186L] M. O. A. L. MORCh's REVIEW OF THE VERMETIDiE. 1G9 



character as those seen m fig. 16. In the brim of the under side 

 are here and there some of the kind, shown by small sharp points, 

 which look like imbedded sand-corns. 



Hab. Lord Hood's Island ; two associated specimens half sunk 

 in the surface of a dead coral (coll. Cuming.). 



The smaller specimen has the aperture incomplete, and shows on 

 both sides an auriculated production formed by the lateral angles ; 

 the upper side of the aperture is inflected like the striae of growth, 

 whilst that of the adult specimen is straight. The first part of the 

 whorls is entirely concealed by the coral which, perhaps, has over- 

 grown it. This, however, is not clear, because a saw has been used 

 to diminish the size of the coral. 



Var. ^. PR^LONGA. 



T. repens, corrodens, gracilis, fere per totam longitudinem cBqualis, 

 utrinque obtuse rectangidata, inferne elevato-co7ivexa, tenuis, 

 superne crassa, plana, Icevis, sebacea, sordide alba, varicibus hue 

 illuc parvis acutis oblique arcuatis ; strice et rugce incrementi 

 obsoletcE, arcuatce, granulis oblongis obsoletissimis ; anfr. primi 

 laqueati conjuncti, lateribiis inferne dilatatis ; septa frequen- 

 tissima, cylindraceo-convexa, tenuia ; apertura parva, superne 

 arcuata reducta, lateribus rectis. 

 Long. 64-82 dm., long, cavitatis 12 dm., diam. transv. aperturae 

 10-11 ni., crassitie superne 6 m. 



Hab. Lord Hood's Island, a detached specimen; the exterior 

 layer of the shell is wanting on the under side, which proves it has 

 been burrowing. This enormously long and very narrow shell differs 

 chiefly from the preceding by its smooth tallow-like, slightly shining 

 surface ; the striae of growth are only a little foliaceous in unexposed 

 places ; it has nearly the same diameter throughout its length from 

 the mouth, whilst var. t increases somewhat more rapidly. The 

 transition between the above-described varieties seems so evident to 

 me, that I do not dare to distinguish any of them specifically, not 

 even the last. An allied species from the island of Tubal, in the 

 Red Sea, collected by Riippell, is indicated by Leuckart, ' Neue Wir- 

 bellose Thiere,' 1827, p. 39. 



Vermiculus, Lister, Hist. Conch. 1688, t. 548. 



Tubulus, Schwammerdam, Bibl. 1/38, p. .50. t. 7.f. 5, 6. 

 Sipho7iium, no. 3, Browne, Jamaica. 



Vermicularia, Lam. Prod. 1799 ; System, 1801 ; Bowd. Elem. 

 1827. 



Vermetus, Gray, Gould, Adams, Stimpson, Carp., non Adanson. 



Testa varie torta, juventute turritelloidea. 



Operculum magnum, superne concaviuscxdum, laminis concentricis 

 suprapositis margine laciniato, limbo rejlexili ; inferne con- 

 vexiusculum, itnpressione musculari confertissime concentrice 

 lirulata. 



Stimpson has described the animal thus : — " Mantle fringed at its 



