ANCILLARIA EFFUSA. Fig. 8 and 9. 



A. testa oblongd, semicylindricd, fulvd; spirrf subacuminatd, albicante; anfractu ultimo cingulis duobus et sulco supra varicem 

 profundo instructo ; varice albicante, concinne striato, aperturd fulvd, superne acuminata, infra effusd ; labio externo 

 prope basin unidcntato ; long. 1^, lat. i-J, poll. 



Ancillaria effusa, Swainson in Journal of Science, Lit. and Arts, XVIII, p. 275. 



Icon. Chemn. X, t. 147, f. 1381. 



Hab. in Mari Sinensi, secund. Budgen in Mus. Tank., Mus. Swainson, Borough, nost. 



Desc. Shell oblong, semicylindrical, of a bright orange-brown colour, with a rather acuminated short spire, suture com- 

 pletely hidden by a whitish enamel ; last volution with two belts and a deep groove above the columellar varix, which is whitish 

 and closely striated ; the varix is rather shorter than in A. Candida and the aperture rather smaller, of a fulvous colour, acuminated 

 at the superior extremity, wide and effuse below ; a single prominent tooth is observable at the extremity of the upper belt near 

 the lower edge of the outer lip. 



In general form this beautiful and exceedingly rare species very nearly resembles Ancillaria Candida. The figure in Chemnitz 

 which I have cited is referred to by Lamarck for his A. cinnamomea, from which, however, it differs materially; and it accords 

 perfectly with Swainson's A. effusa, except, indeed, that it does not show any tooth near the base of the outer lip ; this is, however, 

 accounted for in Chemnitz's description, where, he states that the upper groove terminates in a tooth on the edge of the outer lip 

 near the base ; but that it is worn off in most of the specimens. 



ANCILLARIA CINNAMOMEA. Fig. 10 to 13. 



A. testa oblongd, ventricoso-cylindraced, castaneo-fulvd, anfractibus superne albido-fasciatis; anfractu ultimo balteis duobus 

 basalibus, varice columellari rufo, oblique striato ; aperturd superne acuminata, subtus effusd ; labio externo prope 

 basim unidentalo ; long. 1, lat. -fa, poll. 



Ancillaria cinnamomea, Lam., Anim. sans vert. VII. p. 413. 



Var. l ma testa, pallide aurantiaco-fulva, varice albido ; A. abifasciata, Swainson in Journal of Science, §-c. XVIII. p. 276. 



Var. 2 a testa, omnino albicante. 



Desc. Shell oblong, rather ventricosely cylindrical, of a yellowish-chesnut colour, with a white band at the top of each 

 volution ; last volution with two basal belts ; columellar varix rufous, thick, oblique and striated ; aperture acuminated at the upper 

 part, very slightly emarginated and effuse below; outer lip with a single short tooth near the base. 



That the beautiful little shell here described and figured is the A. cinnamomea of Lam. I feel quite authorized to assert; 

 although Swainson has described another species under that name. My shell accords perfectly, in every respect, with Lamarck's 

 description. Of the two figures which he has cited, that in Encycl. Meth. t. 393. f. 8. a. b. is so bad that it cannot be referred 

 with certainty to any known species; and Chemn. X. t. 147, f. 1381 has a white varix, in which respect it differs from Lamarck's 

 description ; it is Swainson's A. effusa. A variety of the shell here described, and in which the varix is whitish, must be Swainson-'s 

 A. albifasciata. In my shell there is a little tooth near the base of the outer lip, which is not mentioned in Lamarck; 1 must 

 here, however, observe that neither does he mention this little tooth in any of his descriptions except in that of A. Olivula, 

 although it may be seen in four others. 



ANCILLARIA ALBI SULCATA. Fig. 14 to 19. 



A. testd ovato-oblongd, subventricosd, castaned ; spird brevissimd, plerumque mucronatd, nonnunquam obtusissimd, ad basim 

 obscure albido -fasciatd ; anfractu ultimo ad basim balteis duobus instructo, margine superioris albo : sulco supra 

 varicem inconspicuo ; varice albo, obliquo, striato ; aperturd superne acuminata, subtus effusd ; margine labii externi 

 superne plerumque crassiusculo, infra acuto, unidentalo ; long. \-%, lat. \§, poll. 

 Syn. Ancilla marginata ? Sowerby in Genera of Shells, Jig. 1 . 

 Ancillaria cinnamomea Swains, injourn. of Sc, Lit. and Arts, XVIII, 277. 

 Hab. in Oceano Indico : mus. Swainson, Goodall, Broderip, nost. 



Desc. I have given above the dimensions of the largest specimen I have met with ; the proportions sometimes vary a 

 little because the mucronate tip of the spire is occasionally gone. Shell ovately-oblong, rather ventricose, and generally of a light 



