345 



compressed: length, 17'25 mm.; height, 13'25 mm.; breadth, 

 5"75 mm. 



[ts further distribution is West-Greenland, Spitzbergen and 

 the Kara-Sea; its vertical distribution is from ca. 20 — 40 fms. 

 In a fossil state it occurs in the newer glacial Yoldia-clay in 

 the northern Denmark (Vendsyssel), southern Norway (Moss) 

 and the south-western Sweden (Halland) (comp, besides Jensen 

 1. c, with the there given detailed record of the synonymy of 

 the species, and the appendix in Vidensk. Medd. Naturh. Foren. 

 Kbhvn. 1905, p. 149). 



Tellina Torelli is with regard to size between T. moesta 

 Desh. and T. Loveni Steenstr. The largest recent speci- 

 men, which I have seen, measures 17'25 mm. in length; the 

 largest fossil (from Vendsyssel) measures 20'5 mm. It is a 

 characteristic species which at once may be recognized by its 

 oblique shape, moreover varying somewhat, sometimes rather short 

 and high, nearly triangular, sometimes comparatively lengthened, 

 approaching the oval. As another characteristic feature may 

 be mentioned that the antero- and portero-dorsal margins 

 together form a typical, almost right angle or a little larger 

 whose top is formed by the projecting umbo. The short abruptly 

 truncated posterior end and the comparatively strong cardinal teeth 

 are also characteristic. The area situated behind a line from 

 the umbo down to the postero-ventral angle is strongly in- 

 clining. The extent of the palliai sinus reminds of Tellina 

 calcaria Chemn.: the palliai sinus is on the right valve low and 

 short (fig. 3 c, ^), on the left valve it is considerably higher and 

 longer and reach very near to the impression of the anterior 

 adductor (fig, 3 d^ h). 



Tellina (Macoma) moesta Deshayes. 



Tellina moesta Deshayes, Proc. Zool. Soc. Lond., 1854, p. 361. — 

 Tellina sabulosa var. an sp. п.? Mörch, in Rink's Grønland, 1857, p. 90. — 

 Tellina moesta Reeve, Conchol. Icon. XVII, 1870, Tellina pi. 52, sp. 307; 

 Mörch, in Rupert Jones, Arctic Manual, 1875, p. 131; idem, in Rink's Dan. 



