Miscellaneous. 309 



^Pmcostata and Freycinetii (a Kamtschatka shell) : it. is probably a 

 variety of the former. \^i ,bi»\$rAbsKw aw-^^j^vr* 



Purpura fuscata, sp. uov. 



P. testd ohlongd, subtitrritd, fused ; spird brevi ; anfractibus con- 

 sm. vejcis, costis spiralibus (2 in anfractu penultimo) paucis distan- 

 tibus subsquamosis cinctis, interstitiis <QQ9fM.PM^.9jfAi§.i..fiP(^XtUi'4 

 dilatatd, columella albidd. ^ „„ »„«,„„,,». ,cr 



Long. 1-iV, lat. yV, long, apert. 3^ unc. . ^^ 



A species of the Lapillus group. Said to have beeil taKBft'at the 

 Sandwich Islands. --.< , ^'^ 



Among the Purpurce in the collection are P. planospira^ P. colu- 

 mellaris, and P. Carolensis^ all Galapagos species, and^p^bably col- 

 lected during the visit to those islands. :^^/ *'2T •P,*'^^^ 



Fusus Kelletii, sp. nov. ,2uo'3inoa ai 



i?*. /esM crassd, fusiformi, pi/ramidatd, anfractibus 9, spiralit^^'stpii- 



atis, angulatis, noduloso-costatis, costis in anfractibus omnibus 8, 



prope suturam obsoletis excavatis appressisque ; anfractu ultimo 



.^^. |- tested occupante ; aperturd elongato-pyriformi, superne angulato ; 



-sfe inferne canali obliquo plus ^ apertures cequante ; labro columellari, 



■^\-? ■ ^^fl^^o, incrassato, labro externa attenuato, subdenticulato ; caudd 



^^ incrassatd, contortd, reflexd ; colore sordide albido, ore albo. 



,y,Xong. 3| unc. ; lat. max. anfr. ult. \-^^ unc. ; long, apert. 2| unc. ; 



long. caud. ■^^. 



This remarkable shell was taken on the Californian coast, and is 

 very distinct from any known Fusus. In general aspect it closely 

 resembles a Fasciolaria, reminding us strongly of the European Fas- 

 ciolaria tarentinay but is greatly larger and has no plaits on the 

 pillar lip. The striae which wind round the whorls are grouped in 

 twos and threes. They become very strongly marked and assume 

 the character of sulcations on the caudal portion of the body whorl. 

 The ribs are mainly developed a little above the centre on the angu- 

 lated portion of the body whorl and on the lower halves of the upper 

 whorls, so prominently as to appear like large tubercles. . 



I have dedicated this unique shell to the eminent conductor of this 

 important expedition. 



Fusus Oregonensis was taken on the .Californian coast, ajad F^ifulftr 

 brosus on the coast of Mazatlan. t-ai^xnu^ 



^^'^^^'^^'■^ MISCELLANEOUS. ■ - -■-'' ^^.^A.., 



On a Parasite which is developed under exceptional circumstances 

 on the surface of certain alimentary substances and c^uk/^^fhem 

 f, to appear covered with blood. By M. Montagne. ' ' ' . 



An extraordinary phsenomenon has just passed under my eyes, to 

 which I beg to call the attention of the Academy for a moment, i 

 had already some knowledge of it from two memoirs which have 

 treated of it specially, but had never witnessed it previously. More- 

 over this phsenomenon is so rare, that I am not aware of its having 

 ever been mentioned in this country. I am speaking of the develop- 



