A Sijnopsis of the British Paguridcc. 73 



with two irregular depressions. Ambulatory limbs slightly 

 spiny on the anterior borders; the digits pubescent, and 

 furnished with delicate spines. 



^«5.— Falmouth (Cocks) ; Firth of Forth ^ (Howden) ; off 

 the south coast of Devon and Cornwall, 55 fathoms (Bate 

 and Eowe). 



A Mediterranean species extending into the Adriatic. 



Genus, Spikopagurus, Stimpson. 



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



Subgenus, Anapagurus, Henderson. 



Henderson, Clyde Decapoda, Proc. Glasgow Nat. Hist. Soc. (1885-86). 



Carapace depressed in front; the transverse suture very 

 deep. Ocular peduncles short and stout ; the cornese dilated. 

 Chelipedes unequal; the right larger. External antenna3 

 with long and slender flagella, which are usually ciliated ; 

 the acicle slender. Ambulatory limbs long and slender. 

 Males furnished with a short curved genital appendage 

 attached to the coxa of the fifth left leg. Females with three 

 modified abdominal limbs on the left side, to which the ova 

 are attached ; these are also present, though rudimentary, in 

 the males. 



Anapagurus difi'ers from Spiropagurus in the form of the 

 male sexual appendage (which is coiled spirally in the latter), 

 and in the unequal chelipedes. In Spiropagurus, also, the 

 ambulatory limbs — especially their meral joints — are more 

 robust, and the dactyli are proportionately longer, and ciliated. 

 The external maxillipedes are also much shorter in Ana- 

 pagurus. In the allied Gatapagurus, A. Milne-Edwards, 

 ( - HemipaguruSy S. I. Smith), the male appendage is 

 attached to the coxa of the fifth right leg.^ 



^ This locality is, to say the least, suspicious. Perhaps Eupag. 

 var. Kroyeri, which is not uncommon in the Firth of Forth, has been mis- 

 taken for the present species. 



2 The "Challenger" Collection of Pagurid^ contains new species oi Ana- 

 pagurus from the Canaries, Cape Verde Islands, Cape of Good Hope, and 

 Port Jackson. 



