22 SYRIAN MOLLUSCAN FOSSILS. 



Tylostoma induratum Conrad sp. 



Plate I, ttsjs. 8 a, b. 



Chenopus iiiduratiis Conrad, 1852, Official Report, p. 220, PI. xi, fig. 69. 



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

 extremity, 53 mm. ; original length, approximate, 60 mm. ; width, a little 

 compressed, .37 mm. 



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

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

 that they belong to a species of Ti/Iostoma closely related to (possibly iden- 

 tical with) T. Tomthiw Sharpe (Quart. Join-. Geol. Sci.. London, V, p. 378, 

 PL 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 nom \_Chenojms indundiis] pourrait bien 

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



Loculltji ami Position. — Beirut district ; from a yellow marl, apparently 

 identical with that of Abeih. 



Turritella elseonis, sp. nov. 



Plate II, flgs. 1 a, b. 



Testa parva, temdssima, pyramidali-turrila : anfradiis odoni sen novcni, ad 

 sutiiram valde constridi, lineis iucrcnientl umnuatis striaii, medio imicurinati, a 

 carina utrinquc ud sutiirani pluno-dedives : carina anyusta, in anfradibus summis 

 elevata, acutiuscida : basis trioicata, ad peripheriam carinata et acute ancjidata, inferne 

 applanaia: superficies anfractmim, infra carinam fib itno tenui, supra diiobus tenuis- 

 simis parallelis cinda : aperinra transvcrsim et anguste ovuta. 



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, fiattened below, keeled and acutely angled at the 25eriphery : sur- 

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

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

 aperture transversely and narrowly ovate. 



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



