D E i\ T A L I U iM. 



Species 1'.'. (Mil?. Kril.) 



Dextalu M sr.MlPOLiTUM. Dm. testa l,uin\ .iiihhydlin.l. 

 alhii, itiiyiistd. i-ersiis apiirm rosea pictd et temiiter 

 sfi/atd. ihiiiile ml man/inem piitiiifsiiiid ; apice 

 i„t,.jro. 



The half-polish i;n Dextaliim. Slu-il lluii, nitlicr 

 hyaline, white, thin, narrow, rose-tinted and finely 

 striated near the apex, thence to the margin highly 

 polished; apex entire. 



SinvKiiiiY. Thesaurus Conchyliorum, Dentalium, Sp. 21, 

 f. 2;i. 



Ilah. South Seas. 



Species 20. (Fig. a, h, Mius. Cum. in Bril.) 

 Di:ntalil-m tetragoxum. Den. testa alba, politd, 

 aolidd, a»;iiistd, rectiitsculd, apice el iistjiie aU 

 mi-'liiim qaadriijond, acute ant/nint'}, media el 

 usi/iii ad inarginetn mtiindatd. 

 The Fouii-siDED Dext.\lium. Shell white, i>olished, 

 solid, narrow, rather straight, at the apex and as 

 far as the middle four-sided, acutely angular, at 

 the middle and as far as the margin rounded. 

 So\VKi;i;v. Thesaurus Conchvliorum, Sp. 10, f. 21, 



Ifal/. West Columbia. 



Species 21. (Mus. Bril.) 

 Dentalil'M DEXT.U-E. Deti. te.std e/onipitd, einffiisld, 

 rugasd, ruhro et aura7itio faaciatd, eoscellis duodecim 

 et sfriis minutiisimis iiUerstitialiliKS seulptd : apice 



The tooth-like Dextali'm. Shell 

 rugose, Ijanded with red and i 

 with twelve small ribs and very 

 stris ; apex entire. 



:at.'d. 



Lixx.trs. Sy.stc'nia Natura'. 

 //-(/-. Mediterranean. 



In Dentidinm Lesfaiii the interstices are smooth, and 

 the whole circumference becomes smooth and polished 

 towards the margin ; but in this species the ribs are 

 continuous and the interstices .striated. 



Denta 



^locies 22. (Fig. a. //, e, Mus. Brit. ) 

 11 Lessoxi. Deii. testa elongatd, amjustd, 

 acuminata, la;vi<jatd, rubra vet aurantio, vel fulvo 

 fasciatd, costellis duodecim, versus marginem 

 eranidis laqueatd ; interstitiis poiitif ; apice in- 

 ttgru. 



Lessox'.s Dextaliim. 

 nated, smooth, i 

 brown, fluted with twelve riblets which become 

 nearly obsolete towards the margin ; interstices 

 polished ; apex entire. 



Desh.\yes. Monograph of Dentalium. 



I/ab. Mediterranean, Algiers, &c. 



Shell elongated, narrow, acumi- 

 d or orange banded with Ught 



(Mi; 



Brit. ) 



Cuming 



De/i. testd 

 moderati: arcuatd, 

 edio et versus in, 



.•specie 



Dentalium rsECDosEXAGONUii, 

 angustd, Icevigatd, alba, r. 

 apicem acute hexagond 

 rotunda et striata ; apice integro. 



The pseudo-sexagonal Dentalium. Shell thin, 

 smooth, white, moderately arched, acutt 

 sided towards the apex, rounded and 

 towards the margin ; apex entire. 



Deshayes. Monograph of Dentalium. 



Hah. West Columbia and Lsl. Masbate, Phllipp 



teuui, 

 , versiin 

 argiiievi 



narrow, 

 Iv six- 



Xovember, 187: 



