SERPULA. CHEAPER. 1 57 



ments, and an opake white border round the shell :' length 

 half a line. 



In fine sand. v, tn. 



22. Serpula striata. Flask Creeper. 

 Walker, f. 6. 



Shil glossy white, transparent, somewhat oval, with u 

 long slender neck, and marked with opake longitudinal 

 lines : aperture small, orbicvdar. In shape it resembles an 

 oil-flask : length not half a line. 



In fine sand. v. tn. 



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 Itevis. Decanter Creeper. 

 Walker, f. 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. 7, 



Shell glossy white, of aflattish globular form, surrounded 

 by a single 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. 



Jn fine sand. v. m. 



26. Serpula perlucida. Water-bottle Creeper. Fig. 23. 



Montagu, pi. 14. f. 3. 



Shell glossy-white, transparent, somewhat globular, ta- 

 p pering 



