SUPPLEMENT. 185 



" Report on South European Marine Invertebrata," observed that 

 at Algiers the typical form inhabits the littoral zone, while the 

 form called striatula occurs only at a depth of 30 f. ; and in a 

 communication from him to Prof. E. Eorbes (Ann. N. H. 2nd 

 ser. iii. p. 509) he says, with reference to his dredgings oft' 

 Cape St. Mary's in 15-30 f., " The Venus from that locality 

 appears to be intermediate between the gallina of the Medi- 

 terranean and striata [striatula'] of our seas, so that they may 

 at last prove to be only varieties of the same species." Prof. 

 Homer has lately restored V. pallida of Turton as a species I 



P. 349. — Tapes attreiis. 



Body pale yellowish-white, with reddish-brown spots or 

 blotches round the orifices of the tubes : mantle thick and 

 fleshy, more or less open in front, so as to form a slit ; edges 

 irregularly scalloped: tubes cylindrical, short, united nearly 

 to their orifices ; the incurrent tube is the longer of the two, 

 and streaked inside lengthwise with yellow or flake-white 

 lines ; its orifice is fringed with 6 short cirri or tentacles and 

 the same number of intermediate tubercles; the excurrent 

 tube has also its orifice fringed, but less thickly, and the cirri 

 are equal in size : foot large, laterally compressed, and wedge- 

 shaped at the point. 



Roach river or estuary, Essex. F. Scandinavia (Sars and 

 others); Antwerp Crag (Nyst); Pisa (Manzoni) ; Monte Mario 

 (Rigacci) ! Exceedingly prolific, Poli. According to E. v. 

 Martens this is the Venus edulis of Chemnitz and V. lutesctns 

 of Gmelin. Yar. ovata. Herm (Marshall)!; Lake Fusaro, near 

 Naples (J. G. J.). 



P. 352. — T. virgineus. E. Norway (Sars) ; Prussia (Be- 

 rendt ) ; Italy (Scacchi and others) ; Rhodes (Mus. J. d. PI.) ! 

 E. Finmark, 5-40 f. (Sars); Holland (Herklots) ; N.W. 

 France (Guestier, /. Fischer). 



P. 355. — T. pitllastra. F. All our posttertiary deposits, 

 as well as those from Norway to Sicily. E. Holland (Herk- 

 lots), and throughout the European seas ; Japan (Allcock) ! T. 

 geographicus is undoubtedly the same species. Venus Tenorii, 

 Costa, and T. Senegalensis, Romer. 



P. 357, 1. 13 from bottom, for " arctica" r. " rugosa" 



P. 359.— T. DEcrssATus. F. Torquay (Godwin-Austen); 



