183 Dominican Fossils — Maury 19 



Bulla paupercula Guppy, Geol. Mag. London, p. 437, 1874; Quart. 



Jour. Geol. Soc, vol. 32, p. 518, 1876. 

 Bulla paupercula Dall, Trans. Wagner Inst. Sci., vol. 3, pt. i,p. 18, 



1890. 

 Bulla striata Dall, Trans. Wagner Inst., vol. 3, pt. 6, p. 1583, 1903. 



Shell ovate-oblong, smooth except for a few spiral impressed 

 lines near the base; inner lip with a band of callus extending 

 the entire length, but thickest anteriorly. Length of a good-sized 

 shell 21, greatest width 12 mm. 



As Guppy and Gabb have noted, this species is very close 

 to the recent Bulla amygdala Dillwyn, and Dr. Dall thinks it 

 identical with Bulla striata Bruguiere, the Mediterranean ana- 

 logue of B. amygdala. Our party collected quantities of B. 

 amygdala from the Monte Cristi beach and the shells resemble 

 greatly our fossils from the blue clays, but the recent tend to be 

 nearly twice as large. As long as Sowerby's species has been so 

 much used it seems best to retain it for the fossil; but evidently 

 the species has simply lived on apparently uninterruptedly and 

 become the recent somewhat larger shell known as B. amygdala. 



Bulla pazipercula is very common in Santo Domingo, where 

 it was collected by Heneken and Gabb, and Dall lists it as Bulla 

 striata from the Bowden beds, Jamaica. 



Localities. — Bluff 3, Cercado de Mao; Zone G, Rio Gurabo; 

 Zones H and I, Rio Cana; sandy clays and gravels, Rio Cana. 

 (Very abundant on the upper Cana. ) 



Bullaria Sarahberlinercz n. sp. 

 Plate 3, Figure 9 



. Shell large, ovate-cylindrical, spire deeply involute, sunken, 

 outer lip slightly raised above the spire, rounded anteriorly; in- 

 ner lip reflexed and thickened anteriorly and with a thinner, 

 posterior callus; the surface of the shell in well-preserved speci 

 mens is very beautifully marked with a series of very delicate 

 lighter and darker alternating bands, parallel to one another and 



