i4 Bulletin 29 178 



Acteocina recta d'Orbigny 

 Plate 3," Figure 3 



Bulla recta d'Orbigny, De la Sagra, Hist. Pol. y Nat. Isla de Cuba, vol. 

 5, p. 67, no. 55, 1845; Atlas 8, pi. 4 bis, figs. 17-20, 1855. 



Tomatina recta Gabb, Trans. Amer. Phil. Soc, vol. 15, p. 246, 1873. 



Tornatina coix-lacryma Guppy (in part), Quart. Jour. Geol. Soc. Lon- 

 don, vol. 22, p. 518, 1876. Not T. coix-lacryma Guppy, Geol. 

 Mag., vol. 4, p. 500, fig. 3, 1867. 



Tornatina recta Dall, Trans. Wagner Inst. Sci., vol. 3, pt. 1, p. 15, 

 1890, Id. pt. 6, p. 1583, 1903. 



Cf. Tornatina coixdacryma Cossmann (in part), Journ. de Conchyli- 

 ologie, vol. 61, p. 4, pi. 1, figs. 12, 13, 1913. 



Shell minute, oblong, cylindrical, chiefly smooth, a few spe- 

 cimens very finely, obsoletely, microscopically, spirally sub-stri- 

 ate; spire very short, the first whorl projecting as a knob; su- 

 ture canaliculate, aperture linear, widening suddenly; columella 

 smooth. Length of shell 2.5, greatest width 1.25 mm. 



This species differs markedly from A. coix-lacryma Guppy 

 in the form of the spire. In A. coix-lacryma the spire is sunken 

 and only the knob -like point is visible above the plane of the 

 last whorl; while in A. recta the spire though short is not sunken 

 and the coils of the volutions can be seen below the apical knob. 



We have a number of Gabb's specimens (C. U. Museum 

 No. 7637) for comparison. 



M. Cossmann has referred a specimen from Martinique to A. 

 coix-lacryma, in the synonymy of which he places A. recta. The 

 Martinique shell is nearly three times as large as Gabb's, d'Or- 

 bigny's, or ours. 



Gabb and Guppy identified A. recta from Santo Domingo, 

 and Dall from the Bowden beds, Jamaica. 



Locality. — (Exp'd '16) Bluff 3, Cercado de Mao. 



Acteocina (Cylic/inella) triticum-tritonis , n. sp. 

 Plate 3, Figure 4 



Cylichnella bidentata Gabb (in part), Trans. Amer. Phil. Soc., vol. 15, 

 p. 273, 1873. 



