28 SYRIAN MOLLUSC AX FOSSILS. 



Alaria monodactyla, sp. nov. 



Plate II, figs. 6 a, b, c. 



\_Alaria MoEEis & Lyceit, 1S50, as restricted by Gabb, 1S69, Am. Jour. Couck., V, p. 21, aud adopted by 

 Zittel, 1882, Haudbucli dcr PalKontologie, I. Band, 2. Abtbeilung, p. 252.] 



Testa {urrila, fusif'ormis, alata, cutulula : aiifracins scplcnl vel octoiii, sidura 

 pj^ofunda sejimcti, costis seu varicibus Totundatis exstaniibus pleriimcjue coniinuis 

 armati, fills tenidbus transversis unduiue oniati ; idtimiis unicarinutus, pcnnliinn cosice 

 seu varices septem cequales, idtimi incompositm et partim obsoleto} : aperturu trhjima ; 

 Cauda recta plana ; uta in digitmn rcction breveni evadeiis ; lattrtmi teniie, angustum. 



Shell tiuTeted, fusiform, winged and produced into an anterior canal : 

 whorls seven or eight, separated by a very deep suture ; armed with rounded 

 projecting longitudinal ribs or varices, generally continuous from whorl to 

 whorl ; everywhere ornamented with thin transverse threads which cross the 

 ribs ; the last whorl bearing a single keel, the next to the last having seven 

 equal ribs or varices, which on the last become unequal, irregular, and in 

 part obsolete : aperture triangular ; canal straight, flat ; wing terminating 

 in one short and straight digitation. Inner lip thin and narrow. 



Four specimens. Of the best preserved, length, 17 mm., when complete, 

 about 19 mm.; width of body-whorl, without digitation, 8mm. Of largest, 

 length, 20 mm., originally, about 25 mm. ; width of body-whorl, without 

 digitation, 9 mm. 



On the last whorl at the distance of half a revolution from the outer lip 

 is a well-marked, Ranella-like varix, which with those of the preceding volu- 

 tions forms a longitudinal row continuous to the apex ; and u^Don all the 

 whorls, except the last, the ribs or varices are generally arranged in straight 

 unbroken lines, but sometimes irregularly. Two obscure transverse ridges 

 cross the shell where it begins to narrow into the canal. Coll. Bird. 



Locality and Position. — Abeih ; from the Turonian arenaceous marl. 



Rostellaria Rustemi Fr.\as. 



Roslellaria Rustemi Fraas, 1878, Aus deni Orient, II. Tlieil, p. C7, PI. vi, fig. 4. 



Single specimen adherent to a lump made up of broken and comminuted 

 shells, and side by side with Neriwa pauxiUa nobis (see p. 25). Length, when 

 entire, about 28 mm. ; width, wing wanting, 13 mm. 



