1848.J 121 



Descriptions of two new Gtiiera andnew sjjtcies vf recent Shel/d-, <.\c. 



By T. A. Conrad. 



PARAPHOLiS, C07l. 



Shell pholas-like ; accessory valves two, nearly similar in form, elongated ; 

 one extending from the umbo to the posterior extremity; the other united to the 

 base; hinge plate thick; adductor muscular impressions greatly elongated, 



Pholas califor.sica, Con. Journ. Acad. Nat.Sc. vol. 7, p. ~3G pi. 15, fig. 35. 



Ckypto.iiya. 



Shell bivalve, closed or very slightly gaping posteriorly ; hinge similar to that 

 of Mya; pallial impression without a sinus, forming a right angle posteriorly. 



Sph.enia californica, Con. Journ. Acad. Nat. Sc, vol. 7, p. 234, pi. 17, 

 fig. 11. 



Lyonsia Jioridana. 



OsTEODESMA HYALiNA? CoTi. Procced. Acad. Nat. fee. Vol. 3, p. 24, pi. 1, 

 fig. 7. 



Leguminaria Jioridana. 



SoLEcrjRTHS FRAGiLis, var. Con. Proceed. Acad. Nat. Sc, Vol. 3, p. 24, pi. 

 1, fig. 10. 



[Plecfolithes, Con. 



PjJECTOSi YLCS HlLDRETIIlI, CoU. Vol. 8, p. 275, pi. 17, fig. 2. 



Triton nobilis. 



Body whorl dilated, humped on the upper part, about which three of the ribs 

 are prominent, rounded; the lower one broadest. Length 11 inches. Width 

 5J inch. (West Indies.) 



Teiton variegatcs. Reeve. Conch. Icon. pi. 1, fig. 3a. 



PsAMMOiiiA CALIFORNICA, Joum. Acad. Nat. Sc, Vol. 7, Pi. 19, Fig. 3. 



The Committee ou Mr. Cassia's descriptions of new Owls, reported 

 in favour of publication. 



Descriptions of Owls, presumed to be undescrihed, specimens of which are in the 

 collection of the Academy of Natural Sciences of rhiladelphicu 



By John Cassin. 



Efhialtes sagittatus, nobis. Adult 1 Entire plumage above rufous brown, 

 inclining to chesnut ; plumage of the head with small pale spots encircled with 

 black, bordering the shafts of the feathers, and near the tips assuming a hastate 

 or sagittate form. 



Plumage of the back with every feather having about three to five spots of the 

 same description, the arrow-headed shape and black border distinct and well 

 defined, some of the spots nearly white ; every feather also witii very fine trans- 

 verse lines, and minutely dotted or freckled with black. 



