﻿354 BULLETIN 103, UNITED STATES NATIONAL MUSEUM. 



Columella papillate. 



Coenenchyma dense; with or without costal prolongations from 

 the calicular peripheries ; fine granulations scattered over its surface. 



Localities and geologic occurrence. — Costa Rica, Limon, as follows 

 Station 2692, collected by R. T. Hill; Moin Hill, Niveau d and No. 

 461, collected by H. Pittier; station 5884&, Moin Hill, collected by 

 D. F. MacDonald. The geologic horizon seems to be Pliocene. 



Florida, station 3300 in the Pliocene Caloosahatchee marl of Shell 

 Creek, collected by Frank Burns. 



Cotypes.— 'No. 324809, U.S.N.M., from Niveau d, Moin Hill, Port 

 Limon (3 specimens). 



Family EUSMILHDAE Verrill. 



Genus ASTEROSMILIA Duncan. 



1867. AsterosmUia Duncan, Roy. Soc. Philos. Trans., vol. 157, p. 653. 

 1873. AsterosmUia Duncan, Geol. Soc. London Quart. Jouru., vol. 29, p. 553. 

 1884. AsterosmUia Duncan, Linn. Soc. London Journ. Zool., vol. 28, p. 61., 



Type-species. — Trochocyathus ahnormalis Duncan. 



When Dmican described this genus he referred to it his Trocho- 

 cyathus ahnormalis, changing the name to anomala, and refigured 

 the species. He also described two additional species as Astero- 

 smUia exarata and A. cornuta, a synonym of A. ahnormalis, and 

 failed to designate a type-species for the genus. Trochocyathus 

 ahnormalis was described with much care, wliile the descriptions of 

 the two other species are short and unsatisfactory. A. cornuta is a 

 synonym of A. ahnormalis. It therefore seems best to take tlio 

 species I have selected, as indicated above, as the type-species of 

 the genus. 



Duncan described three species of AsterosmUia from the Tertiary 

 formations of Santo Domingo, namely, Trochocyathus ahnormalis,'^ 

 for which the genus AsterosmUia was subsequently erected, A. cor- 

 nuta, and A. exarata,'^ and one species A. pourtalesi from the upper 

 Eocene St. Bartholomew limestone. I consider A. cornuta a syno- 

 nym of A. ahnormalis, and transfer Duncan's Trochocyathus profundus 

 from the genus in which it was originally placed to AsterosmUia, 

 leaving four described fossil species in the genus. Pourtales described 

 from the West Indies one recent species that belongs to AsterosmUia, 

 his A. prolifera, originally named Ceratocyathus prolifer, and of which 

 Lindstrom's Paracyathus arcuatus is a s3aionym. I here describe an 

 additional new species, namely, A. hilli, from Bowden, Jamaica, and 

 Limon, Costa Rica, and have described two additional species from 

 Santo Domingo, in a paper not yet published, making eight, the total 

 number of American species at present known to belong to the genus. 



» Collected by A. Olsson on Provision Island, Costa Eica, in the Gatun formation. Footnote added 

 to pasc proof. 



