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AMERICAN JOURNAL 



MiTROPSis FUSiFORMis, Pease. — Plate 15, fig. 2. 



Description. — T. fusiformi, utrinque attenuata, nitida, spira 

 gracilis ; anfr. longitudinaliter costatis, costis subremotis, rotun- 

 datis, e suturas descendentibus, anfr. ultimo gibboso, transversim 

 tenuiter striatis ; sutura sulcata ; basi transversim sulcata ; ca- 

 nalirecurvo; omninoalba; columella quadriplicata. 



Dimensions. — Long. 7, diam. 3 mill. 



Habitat. — Paumotus. 



Shell fusiform, much attenuated at both ends, white, shining, 

 spire small, slender ; whorls longitudinally ribbed ; ribs rather 

 remote, rounded, descending from the sutures, last whorl gibbous 

 on its right side ; transversely finely striate ; sutures widely and 

 deeply grooved; base grooved, transversely; canal recurved; 

 columella four-plaited. 



Remarks. — We have no doubt but that the above species is a 

 Mitrid, although its sculpture and the distinct sinus on outer lip 

 connect it with the Pleurotomidae. The callosity bordering the 

 inner lip gives it a Columbelloid appearance. 



TuRRiCDLA MODESTA, Pease. — PI. 15, fig. 6. 



Description. — T. fusiformis, subharpjBformis, loevis, polita, 

 longitudinaliter plicato-costata ; costis 11, superne, vix tuber- 

 culatis, interstitiis longitudinaliter, lasviter striatis ; spira tur- 

 rita, acuta, longitudinis testre baud sequans ; anfr. superne ob- 

 lique angulatis ; canali brevi, vix recurvo ; columella quinque 

 plicata ; apertura intus lirata ; alba, lineis tribus, rufo-fulvcs- 

 centis cincta, apice purpurascente. 



Dimensions. — Long. 25J, diam. 12 mill. 



Shell stoutly fusiform, somewhat harpteform in shape, smooth, 

 shining, longitudinally plicately ribbed, ribs eleven, subtubercu- 

 late above, interstices concave, irregularly and finely striate 

 longitudinally ; spire rather less than one-half the length of the 

 shell, turrited, acute ; whorls obliquely angulated above ; canal 

 short, slightly recurved ; columella five-plaited ; aperture lyrate 

 within. 



Color white, encircled by three reddish-yellow lines ; apex 

 purplish-black. 



MiTRA PLAMMULATA, Pease. 



Description. — T. solida, IfBvigata, nitida, ovato-fusiformi, 

 utrinque vix attenuata, transversim subtilissime striata, basi 

 sulcata, apice acuta, tenuiter longitudinaliter costata ; anfr. 9, 



