612 WORMS. TESTACEA. 88. Sabella. 
Sabulofa, Shell cylindrical, clofed at the tip, fubclavate, perforated, 
compofed of larger grains of fand. ^ —— . 
Schret. flufeonch. tab. VY. min. D. fig. 4. 
Inhabits Z 2urizgia and Belgium; not an inch long, 
Shell traight, or a little inflefted in the middle, cinereous or 
' black, or cinereous above and black beneath. n 
Vegetabilis. Shell depreffed, compofed of fragments of twigs flems and 
bark, and broken pieces of the Tellinacornea. ^ 
Schrat. fiufeonch. tab. 11. min. C. jig. 9g. — : M 
Inhabits waters of 7 Zuringia ; an inch long. 
Ammoniata Shell polygono-cylindrical, within fmooth, compofed of 
fragments of the Cornu ammonis. : 
Inhábits rivers, Schrat. flufconch, tab. 11. C. fig. 10. 
Helicina. Shell round, within fmooth, compofed of fragments of the 
Helix pufilla. alpes ae inae ieri Bera 
Schrat. fufconch. tab. 11.C, min. fig. V1. 
Inhabits itagnant waters of Thuringia ; an inch long. 
Dimidiata, One part of the (hell compofed of fand or gravel, the other 
thicker, clavate and compofed of fragments of fhells. 
Schrat. fufeonch. tab. 11. fige3-D. 
Inhabits waters of ZZurizgia. —' 
Fixa. Shell compofed of fmall ftones, tapering towards the tip. 
; 7 Schrat. flufconch. tab. 11. min. C. figs 12. d 
Inhabits Thurinyia, affixed to tones in the water: an inch long, 
gregarious, open at the fide by which it is fixed. 
Clavatz. Shell compofed of {mall flones, the open end clavate and 
bes confifting of largerflones. — — ' 
Schroet. flufconcb. tab. Y1. min. D, fig. 2. 
Inhabits Thuringia ; folitary. 
Corticalis. Shell compofed of pieces of bark, towards the end of broken 
m ftems. EA AER n. 
Schroet. flufconcb. tab. 11. min. D. fig. 5. 
Inhabits rivers of Z/uringia, in numerous varieties. 
Arundina- Shell fubconic, open at both ends, compofed of fragments 
cea. of the bark of reeds placed on each other. s 
Schroet. flufconch. tab. 11, min. D. fig. 6. 
Inhabits 2 Puringia : about an inch long, ' 
Aculeata, Shell roundifh, compofed of fmall twigs and the culms of 
graffes the points of which project a little, . 
Schroer. 
