﻿P T E R r 1) A. 



Plate IV. 



C.-nus CLEODORA. l\'n„i ,uid Lt>^„.;o: 

 Ti'ntii liyalind, pi/ramidata, hand luh'ralifer appcndi- 

 culnta, tricuspidafa ; aperturd, trigmui, lahro pro- 

 dncfn, rnstrato. 

 Slifll hyaline, pjo-amidal, withont lateral appendages, 

 tlirei'-s])ired ; aperture trigonal, outer lip pro- 

 duced, beaked. 

 Of the few species composing this genus the most 

 o.xcpiisitely beautiful is the Cleodora cuspidata. 



Species 2.2. (Fig. a, h, Mus. Brit.) 



Cl.KODOliA AusTRALls. Gle. testd anguste pyramidafd, 

 triiidiid, dorsn latenhusque carinato-aiujulatis, 

 ^pnu. htlrraUh,,, hrrnlbH.-; rfr.<H.. apfrturam de- 

 r,,/;., ../.in.! .,,.u-ni; acunu.d,! , ap.rtnnl trigond, 

 ,/^sr,. r,'„lrai; ,;„i,;,ro. 



TiiK AusTHALiAN Clkodora. Shell narrowly pyra- 

 initlal, trigonal, back and sides with carinated 

 angles, lateral spines short, raised towards the 

 aperture, apical spine acuminated, aperture tri- 

 gonal, ventral disc concave. 



D'Orwgny. Voy. Amer. Merid. T. VIII. f. 12-14-. 



Hab. Australia. 



!Mncli narrower than Cleodora pyraiuidata, which 



it otherwise resembles. 



Spt'cies 23. (Fig. a, h, Mus. Brit.) 

 Clkodoha CUSPrDATA. Clt'. testa oblungd, trigond, 

 transverse sinuatim liratd, laieribus dorsalibus 

 trigimis, carina dorsali acuta, in rostrum productd, 



ciu-inif hiti'ralihas brembus, loHgi.-ij^dnosin ; sjiind 



ni,ir,lli (!.■/;/;>■,</»), )', disCO Ventrall llfdi,, rmirr.tn, 



Thk rriiNlEli Cleodora. Shell oblong, trigomd, 

 transversely sinuously ridged, dorsal sides tri- 

 gonal, dorsal keel sharp, produced into a beak, 

 lateral keels short, with long spines ; apical 

 spine very sharp, ventral disc convex in the 

 middle. 



Q;;OY. Voy. Astro. II. PI. 27, f. 1-5. 

 Hab. Atlantic Ocean. 



The spines are long, and bend upwards from the 

 inverted apex, rather near which they take their 

 rise. 



Species 24. (Mus. ? Copied.) 



Cleodora lobata. Gle. tcstil httr iii/nimidatd, tri- 

 gond, transverse sinuatim lirntd ; spiuis latcra- 

 Kbns .'supra medium elevatis siirsiivi acelivihus ; 

 labrii producto, margine lobata. 

 The lobed Cleodora. Shell broadly pyramidal, 

 trigonal, transversely sinuously ridged ; latei-al 

 spines raised above the centre, sloped upwards ; 

 outer lip produced, margin lobed. 



SOWERBY. 



Hab. Atlantic Ocean. 



From the figure in D'Orbigny's work the writer 

 concludes this to be a distinct species, although 

 given as a variety of Cleodora pyramidata. It has 

 veritable spines at the sides, which are pointed up- 

 wards, and the dorsal surfaces are longitudinally 

 ridged, with correspondingly lobed labial margin. 



Species 25. (Fig. a, b, Mus. Sowb.) 



Cleodora pyramidata. Gle. testa latissime pijra- 

 ■tiiidatd, trigond, Icevigatd, facie ventrali ad latera 

 caticavd, medio anguste tumidd, cariiid- dorsali 

 acuta, ill rostrum acuminatum productd, aiigidix 

 lateralibiis expansis, acute subs^nnosin, inedianis, 

 horizontalib'us. 



The pyramidal Cleodora. Shell very broadly pyra- 

 midal, trigonal, smooth, ventral surface concave 

 at the sides, narrowly tumid in the middle, 

 dorsal keel sharp, produced into an acuminated 

 rostrum ; lateral angles expanded, sharply sub- 

 spinose, central, horizontal. 



QuoY. Voy. de I'Astrolabe, Vol. II. PI. XXVII. 

 f. 7-V.i. 



Hab. Atlantic Ocean. 



