22 SYRIAN MOLLUSCAN FOSSILS. 



Tylostorna induratum Conrad sp. 



Plate I, tigs. 8 a, b. 

 Chenopus induratus Conbad, 1S52, Official Report, p. 220. PI. xi, tig. G9. 



Two internal casts. Dimensions of largest : length, shortened at each 

 extremity, 53 mm.; original length, approximate. GO mm. ; width, a little 

 compressed, 37 mm. 



In size, proportions, shape of aperture, and columellas lip, these casts 

 correspond to Conrad's figure and description ; but their characters indicate 

 that they belong to a species of Tylostorna closely related to (possibly iden- 

 tical with) T. Torrubice Sharpe (Quart. Jour. Geol. Sci., London. V. p. 378, 

 PI. ix, figs. 1, 2). Of such casts the specific descriptions must be necessarily 

 imperfect. Lartet observes (Expl. Geol. de la Mer Morte, p. 120), '• Le 

 moule que M. Conrad figure sous ce nora [Chenopus induratus] pourrait bien 

 se rapporter a un autre genre." Coll. Merrill. 



Locality ami Position. — Beirut district : from a yellow marl, apparently 

 identical with that of Abeih. 



Turritella elseonis, sp. nov. 



Plate II, flss. 1 a, b. 



Testa parva, tenuissima, pyramidali-iurrita : anfractus oetoui sen noveni, ad 

 suturam valde constricti, Uneis incrementi insinuatis striati, medio unicarinaii, a 

 carina utrinque a,! suturam plano-declives : carina arujusta, in anfrartibus summis 

 elevata, acutiuscula : basis truncata, ml peripAeriam cannula et antic angulata, in/erne 

 applanata: superficies anfractuum infra carinam fib uno l< mi. supra duobus tenuis- 

 simis parallels eincta: apertura transversim et anguste ovata. 



Shell small, exceedingly thin, pyramidally turreted : whorls eight or nine, 

 strongly contracted at the suture, striated with sinuous lines of growth, in 

 the middle one-keeled, from the keel sloping in both directions to the 

 suture: keel narrow, on the upper whorls elevated and rather sharp: base 

 truncate, flattened below, keeled and acutely angled at the periphery: sur- 

 face of the whorls below the median keel encircled with a single delicate 

 thread, and above the keel with two still mure slender and parallel ones: 

 aperture transversely and narrowly ovate. 



Two specimens. One retains the test and six entire whorls, with part of 



