oi SYRIAN MOLLUSCAN FOSSILS. 



Hippurites plicatUS Conrad. 



Plate III, fig. 8. 



Hippurites plica t us Conrad, 1^52, Official Report, p. 234, App., PL vii, fig. 49. 



Two specimens, apparently of this species. The one figured is a free 

 lower valve : height, 68 mm. ; greatest width, 45 mm. The other is a 

 cluster of aggregated individuals, upon one of the imperfect shells of which 

 a single upper valve is present. This is in place, and, so far as it is distin- 

 guishable in the mass, has the general form and about one fourth the height 

 of the figured lower valve, with its apex central and directed upwards. 

 Coll. Merrill. 



Locality and Position. — Beirut district; probably from the same horizon 

 as the species next following. 



Hippurites Lewisii Fraas. 



Hippurites Lewisii Fraas, 1878, Aus dem Orient, II. Theil, p. 74, PL v, figs. 5 a, b. 



A single lower valve, entire and answering fairly to Fraas's description 

 and figures. Height, 05 mm. ; greatest width, 60 mm. Whether this and 

 plicatus are distinct species may perhaps be doubted. Coll. Thomson. 



Locality ami Position. — Probably the Beirut district; assigned by Fraas to 

 the Cardium bed of the Turonian (see pp. 6, 7). 



Trigonia Syriaca Conrad. 



Trigonia Syriaca Coxiiad, 1S52, Official Report, pp. 214 and 232, PL ill, figs. 19, 20, 21, 23, and App., 



PL iv, fig. 26. 

 Trigonia Syriaca Fraas, 1 s 7s, Aus dem Orient, II. Theil, p. 43, V\. iii, figs. 2-5. 



Seven specimens. Three with both valves nearly entire; one single right 

 valve; three casts. Fraas's figures of the exterior of this species are far 

 better than ( Vmrad's. 



The best shells and easts — two of each — are from a private collection of 

 Professor Louis Agassi/., and are labelled only " Lebanon." The others are 

 from the Merrill collection. 



Locality and Position. — Probably from the Beirut district. Fraas styles 

 this the "leading fossil" of the Cenonianian Sandstone. 



