(99) Galveston Wei<l Fossils 17 



Pleiirotoma {Drillia) quadricenteiinialis , n. sp. PI. 3, fig. 7. 



S}"!!. Plezuotoina, n. sp., Har., 4th Ann. Rep., p. 121. 



Specific characterization. — General form as indicated b}^ the fig- 

 ure ; whorls 8 ; i and 2 smooth ; 3 longitudinally costate ; the re- 

 maining whorls seven-costate, the costse on the different whorls 

 being arranged in line ; slit v&cy close to the suture ; body whorl 

 with numerous faint spiral lines ; beak long and but slightly de- 

 flected. 



Range in depth. — From 2,717 to 2,733 feet. 



Pleurotoma { Cithara) galvestonensis, n. sp. PI. 3, fig. 8. 



S}^. Cithara, n. sp., Har., 4th Ann. Rep., &c., p. 121. 



Specific characterization. — General form as indicated by the fig- 

 ure ; whorls 6 or 7; i and 2 smooth, very small; remaining 

 whorls increasing in size rapidlj^, 7-10 costate, with incised lines 

 noticeable especially on the body whorl ; spiral lines most pro- 

 nounced on the summits of the ribs and on the middle and lower 

 part of the bodj^ whorl ; every fourth or fifth line often noticeably 

 deep ; aperture about two-thirds the length of the whole shell ;. 

 labrum thickened both without and within. A tooth-like projec- 

 tion is often present in old specimens on the labrum not far from 

 the upper termination of the aperture. 



Range in depth. — From 2,236 to 2,871 feet. 



CANCELLARIA. 



Cancellaria clavatula. PI. 3 fig. 9. 



Syn. C. clavatula Sby, Proc. Zool. Soc. Lond., 1832, p. 52. 

 C. clavatula Har., 4th Ann. &c., p. 121. 



Ra?ige in depth. — From 2,552 to 2,600 feet. 



Cancellaria reticulata L,in. , var. PI. 3, fig. 10. 



Syn. C. reticulata^ var., Har., 4th Ann. &c., p. 121. 



The well specimens are comparatively small and are doubtless 

 young. Reticulata proper is apt to have a more noticeable subsu- 

 tural shoulder on the whorls than is shown on any of these speci- 

 mens. 



Range 171 depth. — From 2,158 to 2,920 feet. 



