6 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 66 



The fauna listed above at stations 9027, 9196, and 8300 is repre- 

 sented by onl}^ a few species and its relationship to the larger 

 fauna at the other stations is uncertain. That at 9027 and 9196 

 indicates a little higher stratigraphic position. About one-half the 

 species at station 9219 are represented in the collection from the 

 flood-wash near Brasso — stations 8302, 9212, and 9215— and its 

 fauna indicates the same stratigraphic horizon to some part if not 

 the whole of these beds. The material from the flood-wash may 

 represent the assemblage of species from more than one stratum or 

 perhaps horizon. Some of the species from station 9219 and from 

 the flood- wash at Brasso indicate a horizon a little lower strati- 

 graphically than that of the Bowden marl of Jamaica or that of 

 the Gurabo formation of the Dominican Kepublic, but others are 

 closely related to species in those formations. Consequently this 

 fauna may have lived either during the latter part of the lower 

 ISIiocene or the early part of the middle Miocene. 



The following species apparently show a close relationship to the 

 Bowden and Gurabo formations — now referred to the middle 

 Miocene : 

 Conns muJtiliratus, subspecies icalli, uew subspecies. Conns multiliratns is 



more characteristic of the middle Miocene. 

 Drillia propefusifonnis, new species. 

 Glyphostoma aniicta rintriaila, new subspecies. Glyphostoma amicta is a 



Bowden species. 

 Phos trinitatenses, new species. In Costa Rica a very similar form is found 

 in a fauna carrying Sconsia laevigata. 

 Species related to species now referred to the lower Miocene are : 

 Turris hvassoensis, new si>ecies — very close to a si)ecies in the Shoal River 



marl member of the Alum Bluff formation, Florida. 

 Drillia censors bullhrooki, new subspecies. Apparently the same form oc- 

 curs in the Baitoa formation, D. R. 

 Mlcrodrillia triua, new species. Related to a Chipola species. 

 Marginella trinitatensis, new species. Resembles M. cercadensis Maury, Cer- 



cado formation. 

 Vexillum bristoli (Maury). Related to a Chipola si)ecies. 



Alectrion brassoen'sis, new species. Aff. A. cercadensis ^laury, Cercado for- 

 mation, D. R. 

 Strombina icalli, uew species. Resembles pseudohaitensis Maury from Cer- 

 cado formation. 

 Modulus tamanensis Maury. Aff. M. icilcoxii Dall from the ChiiX)la marl 

 member of the Alum Bluff formation. Also occurs at Machapoorie 

 Quarry. 

 Thautnastoplax prima Rathbun. Type from Culebra formation, Panama. 



FAUNA FBOM MANZANII.LA COAST 



Station and faiinal list 



9197. St. Andrew County, Manzanilla Ward, Manzanilla Coast. J. A. Bull- 

 brook, collector. (The matrix adhering to the specimens is indicated 

 as follows: (a) ferruginous matrix; {b) gray sandy matrix; (c) 

 indurated gray matrix.) 



