Q6 Proceedings of the Royal Physical .Society. 



Family, PAGUEID^. 

 Genus, Diogenes, Daua. 



Dana, U.S. Explor. Exped. Crust., pt. i., p. 438 (1852); Stimpson, Proc. 

 Acad. Nat. Sc. Phil., p. 70 (1858). 



Ophthalmic segment furnished with a movable rostriform 

 tooth distinct from the front. Antennal acicle broad at the 

 base, occasionally bifid; the flagellum ciliated. Chelipedes 

 unequal (the left larger), the fingers acuminate. Second and 

 third pair of feet with long dactyli, the fourth pair subcheli- 

 form. Abdomen of male without genital appendages. 



Diogenes varians. 



Pagurus varians, Costa, Fauna del Regno di Nap. Crust., p. 9, pi. ii.,fig. 2 



(1838). 

 Pagurus arenaruts, Lucas, Anim. artic. de I'Alg. Crust., p. 33, pi. iii., fig. 7 



(1849). 

 Diogenes arenarius, Stimpson, Proc. Acad. Nat. Sc. Phil., p. 71 (1858). 

 Diogenes varians, Czerniavsky, Materialia ad Zoograph. ponticam comparatam, 



p. 127 (1868); Heller, Crust. Sudl. Europa, p. 170, taf. v., figs. 13, 



14 (1863); Miers, Ann. Mag. Nat. Hist, ser. 5, vol. viii., p. 272 (1881). 

 ? Pagurus pugilator, Roux, Crust, de la Med., pi. xiv., fig. 3 (1830) ; White, 



List Crust. Brit. Mus., p. 59 (1847). 

 Pagurus pontiacs, Kessler, Bericht iiber seine Reise an das Schwarze Meer 



(1859). 

 Pagurus Dilwynii, Spence Bate, Ann. Mag, Nat. Hist., p. 320, pi. x., fig. 



11 (1851) ; Bell, Brit. Crust., p. 377 (1853) ; White, Pop. Hist. Brit. 



Crust, p. 78 (1857). 

 Eupagurus Dilwyni, Stimpson, Proc. Acad. Nat. Sc. Phil., p. 74 (1858). 

 ? Diogenes Irevirostris, Stimpson, I.e., p. 71 (1858); Studer, Gazelle Crust. 



Abandl. d. k. Akad. d. Wiss., Berlin, p. 23 (1883). 



Eostriform spine simple and acute, not exceeding the 

 ophthalmic squames ; the eye stalks not equal in length to 

 the frontal margin, and their basal scales serrate on the outer 

 and distal margins. The left chelipede strong and robust, 

 the arm, wrist, and hand of nearly equal width, the two 

 latter joints slightly spinose on their upper margins, and 

 hairy; the fingers toothed on their inner margins. Eight 

 chelipede weak, the arm short and thick, the joints granu- 

 lated and slightly tuberculate. Ambulatory limbs fairly 

 robust, hairy, with the dactyli longer than the propodi. 



