British Isopoda Chelifera. 327 



ISOPODA CHELIFERA. 



Fam. I. Apseudidae. 

 Genus 1. Apseudes, Leach. 



1. Apseudes talpa (Montagu). 



1866. Apseudes talpa, Bate & Westwood, (1) vol. ii. p. 148. 

 1880. Apseudes talpa, G. O. Sara, (101) p. 10. 

 1886. Apseudes talpa, Norman & Stebbing, (86) p. 81. 

 1886. Apseudes talpa, G. 0. Sars, (103) p. 267, pis. i., ii. 



Hab. Guernsey, and among stones, the Fleet, Weymouth 

 (A. M. N.). Tidemark, Jersey (Sinel & Horneil, 135). 

 Among roots of Laminar ia saocharina in 7 fath., near the 

 Tan Buoy, Cumbrae, N.B. (D. Robertson, 91). Montagu's 

 specimen was taken at Salcombe ; and Barlee procured it at 

 Plymouth. 



Distrib. Off Capri, Bay of Naples (.4. M. N.) ; Sardinian 

 coast {Prof. Emery) ; Adriatic {Heller as " Rhcea Latreillii") ; 

 Mus. Nor. , Messina [G. 0. Sars). The species recorded 

 under this name by Meinert from Denmark was subsequently 

 found by him to be A. spinosus. 



2. Apseudes Latreillii (Milne-Edwards). 



1866. Apseudes Latreillii, Bate & Westwood, (1) vol. ii. p. 153. 

 1880. Apseudes Latreillii, G. O. Sars, (101) p. 14. 

 1886. Apseudes Latreillii, Norman & Stebbing, (86) p. 82, pi. xvi. 

 1886. Apseudes Latreillii, G. O. Sars, (103) p. 290, pi. v. 



Hab. Guernsey; Jersey; mouth of the Yealm, Devon 

 {A. M. N.). Moray Firth (T. Edward in Mus. Nor.). 

 Plymouth (Biol. Lab.: in Mus. Nor.). Salcombe, Devon 

 (Stebbing, 124). 



Distrib. Coast of France {H. Milne-Edwards) ; Naples 

 and Golelta (G. 0. Sars). 



This is not Apseudes Latreillii, Claus ; but appears to be 

 the Rhoea Latreillii of Milne-Edwards, and certainly the 

 Apseudes Latreillii of Bate and Westw., of G. O. Sars, and of 

 Norman and Stebbing. Professor Claus, in the exhaustive 

 memoirs (16 and 17) on the morphology and physiology of 

 Apseudes, named the Adriatic species which he was investi- 

 gating Apseudes Latreillii, M.-Edvvards. Immediately after 

 the publication of his first memoir, Mr. Stebbing and myself 

 (8G, p. 133) pointed out that Claus's species was not that 

 understood by A. Latreillii, and we named this new Adriatic 

 form Apseudes hastifrons ; and Boas (5), arriving shortly 

 after at the same conclusion, named the same Adriatic form 



