40 ISOPODA. 



Fam. 5. 1 KO L ANI D JE.* 



Mouth-organs not formed for suction, but for biting and 

 masticating. All the peraeopods constructed for walking, 

 sometimes also densely furnished with plumose setre for 

 swimming ; fingers of three anterior pairs not hook-formed, 

 bearing one or more small setae, and terminating in a nail 

 which is shorter than the finger. Second pleopods of the 

 male with a stylet on the inner side. 



Genus 1. CIROLANA, Leach. 



Peduncles of antennae (lower antennse) five-jointed. Second 

 joint of maxillipeds furnished with clasping spines. First 

 pleopods not unlike the second, their inner branch submem- 

 branous. Basal joint of uropods much produced downwards 

 on the inner side. 



CIROLANA BORBALIS, Lilljeborg. (PL IV. fig. 1.) 



1851. Cirolana borealis, Lilljeborg, "Norges Crustaceer," CEfvers. 



K. Vet.-Akad. Handl. p. 23. 



1867. Cirolana spinipes, Bate & Westwood, vol. ii. p. 299. 

 1890. Cirolana borealis, H. J. Hansen, Cirolamdffi et Familiae 



nonnullfe propinquae Musei Hauniensis, p. 321, pi. i. figs. 1-10. 

 1897. Cirolana borealis, G. O. Sars, 1. c. p. 70, pi. xxix. 



Epimera (coxal plates) smooth. PeraBOpods not only very 

 spinous, but also furnished with numerous swimming-setae ; 

 the two upper joints of the last pair expanded and densely 

 beset with long swimming-seta?. Telson well rounded at the 

 extremity, and there furnished with 6-8 spinules ; uropods 

 rather narrow, the inner scarcely wider than the outer. 



Off Devon coast (A. M. N.). 



CIROLANA CRANCHII, Leach. (PL IV. fig. 2.) 



18fi7. Cirolana Cranchii, Bate & Westwood, vol. ii. p. 296. 

 1890. Cirolana Cranchii, H. J. Hanseu, 1. c. p. 341, pi. iii. 

 figs. 3-3 /. 



Epimera with a diagonal riblet. Peraopods very spinous, 

 but entirely devoid of swimming-setae ; the two upper joints 

 of last pair not expanded, and quite free from swimming- 

 setae. Telson narrowly rounded at the extremity, and bearing 

 ten spinules ; uropods with inner corner of basal joint pro- 

 duced downwards fully to half the length of the branches, 

 inner branch much wider than the outer ; the distal half of 



* Characters of the genera and species of this family are given, and 

 are chiefly founded on the admirable work of H. J. Ilansen. 



