Sunaristes and 



' Longipedina, we find that ' ' the difference, both in respect 



' of structure and habitat, between each of these and the species described 

 ' by us, is apparently so great that we prefer for the present to consider 

 ' the Forth species as distinct.' f 



Zosime, Boeck (1872). 



Zosime typiea, Boeck. (PL V. figs. 14-17.) 



1872. Zosime typiea, Boeck, ' Nye Slsegter og Arter af Saltvands- 



'Copepodar,' p. 14. 

 1880. Zosime typiea, Brady, ' Mon. Brit. Cop.,' vol. ii. p. 15, 

 pi. xxxix. figs. 1-12. 



Habitat. — In material dredged off Musselburgh, frequent. The Forth 

 specimens of this interesting and well-marked species agree thoroughly in 

 structural details with the description and figures in 'British Copepoda.' 

 The structure and armature of the first pair of swimming feet and of the 

 female fifth pair are characters by which the species is readily distin- 

 guished. 



Genus Jonesiella, Brady (1880). 



Jonesiella hysense, I. C. Thompson. (PI. III. figs. 1-6). 



1889. Jonesiella hy sense., I. C. Thompson, ' Proc. Biol. Soc. 

 ' Liverpool,' vol. viii. p. 193, pi. ix. figs. 1-10. 



This rather peculiar and interesting species was obtained among dredged 

 material collected near Eyebrough Kock — a short distance west of Fidra 



* Archiv fur Naturg., jahryuuy 50, 1st Band, p. 18. 

 t Ann. Scot. Nat. Hist. (April 1893), p. 94. 



