PLEUROTOMARIA. 395 
Pleurotomaria phyospira, Deslong. 
~— subfasciata, d’Orb. (crenata, Deslong.). 
— ef. subdecorata, Minster. 
— Allica, @ Orbigny. 
Sub-section.— Whorls more angular, ornaments sometimes reticulate throughout; 
sinus-band situate at the angle, and rather less median. 
Pleurotomaria subreticulata, d’ Orbigny. 
a textilis, Deslongchamps. 
Section 5.—ORNAT!. 
Shells turrited, trochiform, turbinate or discoidal, with great range as to size ; 
always umbilicate, often largely so. Whorls usually angular and carinated with 
sutures often canaliculate. The ornamentation is rich, with extensive and varied 
tuberculation on the carinez. The sinus-band, except in Pl. ornata, Sow., is very 
wide, nearly median, flat or rarely projecting, and in the later whorls without 
much spiral striation. 
Pleurotomaria paucistriata, dOrbigny. Vee 
— Proteus, Deslongchamps. | TOSI TOO 
— armata, Minster. 
— cf. Sauzeana, d’Orbigny. 
— tuberculosa, Defrance. | 
a ornata, Sowerby. | Ornata-group. 
— ornata-depressa, Sp. Nov. | 
— Actexa, d Orbigny. 
— oxytera, Sp. NOV. 
a Baugieri, @ Orbigny. 
— actinomphala, Deslongchamps. 
_- Mopsa, d’Orbigny. 
_— mirabilis, Deslong. (micromorphic variety). 
Sub-section.—Shells turrited, attaining a great size, umbilicus small or ail. 
Whorls subtabulate with rich sculpture, and often much tuberculate ornament on 
the carine. 
Pleurotomaria subaraneosa, sp. nov. 
— ef. araneosa, Deslongchamps. 
