50 SYRIAN MOLLUSCAN FOSSILS. 



Cardium (Protocardia) Hillanum Sowerby. 



Cardium Hillanum Sowekby, 1S13, Miu. Conch. Gi-. Brit., I, p. 41, PI. xiv, fig. I. 

 Cardium hiscrmtum Coxkad, 1852, Official Report, p. 216, PI. vi, figs. 3S-iO. 

 Cardium bellum Conkad, 1852, Olficial Report, p. 225, .\pp., PI. 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. 



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

 dium bed. 



Cardium (Protocardia) Judaicum, sp. nov. 



Plate IV, tigs. 5 a, b. c, d. 



Testa subquadrata, suba'quiiateralis, paulo lomjior quani altior, moderate infala ; 

 margo anticus rotimdatus, posticus oblique tnuicatus, supernc rectiusculus : tmibones 

 twnidi, otduse anguluti, justice concavi ; apices fere in media testa siii, promimdi, stib- 

 acutt, incurri, arte approximati : superficies lateralis varicibus concentrieis, regii- 

 laribus, jylano-coufexis, Icvibus, quam spatia interposita latioribtis, circiter tricenis 

 obtccta ; superficies postica costis radiantibus angustis, spiuu/is et lunicJlis tenuissimis 

 ornatis, duodenis miinita : margo posticus nsqitc ad angulum jwstcro-veniralem 

 denlatns. Signa inhrna ignoia. 



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 wdiich upon their faces are flatl\' convex, smooth, 

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

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

 distances, and are crossed by extremely delicate lamellaj : posterior margin 

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

 unknown. 



Dimensions of the entire specimens : — 



Larger: length, 21^ mm.; height, 22 mm. ; thickness, 18 mm. 

 Smaller : " 23 mm. : " 21 mm. ; '• 15 mm. 



