98 MR JAMES COSMO MELVILL AND MR ROBERT STANDEN ON THE 



Fissurella picta (Gmel.). 



Un Lepas rare de Magellan, etc., Davila, Cat. Syst. et Raisonne des Cur., etc., i., p. 88, tab. iii., 



fig. 6, 1767. 



Lepas ovata ampla, etc., Martini, Syst. Conchyl. Cat., vol. i., p. 131, tab. xi., fig. 90. 

 Patella picta, Ginel., in Syst. Nat., xiii., p. 3729. 

 Fissurella picta, Gould, U.S. Expl. Exped., atlas, tab. 31, fig. 469, animal. 



Hob. Dredged in 6 fathoms, Port Stanley, Falkland Islands, February 2, 1904. 



Tugalia antarctica, sp. n. (Plate, fig. 1). 



T. testa alba, oblonga, conico-depressa, parmophoroide, apice incurvo, postic4 subimpendente, anticd 

 obscure^ intus sulcato, superficie extus pulcherrimd cancellata, striis tenuissimis, apud latera crassioribus, 

 decorata, undique concentric^ delicate 1 et arete striata, et liris incrementalibus irregulariter prsedita, intus alba, 

 nitida, marginibus minute' crenulatis. 



Alt. 7, long. 23, lat. 13 mm. spec. maj. 

 4, 16, 10 min. 



Hob. Burdwood Bank, south of the Falkland Islands, at 56 fathoms. 



Allied to T. elegans, Gray, ossea, Gould, and parmophoroidea, Quoy, but of much finer 

 sculpture and more convex. The internal groove leading to the sinus is, indeed, 

 present, but very obscurely indicated, its region, however, being noted by the absence 

 of longitudinal sculpture dorsally. 



Section Azygobranchiata. 



Family Trochidse. 

 Photinula expansa (Sow.). 



Trochus expansus (Margarita), Sowerby, Conch, lllustr., figs. 16, 17. Philippi in Mart, and 



Chem., ed. ii., p. 254, tab. xxxvii., fig. 18. 

 Trochus (Photinula) expansus, E. A. Smith, Phil. Trans. Roy. Soc., vol. clxviii., p. 167 



(1879). 

 Photinula expansa (Sow.), H. and A. Adams, Gen. Rec. Moll., vol. i., pp. 427, 428 (1858). 



,, v. Jhering, in Nachrichtsbl. malak. Gesellsch. (1902), p. 99. 



Hob. Station 118, trawl, Burdwood Bank, at 56 fathoms, December 1, 1903 ; also 

 trawl, Port Stanley, Falkland Islands, at 1-10 fathoms, January 25, 1903. 



Photinula tseniata (Wood). 



Trochus tseniatus, Wood, Ind. Suppl., pi. v., fig. 12. 

 Margarita tseniata, Reeve, Conch. Icon., pi. xx., figs. 4, 4a. 



Photinula tseniata, H. and A. Adams, Gen. Rec. Moll., i., p. 427 (1858). v. Jhering in 

 richtsbl. malak. Ges. (1902), p. 101. 



Hob. Trawl, Port William, Falkland Islands, at 6 fathoms, January 1903. 



(ROY. soc. EDIN. TRANS., VOL. XLVI., 128.) 



