ACT.-EOXIXA YAFEA. 29 



In neither this nor Fraas's specimen is the wing preserved. Coll. Merrill. 

 Locality and PosHion. — Mountains of Gilead. Found also at Abeih and 

 referred bj Fraas to his Turonian Gasteropod zone. 



Pterocera (Harpagodes) sp. ? 



Flat* II, flg. 7. 



A single internal cast, on the back distorted by pressure, and on the right 

 side somewhat broken away. Under surface normal. Length, 109 mm. ; 

 width. To mm. ; height, 65 mm. Of a specimen of P. Icaunensis, which re- 

 tains the test nearly entire, except the digitatioiis and part of the spire, 

 the dimensions, as given, are, length, 118 mm. ; width, 93 mm. 



Of the larger fossil Pterocera; which have been figured and described, this 

 cast has little resemblance to any but the Cretaceous P. pelatji Brongn., and 

 the Jurassic P. Icaunemis Cotteau. Careful comparison with the excellent 

 original figures of the former (Ann. des Mines, (1,) VI, p. 554, PI. vii, fig. 

 1 a, b, c), and with well-preserved specimens of the same, in the Campiche 

 collection of the Museum of Comparative Zoology, from Sainte-Croix, Switzer- 

 land, as well as with the numerous figures of P. Icaunensis, supplied by the 

 continuation of tlio Paleontologie Fran^aise (Terr. Jurass., Ill, PI. xlvi- 

 xlviii, Ixxvii, Ixxx-lxxxiii), inclines us to believe that the cast belongs to 

 neither species. But the exceptional difficidty which the genus Pterocera 

 presents for the determination of fossil species, arising from the rarity of 

 complete examples and their very considerable variations, renders it unsafe 

 to found a new species upon the interesting but distorted cast before us. 

 The aperture seems to have been proportionally narrower than in other 

 large species of -the genus. Coll. Congregational House, Boston. 



Locality and Position. — Probably the Beirut district ; from a yellow marl 

 similar to the beds at Abeih. 



Actaeonina vafra, sp. nov. 



Plate III, figs. 1 a, b. 



Testa ovato-cyUndracea, ol)Scure rimato-perforata : sjnra j}rodiietiuscida, apice 

 acuto : anfractus circUer sex, plano-comexi, idtiniiis peramplus sjjirce longitudinem 

 triple siqjerans ; siitura impressa : superjicies striis incrementi nonminqnam fortio- 

 ribiis iwtata : apeHura elonyata, postice acuminata, antice latior ac rotimduta ; labium 



