1893.] yrEVf species of pleubotomid^. 491 



in sculpture it resembles D. Jactea, but the spiral ridges are closer; 

 in form it approaches D. Jlammea and D. subula. 



DEFEAifCiA LNFKACiNCTA, n. sp. (Plate XXXVIII. figs. 21, 22.) 



Testa oblonc/a, solicla, carnea ; sjnra mediocnter elata, ad apicem 

 acuta ; anfractus 8, convexi, linea fusca temdssima oimati, 

 sjpiraliter lirati, longitudinaliter costati, costis numerosis, 

 rotundatis ; anfractus xdtimus vix injlatits, infra medimn leviter 

 constnetus, fascia fusca conspicua pictiis ; apertvra hreviuscida ; 

 labrum extus incrassatum, inius serratum, svperne profunde 

 simiatum, canali brevissimo, 



Lonrj. 10, maj. diam. 4 millim. 



Hab. Mauritius. 



A rather rough shell, with numerous rounded ribs, crossed 

 by close-set raised ridges. The con.«;picuous band near the base 

 surmounted by a thin brown line seems characteristic. 



Defbaxcia MAmiTiAJS'A, n. sp. (Plate XXXA^III. figs. 23, 24.) 



Testa turrita, albida, maeidis fuscis promiscuis picta, imdiqve 

 costis numerosis conferiis gramdatis sctdpta ; spina elata, leviter 

 convexa, ad apicem acuta; anfractus 9, f/radati, levissime 

 convexi ; sutura impi'essa ; anfractus vlthnus spiram vix 

 cequans, haud injlatus, rectivscidus, ad basini constnetus ; 

 apertura parviuseula, ohlonr/a ; labrum crenulatum, ino'as- 

 satxim, superne sinu prof undo emarc/inato, inferne abrupte 

 constrictmn, canali brevissimo. 



Long. 10, maj. diam. 3 millim. 



Hab. Mauritius. 



A conspicuously painted species, with a strongly granulated 

 surface ; the constriction of the base is peculiar. 



Ctthaba gtjentheei, n. sp. (Plate XXXYIII. figs. 27, 28.) 



Testa solidiuscula, utrinque acuminata, albida, pallide fxisco tincta 

 et vittata, postice purpureo tincta ; sjnra elato-conica, cjradata ; 

 anfractus 10, angulati, undique spiraliter striati, longitu- 

 dinaliter costati ; anfractus idtimus spiram superans, convex- 

 iusculus, basin versus attenuatus ; apertura elongata, angusta ; 

 columella levissime curvata, albo-callosa ; labrum extus incras- 

 satum, ad marginem acutum. 



Long. 25, mcij. diam. 11 ; apertura longa 15, lat. 3 millim. 



Hab. Holothiiria Banks, N.W. Australia, 38 fathoms. 



A beautiful delicately sculptured shell, hitherto without name, in 

 the British Museum Collection. 



CTTELiEA EiKGENs, u. sp. (Plate XXXYHI. figs. 29, 30.) 



Testa abbreviata, angulata, utrinque acuminata, alba ; s/nra 

 conica, ad apicem acuta ; anfractus 7, angidati, longitudinaliter 

 costati, spiraliter subtilissime striati ; sutura anguste canali- 

 adaia ; anfractus ultimus spiram superans, angulatus, supra 

 angulum leviter concavus, deinde vix convexus, basin versus 



