Report on the Crustacea Schizopoda of Ireland. 229 



3fuseum, Duhlm. — No. 195, 1895. Roundstone. 



Previous Irish Records. — Port Magee entrance, Valentia Harbour (A. 0. W.*): 

 at surface, off N. and. N.E. Ireland (Herdman). 



Distribution. — E. and W. Scotland ; Whitby ; Starcross (A. M. N.*) : Dogger 

 Bank (T. S.) : Irish Sea (A. 0. W.). 



Sweden ; Denmark ; mouth of the Seine (A. M. N.*) : Heligoland, coasts of 

 Germany and S. Norway (Ehrenbaum) : Channel Islands (Walker and Hornell). 



Gastrosaccus sanctus (Van Beneden). 



Survey. — Station 145, Killeany Bay, Aran. April 8th, 1891. 



3Iarine Lahoratori] . — Mouth of Killeany Harbour, 25th March, 1899 ; off Bofin 

 Harbour, 17 fathoms, 17tli July, 1899 ; Bofin Harbour, 4th and 5th August, 1899, 

 common in surface tow-nets at night, but only one specimen found, in a bottom 

 net, during the day time. 



No Previous Irish Record. 



Distribution. — Irish Sea (A. 0. W.) : Plymouth (W. Garstang!): Jersey 

 (A. M. N.*). 



Belgium ; Boulonnais; Naples; Goletta (A. M. N.*) : Black Sea ; Sea of Azov 

 (Sowiuski, 1894, 1895). 



Most of the sjjecimens from Bofin have practically no trace of the upturned 

 processes of the hind margin of the carapace, though agreeing in other respects 

 with- the type. The same peculiarity has been observed in material from 

 Plymouth, and appears to require further attention. 



Genus Haplostylus, Kossmann. 



This genus is distinguished from Gastrosaccus by the rudimentary condition 

 of the inner branch of the third pleopod of the male. Forwardly directed lobes 

 of the posterior margin of the carapace are invariably absent. f 



Haplostylus Normani (G. 0. Sars). 

 Gastrosaccus Norxiiani, G. 0. Sars, et auct. 



Not in the Surveij Collection. 

 Irish Record.— 0^ Valentia (A. M. N.*). 

 Distribution. — Rockall (A. M. N.*). Plymouth. 

 Mediterranean (A. IM. N.*). 



f We are indebted to Mr. W. T. Calmau for the reference on which our diagnosis is founded. 



TEANS. EOr. DUB. SOC, N.S. VOL. VII., PAET VII. 2 K 



