ee 
273 
PLANAXIS NIGRITELLA, sp. nov. (Pl. XI. fig. 6.) 
P. testd ovato-lanceolatd, crassiusculd, fusco-nigridd, spird brevi, 
acutd, anfractibus 6, spiraliter sulcatis, interstitiis latis, planis, 
sulcis in medio anfractis ultimi obsoletis, aperturd ovatd, patuld, 
superne unidentatd, labro externo tenui, margine interno obsolete 
crenulato, labro columellari, superne striato, inferne abbreviato, 
levi; canali brevissimd, faucibus atropurpureis. 
Long. 5%, lat. =3;, long. apert. 3; unc. 
Straits of Juan del Fuaco. The operculum is preserved in some 
of the numerous specimens, and has a subspiral nucleus (see fig. 6 @). 
PLANAXIS PIGRA, sp. nov. (Pl. XI. fig. 5.) 
P. testd ovato-lanceolatd, crassd, flaveold, spira mediocri, acutd, 
anfractibus 6, planatis, levigatis, aperturd breve-ovatd, patuld, 
superne obsolete unidentatd, labris incrassatis, marginibus levibus, 
canali brevissimd, faucibus albis. 
Long. ;4,, lat. 2, long. apert. 7; unc. 
Its surface is invested with a soft yellow epidermis. The operculum 
is corneous, of subconcentric elements, with a lateral subspiral 
nucleus. 
Pitcairn’s Island. 
Nassa Cooper, sp. nov. (Pl. XI. fig. 4.) BH.\8SS.4.9.13 
N. testd lanceolatd, turritd, crassd, anfractibus’ 6, convexiusculis, 
spiraliter sulcato-striatis, longitudinaliter 8-costatd ; costis di- 
stantibus, fortibus, distinctis ; anfractu ultimo 3 longitudinis teste 
equante, aperturd ovatd, canali brevi; labro externo crasso, sim- 
plici; labro columellari reflexo, albo; caudd albd; anfractibus 
. fuscis, obscure albo-fasciatis. 
Long. 58; unc., lat. anfr. ult. 4,, long. apert. 38. 
Marked from the Sandwich Isles. Dedicated to Lieut. Cooper, 
R.N., of the ‘ Herald.’ 
Nassa Woopwarpt, sp. nov. (Pl. XI. fig. 3.) BHASSS.4-S.1S 
N. testd lanceolatd, turritd, crassd, albd, rufo-fasciatd, anfracti- 
bus sex convexiusculis, spiraliter sulcaiis, longitudinaliter dense- 
costatis, spird vir longitudinem ultimi anfractis equante ; aper- 
turd ovatd, caudé brevissimd; labro columellari reflerd, albd ; 
caudd alba ; fauce striato. 
Long. 5; unc. ; lat. =, unc. ; long. apert. 7; unc. 
With the last. Dedicated to — Woodward, Esq., R.N., Purser 
to the ‘ Herald.’ 
PuRPURA ANALOGA, sp. nov. (Pl. XI. fig. 12.) 
P. testa turritd, albidd, spiraliter lat rufo-fasciatd ; spird exsertd ; 
anfractibus 5 rotundatis, costis spiralibus (6 ad 8 in anfractu 
penultimo), quadratis, numerosis cinctis, interstitiis crenulatis, ad 
suturam obsoletis, labro subdenticulato. 
Long. 1,4;, lat. 58, long. apert. 58; unc. 
This species (from the Californian coast ?) bears a striking resem- 
blance to the Atlantic Purpura lapillus, and is termediate between 
No. CCXVIII.—ProcerepineGs or THE ZootocicaL Soctery. 
