WORMS. TESTACEA- 86. Serpula. 607 
Adan. feneg- 1. p. 166, tab. Y1. fig. 6- 
Inhabits Africa: 8—9 incheslong. 
Shell whitifh, fingularly twifted, fubumbilicate, within glabrous. 
Infundibu- Shell round, white, tranfverfely ftriate and thrice twifted, 
lum. the firft bend appearing as if compofed of 5 funnels 
placed in each other. 
Martini Befch. Berl. Naturf. 2. tab. 12. ig. Y. 
Inhabits the Indian Ocean, fixed to fones.. 
Pyramida- Shell cinereous, above convex, beneath flat, pyramidal and 
hs. many times twifted, the bends decreafing inwardly. 
Spengler Befcb. Naturf. 2. tab. 9. A. fig. 3—5. 
Spengler Catal. raif. tab. 5. fg. 12—17. 
Inhabits the Indian fea, adhering to teftaceous fubftances, about 
an inch long ; open at the narrower end, fometimes ftraightifh _ 
or a little bent, 
Denticulata Shell white, round, fubulate, ftraight, toothed at the fides, 
with a longitudinal glabrous rib in the middle; the tip 
a little incurved, glabrous. 
Schret, Einl. in conch. 2. tab, 6. f. 18. 
Found in the Lepas tintinnabalum:- 2 of an inch long. 
Melitenfis.. Shell roundifh, twifted, umbilicate, with decuffate ftriz | 
and longitudinal nodulous ribs, within fmooth with 
numerous divifions. E 
Sebroet, Einl. in conch. 2. tab. 6. f. 19. 
Found foffile in Malta. The 2 firft bends placed on each other. 
Norwegica. Shell round, fmooth, incurved, with a nearly obfolete un- 
dulate bafe: mouth obliquely truncate. 
Inhabits Norway. AG, Nidr. 4, tab. 2. f. 31—13. 
Porre@a. Shell round, fmooth, polifhed, afcending in a flexuous 
manner from the fpiral bafe. 
Inhabits North feas. Mull. Zool. Dan. prodr, 2850. 
Shell refembling S. fpirillus, but is whiter, pellucid and not 
rugged: inhabitant fhort, with a red back and paler fides. 
Vitrea. Shell round, regular, fpiral, orbicular, pellucid, fhining, 
wrinkled, with a thickened aperture. 
O. Fabr. fn. Groenl. p, 382. n. 378. 
Inhabits Greenland íeas, on Sertularim, Fucí, ftones and other 
marine fubftances; refembles S. glomerata : shell thick, umbi- 
. dicate, not a line in diameter, fometimes reddiíh, 
Cazcellata. 
> 
