542 PEOCERDINGS OF THE GEOLOGICAL SOCIETY. 



14. ALAELi RUDis, spoCe nov. PI. XIY. fig. 24. 



Shell turreted, fusiform ; whorls 5-6, convex, ohtusely carinated 

 on the middle portion, rather fiat below and angnlated above ; 

 suture indistinct ; last whorl extended ; aperture oblong. 



The surface of the only example I possess appears smooth ; but 

 probably it had originally fine transverse strite, Avhich may have 

 been abraded. The outer lip is concealed, so that it cannot be seen 

 whether it possessed digitations. Eor this reason it is, with a little 

 hesitation, placed in this genus. 



Log. The coralliferous Liassic conglomerate of Brocastle. 



15. Alaeia eusieoemis, spec. nov. PL XIY. fig. 25. 



Shell fusiform, small ; spire elevated ; whorls 5-6, convex, an- 

 gulated and divided by a deep suture ; towards the base of the 

 whorls are two distinct, slightly nodulated carinas ; surface orna- 

 mented by faint longitudinal. striae ; canal short, straight. On the 

 back of the body-whorl are three more-elevated carinas ; but, as the 

 lip and mouth of the shell are not exposed, the character of the digi- 

 tations are unknown. 



It is from the coralliferous conglomerate of Brocastle, the lowest 

 bed in which this genus has yet been recognized. 



16. Ceeithium pentacost^, spec. nov. PI. XIY. fig. 13. 



Shell rather small, pyramidal ; whorls short ; longitudinal costae 

 seven in number, straight, strongly marked and elevated, and con- 

 tinuing to the base of the shell ; whorls but slowly increasing, and 

 crossed by encircling striae ; mouth small, rounded ; lip folded ; no 

 canal. 



This shell is not uncommon, though not often perfect. It is from 

 the Liassic conglomerate of Brocastle. 



17. Ceeithium planicostatum, spec. nov. PL XIY. fig. 10. 



Shell conical, regularly tapering ; apex subacute ; whorls 8, 

 flattened, or slightly convex, and separated by a slight suture. In 

 its younger stage the whorls are most convex and possess a slight 

 carina on the middle, which becomes obsolete on the lower ones. 

 The surface is ornamented by numerous, close -set, depressed, curved, 

 longitudinal costae ; base flattened, with faint striae ; aperture not 

 well exposed. 



Of this pretty species I possess but one example. It aj)proachcs 

 nearest the 0. Ilenrici of M. Martin, but may readily be distinguished 

 from that species by its less convex volutions, its more angnlated or 

 flattened base, and by its finer and more numerous costae. 



Log. The coralliferous Liassic conglomerate of Brocastle. 



18. Ceeithium pellucidum, spec. nov. PL XIY. fig. 11. 



Shell thin, small, cylindrical, rather pellucid; whorls slowly in- 

 creasing, smooth, narrow and convex, divided by a rounded suture, 

 which is bounded by an encircling depressed striation ; aperture not 

 exposed. 



