250 Rev. Cauon A. M. Norman on British Mysidse. 



Macropsis Slahheri (Van Beneden). 



1778. " Steurgernaal met trompetwijse oogen," Martin Slabber, Natuur- 



kundige Verlustigingen, pi. xv. figs. 3, 4. 

 1860. Podopsis Slabberi, V. Beneden, Recb. sur la faune litt. de Bel- 



gique, Crustac(5s, p. 18, pi. vi. 

 1863. Mysis Slabberi, Goes, Crust, decap. podopb. mar. SueciiB &c. 



p. 16. 

 1867. Podopsis Slabberi,MsiVcusen, "Zur Fauna des Scbwarzen Meeres," 



Arcbiv fiir Naturg. 1867, p. 359. 

 1876. Macropsis Slabberi, G. O. Sars, Middelbavets Mysider, p. 28, 



pis. xi.-xiii. 

 1882. Podopsis {Mesopodopsis) Slabberi and {Parap)odopsis) Goesi, 



Czerniavsky, /. c. fasc. i. p. 145. 



1882. Podopsis {Pa7-apodopsis) cornuta, id. ibid. p. 149, pis. i., ii., and 

 iii., figs. 1-15. 



1883. Podopsis Slabberi, Goesi, and cornuta, id. ibid. fasc. iii. pp. 48, 49. 

 1886. Macropsis Slabberi, Carus, Prod. Faun. Medit. p. 466. 



Basfil joint of antennules subequal in length to rest of 

 peduncle. Antennal scale very narrow, subulate, subequal 

 in length to peduncle of antennules, ciliated all round ; 

 second joint with a pair of lateral and three terminal setge. 

 Telson short, about one third the length of the outer uropods, 

 exclusive of terminal portion about as long as the breadth at 

 the base ; hinder portion of lateral margins with three to 

 seven spines ; the extremity of the telson is projected beyond 

 the lateral margin in somewhat triangular form, but the apex 

 is rounded ; the entire margin of this terminal portion is 

 serrated. Legs liaving the tarsus composed of seven to eight 

 articulations. Inner uropods with a single spinule on the 

 inner margin, a little behind the otolith. Outer uropods 

 much longer than inner, narrow, ciliated all round. Length 

 11-13 millim. 



Hah. Granton, Firth of Forth, 1884 {J. R. Henderson) ; 

 Falmouth {G. C. Bourne). 



Distribution. Naples, 1887 {A. M. N.) ; Bahusia, Sweden 

 (Loven) ; Belgium {Van Beneden): Mus. Nor. Denmark 

 {Meinert) ; Holland (P. P. G. Hoeh) ; mouth of the Seine 

 {de Kerville) ; in the Mediterranean, at Goletta, Syracuse, 

 and Spezzia {G. 0. Sars); Black Sea {Marcusen dac.) ; Odessa 

 and Sebastopol {Czerniavsky)''^. 



* Tbe embryology of tbis species bas been studied by Boutcbinsky (P.), 

 * Observations sur le d^veloppement de Parapodopsis cornuta, Czem.,' 

 1888 (in Russian). 



