68 M. o. A. L. morch's review of the vermetid.e, [Feb. 11, 



Serpula dentifera, Lam. v. p. 367. no. 24. 



Magilus dentiferus, M.-Edw., Lam. v. p. 625. 



Vermetus dentiferus, Rouss., Chemi, 111. t. 4. f. 1 (med. et sup.). 



Vermetus dentiferus, Blv, Diet. Sc. t. Ivii. p. 325. 



Hah. Les mers de I'Asie australe (Lam.). 



"■ Tube assez grand, a coupe circulaire, contournee irregulierement, 

 a stries d'accroissement grossieres, rugueuses, et d'autres fois pourvu 

 de deux a trois petites cotes on carenes longitudinales, dentiferes, ou 

 mieux tuberculeuses. Couleur d'un rouge brun, mais quelquefois 

 blanche. Cette espece, qui oifre une premiere variete, dont les tubes 

 sont subsolitaires, et une autre ou ils sont subanguleux et agglomeres, 

 vient des mers de I'Asie australe. EUe n'est peut-etre pas distincte 

 de la S. arenaria, qui, comme elle, n'est qu'un Vermet. Un individu 

 de la collection de M. Lamarck m'a meme offert son opercule corne." 

 — Blainv. Diet. Sc. t. xlviii. 1827, p. 558. 



In Mr. Cuming's collection are several specimens from Australia 

 which seem to me to agree pretty well with the above description, but 

 which differ from the upper figure of Chenu in having less. prominent 

 nodules. The lid mentioned by Blainville is very likely found in the 

 var. d. of Lamarck, which I suppose is Siphonium nehulosum, Dillw. 



Var. a. repens. 



T. repens, affixa, tenuiuscula,flavescens; lircB longitudinales parvce, 

 expressce, subremotce, liris incrementi minorihus subundulatis 

 approximatis deciissat(B ; inde suhtiliter reticulata ; lircc tres 

 prominentiores, incequales, nodulis linearibus remotis, macxdis 

 linearihus fuscis interpositis ; rugce transversce validce, irregu- 

 lar es ; varices breves, irregulares, scepe 3-4. 

 Diam. aperturse circ. 9 m. 



Hah. Australia ; Swan River, creeping on a Cardium ; Cape Up- 

 start (Mus. Cuming). 



The Vermetus dentiferus (Q. & G.) approaches this variety in 

 shape, but looks very different in colour and in the form of the 

 aperture. The following species is very likely only a narrow form 

 of the type, depending on its being agglomerated. 



4. Thylacodes sulcatus. Lam. 



T. teres, inferne contorta, subglomerata, antice porrecta ; cos- 

 tellis longitudinalibus timnerosis, subdentatis (Lam.). 



Serpula sulcata. Lam. v. 1818, p. 367. no. 22, ed. 2. v. p. 625 ; 

 Blainv. Diet. t. xlviii. p. 558. 



Vermetus novce hollandice, Rouss., Chenu, 111. pi. 1. f. 4a, vix 5. 



Hab. Les mers de la Nouvelle Ilollande (Lam.) ; Kangaroo 

 Island (Mus. Cuming). 



The description and locality of Lamarck seem to me to agree 

 perfectly with the shell represented by Chenu, which has also the 

 same calibre as the Dofan (Adanson), quoted, with a query, by La- 

 marck. This shell differs only from the preceding species in its 

 smaller calibre, very likely dependent on its being agglomerated 



