| (CABuOlL ocilLl 
Lisiiintii-iiii 
TESTACEA UNIVALVIA. 
^SS®8S®»»S«»8»#»SS««8»SSSS«»S»2®5S«9SS®S8*e«SSa8SSe®SSe®SS®8SS«SSS83S«e9SZr9i 
Germ. (Sutfc^altge ^Dtt^t)ltett , ofrer @d)ttecfeft* Belg. Eenfchalige Hoorens. GalL Coquiles uni- 
valves. Angi. Univalve Shells. Ban. 
C onchylia ex unica tefta formata, nonnunquam operculata, uni- 
valvium feu cochlearum ordinem conftituunt; harum ali®, 
quibus Ipira regulariseft, apertura, ali®, Ipiranulla aut irregulari 
donat®, forma diftinquuntur, & in fequentia genera dividuntur: 
I. ARGONAUTA. 
Tefta unilocularis , cymbiformis, membranacea , Ipira in¬ 
voluta. 
II. NAUTILUS. 
/ / ♦ 9 
Tefta polythalamia, diflepimentis fiphone communicante per¬ 
foratis. 
III. CONUS. 
Tefta convoluta, turbinata, apertura longitudinali edentula, 
columella l®vi. . 
L 1 2 IV. CY- 
