24 



but the actual fossils side by side are very diflferent. I have 

 named this after my esteemed friend, Mr. W. H. Archer, the 

 learned Victorian statist, whose labours in every branch of 

 science are well known. 



Triton Abboti, n.s., T. testa eJongata, acuta, ttirrita, varicihus 

 tribus,longitud. striatis,striis plus minusve interruptis vel nodosis, 

 (ad lab. et canal, recjulariter alternatis) ; anfractibus irregulariter 

 convolutis, glohosis, angulis tuherculisque hiseriatim armatis ; 

 ultim. anfract. canali longo, arcuato, recurvo, aperto, terminato ; 

 apertura ovata Integra, lahro incrassato, intus denticuluto. 

 Long. 50. Lat. 30. 



Triton shell elongate acute, turrited, with three varices, 

 spire-twisted, whorls globose, armed with two sharp angles, 

 on which are a series of sharp tubercles, the upper larger, 12 

 in first whorl, the lower becoming very small and obsolete at 

 the outer lip, shell long, striate, the striae becoming obsolete 

 or dotted, at the mouth on alternate lines ; last whorl termi- 

 nating by a long, open, arched, and recurved canal, aperture 

 entire, outer lip denticulate interiorly. 



This shell I have dedicated to Mr. F. Abbott, the curator 

 of the Royal Society's gardens. It is common. As in other 

 shells in these beds, there are distinct traces of color on the 

 shell, which has a bluish ground, with brownish square spots 

 in zigzag lines. 



Ceassatella aphrodina, n.s. C. testa trigono-ovata, ohliqua, 

 tumida, crassa, tenuiter striata et sulcata, umbonihus sulcatis 

 angustls ; lunula impressa, latere postico subangulato,productiore. 

 Long. 53. Lat. 44. 



C. shell ovately trigonal, oblique, solid, faintly striate and 

 sulcate, umbones sharp, with more distinct sulci, lunule im- 

 pressed, posterior side subangulate and prolonged. 



YoLUTA Weldii, U.S., V. testaovato-conica, ventricosa, solida, 

 long, tenuissime striata, spira conica, mammillata ; anfractibus ad 

 anqulum tuberculis acutis coronatis (tuber, tiltim. anfr. 9) / aper- 

 tura angusta ; labro simplici, crassiusculo, sup>erne emarginato ; 

 columella arcuata, medio 4i-plicata ; callo magna. Long. 41. 

 Lat. 22. Anf. 8. 



V. shell ovately conical, ventricose, solid, long, finely striate ; 

 spire conical, mammillate ; whorls with sharp-edged tuber- 

 cles at the angle (last whorl 9, and coming towards the middle 

 of the whorl near the aperture}, aperture narrow, lip thick- 

 ened, simple, emarginate above, columnella somewhat curved 

 with four plaits in the middle, enamel, widely spread over the 

 lower part of the shell. 



This shell is very near Nyst's Voluta depressa Lam. (See 

 Nyst Eecherches sur les coq. foss de Hoesselt et de Kleyn 

 Spauwen. p. 37, no. 29, et pi. iv., fig. 99.) It is a miocene 



