Miscellaneous. 229 



Total length about 14 inches, wing 10|, tail 6. 



Younger or different sex ? Pale bands on the superior surface of 

 the body broader, those on the wing-coverts, primaries and secon- 

 daries enclosing tolerably regular bands of black. Scapulars with 

 their outer webs fulvous and pure white. 



Spots on the outer webs of the primaries and bands on the tail 

 nearly white ; secondaries broadly tipped with white, each terminal 

 spot enclosing a segment of dark brown. 



Entire inferior surface of the body fulvous, feathers having lon- 

 gitudinal stripes only of dark brown ; under tail- coverts nearly pure 

 white. 



Younger ? Bands on the back and rump almost obsolete, having 

 the appearance of spots only. Scapulars and some of the wing- 

 coverts broadly edged with pure white. 



Entire under surface of the body nearly white, with but a tinge 

 of fulvous, the feathers having longitudinal bands only of deep brown. 

 Under tail-coverts and tarsi nearly white. 



Total length about 14 inches, wing 9^, tail 6. 



Hab. South America. 



This is a bird of which I have frequently seen specimens, and am 

 surprised that I have not succeeded in finding a description of it. I 

 am acquainted with no species intimately resembling it. — Proceedings 

 of the Academy of Natural Sciences of Philadelphia, vol. iv. p. 121. 



Descriptions of new Marine Shells. By T. A. Conrad. 



The following new and interesting shells are from the coasts of 

 Lower California and Peru : — 



SoLECARDIA, Con. 



Shell bivalve, equivalve ; hinge with two diverging cardinal teeth, 

 and a linear oblique cartilage-pit between ; cardinal plate profoundly 

 grooved on each side of the teeth ; muscular impressions 2, small, 

 rounded, remote from the margins, particularly from the base ; pallial 

 impression entire. 



S. eburnea. Oblong-oval, equilateral, ventricose, thin ; extremities 

 nearly equally rounded ; basal margin arched ; valves white, shining, 

 minutely shagreened, towards the base minutely rugose, with fine 

 impressed radiating lines ; concentric lines towards the base finely 

 waved, indenting the margin. 1 2-10 : 8-10. 



In this singular bivalve the pallial impression shows no junction 

 with the adductor impressions, but joins the extremities of the car- 

 dinal plate. The muscular impressions are as distinct on the ex- 

 terior as on the interior. 



Petricola. 



P. sinuosa. Subtriangular ; inflated anteriorly ; profoundly sinu- 

 ous posteriorly ; ribs radiating, prominent, acute, except towards the 

 anterior margin, where they are replaced by closely-arranged lines ; 

 basal margin profoundly sinuous ; within brown, cavity of umbo 

 white ; cardinal teeth prominent, two in one valve, and one broad 

 one in the other. 8-10 : 6-10. 



