PHYLLOBRANCHIA. TURBONID. 145 
FAMILY IV. TURBONID. 
Turbo, Trochus, et Helix, Auctorum. 
Testa plus aut minus elevato-spiralis. Apertura rotundata, 
aut ovata, et ad dextram posticé acuminata (in heterostrophis 
ad sinistram). Padliuvm simplex. 
Shell with its spire more or less elevated; its aperture 
rounded or oval, and acuminated on the right side behind (in 
heterostrophes or reversed shells on its left side). Mantle 
simple. 
The type on which this family is founded is Turbo, this 
name applying to all the genera which it comprehends. 
It is necessary for me to observe, respecting the genera which 
I have established in this family, that I have merely followed 
the examples of the Chevalier de Lamarck, Jules-César Sa- 
vigny, H. M. Ducrotay de Blainville, Rafinesque, Say, Denys 
de Montfort and other foreign naturalists, exactly in the same 
plan, with some very slight variation in the nomenclature of 
the parts of the shell; and as I have had opportunities of ob- 
serving much respecting their animals and their ceconomy, I 
am induced perhaps to divide them too minutely. 
Synopsis Stirpium et Generum. 
Stirps 1. Testa alta vel altissima, turrita. 
BHPMGPANCUStA,...5........--.+.- 67. SABANMA. 
Testa conica. Spira mediocris. Oper- 
eprume tenes... ooh I} 68) Assi INTA. 
Testa glabra, forté costata transversim 
costis posticé reflexis. | Peritrema 
erassismmIny: «25 007. YD bg Sekar, 
satura profunda ....7-2.>. 70. TURRITELLA. 
Sutura profunda. Peritremaperfectum. 71. TuURBONELLA. 
H 
