154 M. O. A. L. MORCh's review OF THE VERMETID^. [April 9, 



T. teres repens varie torta, lactea in fundo ferruginea, liris longi- 

 tudinalihns subremotis, lira mediana scepe valida, strice et rugce 

 incrementi arcuatce, intersectionibus squamiferis ; interstitia 

 lirarum obsolete foveolata ; apertura circularis obliqua ; diam. 

 4-5 m. T. juventute Iceviuscu/a liris obsoletis, nitida, tenuis, 

 castanea, plerumque planorbiformis. 



Operculum tenuiusculum fiavum, superne sat concavum, laminis 

 2-3 concentricis suberectis, punctis asperis munitum, area 

 centrali aurantia, centro impresso plerumque flavo ; inferne 

 planiusculum, limbo tiitido pallido convexo ; impressio muscu- 

 laris opaca, cerea, concentrice ruguloso-striata, lirula circulari 

 terminata ; m,ammilla centrali validissima obtuse conica. 



Diam. 3g m, 



Asperitates oculo armatissimo inspect ix arbor escentes ; stirps ro- 

 hustus brevis, ramis tribus porrectis incequalibus, lateraliter 

 biaculeatis, vertice aculeis 4-6 ; aculei longi subulati leviter 

 arcuati sed plerumque fracti (fig. 13). 

 California ? : numerous specimens burrowing, but not very deeply, 

 in the surface of a Haliotis nodosus. Reeve. The small vaulted com- 

 pressed scales of the grooves seem to be caused by numerous small 

 holes of perforating animals, chiefly those of Cliona, which have 

 made the surface of tlie Haliotis very rough ; but it must be ob- 

 served that the Fermeti themselves are also attacked. 



Var. Centiqtjadra. 



Aletes centiquadrus, var. imbricatus, Carp. Cat. p. 302. 



T. brunnea fundo albescens, planorbiformis, semi-immersa, anfr. 



planati utrinque obtuse angulati, longitudinaliter lirati ; lirte 



subcBquales approximatcB, strice et rugce incrementi arcuatce, 



intersectionibus nodulis obsoletis subremotis, vel in locis obtectia, 



squamulis asperis remotis munitis. 



Diam. testae 20 m. ; diam. aperturse 3-4 m. Operculum ignotum, 



California : a single specimen deeply burrowing in an Haliotis 



splendens, Mawe. The sculpture and colour of this shell, which I 



only regard as a variety, bring to mind the Aletes centiquadrus, Val, 



6. SiPHONiuM (Dendropoma) lituella, Morch. 



Stoa ammonitiformis, M. de Serres, Ann. des So. I. c. p. 242, note. 

 Spiroglyphus, sp.. Carpenter, Report, p. 324 (verisimiliter) . 



T. varie torta plerumque lituiformis, profundissime immersa; 

 anfr. graciles plani, utrinque obtuse angulati, scepe fossula Ion- 

 gituditiali mediana, unde carina vel lira obtusa lateris externi; 

 strice et lirce incrementi arcuatce, approximates, regulares ; aper- 

 tura circularis interdum obliqua, nonnunquam soluta ; color al- 

 bescens vel cinereus, interdum fascia obsoleta fusca, anfr. primi 

 badii. T. infantilis nitida, apice bullata. 



Diam. ap. 2 m. {drciter). 



