1861.] M. O. A. L. MOKCh's REVIEW OF THE VERMETID^. 157 



11. SiPHONiuM (Stoa) platypus, Morch. 



T. solidissima, corrodens, spira planorhiformis anfractibus an- 

 gustis, anfr. ultimus ovalis, aperturam versus planus, utrinque 

 obtuse angulatus, strice et stratcB incrementi arcuatce remoteB 

 irregulares in latere externa acutce ; apertura circularis obli- 

 qiia, peritremate superne crasso ; color albus, faucibus fusces- 

 centilus. 



Diam. aperturae 7 m. 



Operculum tenue pellucidum palUde flavum, superne concavum 

 laminis eoncentricis circiter 4 obsoletis appressis ; in/erne con- 

 vexum, limbo nitido latiusculo ; itnpressio muscularis opaca, 

 centro convexo lato aurantiaco, tuberculo minimo elongato sub' 

 centra.li (an morbo ?). 



Diam. 65 m. 



Animal rostro brevissi?no; capite depressiusculo, utrinque acute 

 carinato, inf erne fornicato excavate et transversim pulcherrime 

 lirato ; tentacula brevia obtusiuscida oculos ad basin externum 

 gerentia ; os minutum infundibuliforme ; propodium foliaceum 

 antice hilohatwn, utrinque cornu tentacida duplo vel triplo su- 

 perante. Mesopodium P postice uti bituberculatum. Capite 

 superne et tentaculis utrinque maculis nigris irregularibus or- 

 natis. Ex specimine desiccato. 

 Hab. Sandwich Islands, on a Chama. The specimen has bur- 

 rowed in its own spire. This shell resembles very much the larger 

 figure of Stoa perforans, M. de Serres, but is considerably larger, 

 and has the whorls flattened. The operculum is more flat than 

 conical. 



12. SiPHONiuM (Stoa) da-cost^, Morch. 



Serpida, Humphrey, Conchology, t.^ f. 15. _?C/^ 



Spiroglyjihus da-costcB, Morch, Journ. de Conch. 1860, p. 46. n. 8. 



Since the above name was published I find in my note-book that I 

 have seen this shell, perhaps the very specimen of Humphrey, in the 

 cases of the British Museum, under a more correct name. Althouo-h 

 I have not at present any specimen for comparison, I suppose this 

 species is sufficiently distinguished by its crest and want of longitu- 

 dinal grooves. It appears to be one of the largest burrowing Worm- 

 tubes. 



13. SiPHONiTJM (Stoa) subcrenattjm (Lam.). 



" T. rejietite Jlexuosa, albida ; carina dorsali carinisque latera- 



libus dentato-creuatis, operculo brevissime conico. 

 " Ocean indien, sur le Spondyle mutique. Elle se creuse un lit 

 sur la coquille " (coll. Lam.). 



Vermilia subcrenata. Lam. 1818, v. p. 370; ed. Desh. v. p. 634 : 

 Blv. Diet. Set. 57. p. 329. 



Steal subcrenata, M. de Serres, Ann. Sc. 1855, v. p. 240. 



The shell represented in Cheuu's Illustrations, pi. 9. f. 3, et pi. 10. 



