1861.] M. o. A. L. morch's review of the vermetid.e, 155 



Operculum nudum (?) membranacemn, pallideflavum, siiperne leviter 

 concavum, area centrali vivide coccinea, lirula circulari mediuna 

 circumdata ; inferne convexiusculum ; area muscularis fiava 

 opaca, mammilla centrali conica prominente, limbus pallidejlavus 

 nitidus. 



Diam. 1^—2 m. 



California : about ten specimens deeply imbedded in the surface 

 of a young Haliotis splendens (coll. Cuming). 



This species is to be distinguished from the preceding by its nar- 

 rower whorls, smaller size, prominent and regular strise of growth, and 

 the absence of longitudinal lirae. It is difficult without the operculum 

 to distinguish this species from Spiroglyphis spiruUformis, Serres. 

 The Stoa ammonitiformis, stated by M. de Serres to be found on 

 Haliotis californiensis, is very likely the young of this species ; but 

 the figured typical form from the East Indies differs in the whorls 

 being broader and cyhndrical. If the Spiroglyphus from Upper Cali- 

 fornia, mentioned by Carpenter (Report, p. 324), is from the Cu- 

 mingian collection, it must be this species labelled California. The 

 opercukim closely resembles that of the young of the preceding, but 

 wauts the microscopical tufts, which are perhaps dependent on age. 



7. SiPHONiUM (Dendropoma) leucozonias, Morch. 

 T.planorbiformis, mperficialiter corrodens, tenuis, castanea, fascia 

 pallida vel alba laterali ; anfr. teretiusculi, utrinque obtuse an- 

 gulati, superne {nee lateraliter) liris circiter vi. obsoletissime 

 nodulosis; anfr.ultimus ayerturam versus antiquatus ; striae et 

 rug<B incrementi arcuatce, unde irregulariter reticulata ; aper- 

 tura circularis, plerunique subsoluta, rarissime immersa ; anfr. 

 ultimus interdum rectus. 

 Diam. testae cir. 8 m., aperturse 2\ m. 



Operculum rufescens, superne profunde concavum, opacum, con- 

 centrice liratum, peripheria margine angusto obscuro j inferne 

 convexum ; area muscularis opaca, concentrice bilirata, centra 

 mammilla valida concentrice subtiUssime ruguloso-striata ; lim- 

 bus latus nitidus, lineis duabus concentricis saturate rufis, peri- 

 pheria margine angusto albo. 

 Diam. 2 m. 



West Africa ; on a specimen of Purpura neritoidea, L., var. colu- 

 mella unimaculata ; about thirty-six specimens with a Vermetus 

 adansonii, Daudin ? The periphery below the angle is white and 

 without lirse. Most of the specimens do not burrow very deep, except 

 where they meet the nodules or ribs of the Purpura. 



Var. datur lituiformis. 



8. SiPHONiuM (Dendropoma ?) teredula, Morch. 



T. albescens, infundo interdum sordide carnea, repens corrodens, 

 varie torta vel glomeratu, anfr. teretes antiquafi, liris longitu- 

 dinalibus alternatim minoribus ; strice vel rugce incrementi 

 acuttB, subremotce, sigmoidece ; apertura circularis. 



Diam. circ. 2^ m. 



