SERPULA. CREEPER. 157 - 
ments, and an opake white border round the shell: length 
half a line. 0 
In line sand. v. ra. 
22. Serpula striata.' Flash Creeper. 
Walker, f. (>. 
Shell glossy white, transparent, somewhat oval, with a 
long slender neck, and marked with opake longitudinal 
lines : aperture small, orbicular. In shape it resembles an 
oil-flask : length not half a line. 
In fine sand. v.m. 
23. Serpula globosa. Bottle Creeper . 
Walker, f. 8. 
Shell white, transparent, smooth, globular, with a very 
short hardly produced neck, terminating in a small round 
aperture; it differs from the last in being destitute of lines 
and in the mouth not being lengthened : its size is rather 
less. 
At Sandwich : very rare. 
24. Serpula lcevis. Decanter Creeper. 
Walker, fi 9. 
Shell blueish-white, very transparent like glass, with a 
long cylindrical neck : size of the last, from which it dif¬ 
fers, in its glassy lustre, more oblong shape, and length¬ 
ened mouth. 
In fine sand. v. m. 
25. Serpula marginata. Jar Creeper. 
Walker, f. 1. 
Shellglossy white,of aflattish globular form, surrounded 
tyasingle raised longitudinal rib ; mouth hardly produced : 
size of S. globosa, from which it differs, in its more flat¬ 
tened shape, and the raised longitudinal ridge by which it 
is surrounded. 
In fine sand. v. m, 
26. Serpula pcrlucida. Water-bottle Creeper. Fig, 23. 
Montagu , pi. 14. f. 3, 
Shell glossy-whit;^ transparent, somewhat globular, ta- 
p pering 
