50 SYRIAN MOLLUSCAE FOSSILS. 



Cardium (Protocardia) Hillanum Sowbsbt. 



Cardinal Hillanum Sowerby, 1S13, Miu. Couch. Gr. Brit., I, p. 41, PI. xiv, fig. 1. 



Hum biseriatum Cojjbad, 1SJ2, Official Report, p. 210, PI. vi, figs. 3S-10. 

 Cardium bellum Conrad, 1S53, Official Report, p. 225, App., PL i, fig. 3. 



Fifteen specimens, all casts. Though entirely devoid of test, they are 

 easily identified by their form alone. Impressions from some of the shell 

 markings are often retained by the casts. Merrill, Thomson, and Congre- 

 gational House collections. 



Locality and Position. — Beirut district ; probably from the Turonian Car- 

 dium bed. 



Cardium (Protocardia) Judaicum, sp. nov. 



Plate IV, figa. 5 a, 1>, c, d. 



Testa subquadrata, subosquilateraUs, paulo hngvor quam alitor, moderate inflaia ; 

 margo anticus rotundatus, posticus oblique truncatus, superne recUusculus : umbones 

 tumidi, obtuse angulati, posUce coneavi ; apices fere in media testa siti, prominuli, sub- 

 or/i/i, incurvi, arte approzimati : superficies lateralis varicibus concentricis, regu- 

 laribus, plano-convexis, leinbus, quam spatia interposita laiioribus, circiter tricenis 

 obtecta ; superficies posfica costis radiant ibus angnstis, spinulis et lamellis tenuissimis 

 ornatis, duodenis munita : margo posticus usque ad angulum postero-veniralem 

 deniatus. Signa interna ignota. 



Shell subquadrate, subequilateral, a little longer than high, moderately 

 inflated; anterior margin rounded; posterior margin obliquely truncated, 

 above nearly straight: umbones swollen, obtusely angled, more or less con- 

 cave behind ; beaks nearly mesial, somewhat prominent, rather sharp, in- 

 curved, closely approximate : lateral surface furnished with about thirty 

 regular concentric varices which upon their faces are flatly convex, smooth, 

 and wider than the furrows between them ; posterior surface marked by 

 twelve narrow radiating ribs, which are studded with spinules set at equal 

 distances, mid are crossed by extremely delicate lamella* : posterior margin 

 toothed as far down as the postero-ventral angle. Characters of interior 

 unknown. 



Dimensions of the entire specimens: — 



Larger: length, -I 1 , mm.; height, 22 mm. ; thickness, 18 turn. 

 Smaller: " 2.3 mm.; " 21 ram. ; " 15 mm. 



