351 



Vener idae. 



Venus (Liocyma) ßuctuosa Gould. 



1900. Cape Dalton 9 — 11 fms. Clay 2 specim. (young) 



1900. Turner-Sound ca. 3 — ca. 300 — 



1900. Hurry-Inlet 10 — Clay 6 — 



1900. Cape Borlase Warren 10 — 1 — 



1900. Sabine-Island Laminarians ca. 20 — 



1900. Sabine-Island 5—3 — 1 — and 1 valve. 



The Germ ania-Expedition took it at Jackson- and Shannon- 

 Island, at depths from 4 — 30 fms. (Mob i us 1. с p. 252, s. n. 

 Venus astartoides Beck). 



The Kolthoff-Expedition of 1900 [took 5 specimens in 

 Mackenzie-Bay N. of Franz Joseph-Fjord, at a depth from 6V2 

 — 10 fms. and on muddy ground (Bägg 1. с. p. 49). 



The specimens at hand which go up to a size of 25 mm., 

 are rather variating with regard to the three dimensions; more- 

 over it will be seen from the measurements below that the 

 younger the specimens are the less elongated we will as a 

 rule find them to be. 



Length. Height. Breadth. 



a. 23*2 mm. 17*5 mm. 10*3 mm. 



b. 22-5 — 15-5 — 9-75 — 

 с 21 — 15 — 9 — 



d. 20 — 15 — 9-2 — 



e. 19-5 — 14 — 9-5 — 



f. 14-5 — 10-5 — 5-5 — 



g. 14-5 — 11 — 6 — 

 h. 14-25— 11-25— 6-5 — 



i. 3-5 — 3-1 — 1-75 — 



k. 3-3 — 3 — 1-75 — 



The umbones are always eroded when the animal has 

 passed its first youth. 



XXIX. 23 



