NO. 1342. SYNOPSIS OF THE ASTARTIDyE— DAL L. «)8«.) 



This species was named b};- Stimpson in manuscript A. /r//.s, and tW\s 

 name, though never described, has found its way into the htcraturc. 

 Through Dr. Jeti'reys it has also been confounded with .1. erenata 

 Gray and ^1. crehrlcostata Forbes, neither of which is closely related 

 to it. The shell is ovate, compressed, pale or yellowish brown, the 

 deei)-water specimens sometimes nearly white, and it is sculptured 

 with numerous even, low, concentric ripples, which are obsolete in 

 the adult behind. Specimens reach a length of 39, with a height of 

 31 and a diameter of 10 mm. 



ASTARTE (SUB^QUILATERA var?) WHITEAVESII Dall, 1903. 



Gulf of St. Lawrence and south to Long- Island Sound, in 67 to 428 

 fathoms. 



This, which is the crc'bricostata of Dawson," has also been called 

 ci'enata and lens, while I find it labeled by Jeffrej^s ".S'?/Zc«to variety 

 nana.,'''' though it has no close resemblance to sulcata Da Costa. It 

 resembles the j'oung of suhdeqnilatera., but is more convex; has th(» con- 

 centric sculpture continued to the margin Ijehind, and is, on the whole, 

 rather darker in color. It was dredged al)undantly by Whiteaves at 

 Gaspe, in 200 fathoms. 



ASTARTE POLARIS Dall, 1903. 



Polar Sea, dredged off Hare Island, Davis Strait, in 90 fathoms, and 

 is also found near Bering Strait. 



Plump, subtrigonal, with olive-brown periostracum, thin shell, deeply 

 excavated lunule, and delicate hinge. The sulcation of the margin 

 appears only with complete maturit3\ The concentric sculpture is tine, 

 close, and low, sometimes degenerating into mere striation. Exter- 

 nally the shell recalls Corlncula. 



ASTARTE CRENATA Gray, 1824. 



Shannon fiord, East Greenland (as crehricostata Moebias): Prince 

 Regent Inlet, Melville Island and adjacent waters (Parry); and south 

 to the Gulf of St. Lawrence, in 16 to 200 fathoms. 



Some of the specimens collected by the Parry expedition, from 

 which Gray described the species, are fortunately in the Jeffreys col- 

 lection and enable me to fix this species, which has also been named 

 A. olUnga by Sowerby in 1854. It appears to 1)e rai-e, and is a thin, 

 inflated, elongate-oval shell, delicately, closely, concentrically striated 

 or grooved, with the sculpture often obsolete below and stronger near 

 the beaks. It is a smaller, thinner, and much more inflated shell than 

 suhsequRatera. and of a pale straw color or light brown color somewiiat 



polished when in fine condition. ^ 



"Can. Nat., 1872. 



