ENGINA. 195 



The ground of coloring, according to Reeve's figure, is dark, 

 with a single white band. The figure is evidently magnified, but 

 no dimensions are indicated. I think it will prove synonymous 

 with E. concinna, Reeve. 



E. PARVA, Pease. PL 63, fig. 55. 



White, encircled by chocolate or black lines upon alternate 

 rows of nodules and sometimes interrupted by the interstices ; 

 nodules frequently prominently sharp-pointed. Length, 6 mill. 



Paumotus Is. 

 E. NODICOSTATA, Pease. PL 63, figs. 56, 51. 



Two of the revolving series of tubercles are more prominent 

 than the others at the crossings of the longitudinal ribs, so that 

 the body-whorl appears somewhat biangulated ; chestnut to 

 chocolate-color in the interstices, the nodules white. 



Length, 6 '5-9 mill. 



Paumotus Is. (Pease); Viti Is. (Garrett). 



E. uariabilis, Pease (fig. 57), is certainly a synonym, and I am 

 almost persuaded of the identity of the form described by Pease 

 from a single specimen as E. striata. 



E. STRIATA, Pease. PL 63, fig. 58. 



Shell somewhat angular in the middle, obsoletely longitudi- 

 nally ribbed, encircled by two prominent nodose ribs, somewhat 

 compressed, the whole surface deeply and regularly striate 

 transversely, forming close-set ribs ; columella straight ; white, 

 left side of the longitudinal ribs striped interruptedly with dark 

 brown, aperture light purple. Length, 8 mill. 



Paumotu*. 

 E. TUBERCULOSA, Pease. PL 63, fig. 60. 



Obsoletely longitudinally ribbed, decussated into tubercles by 

 strong revolving grooves ; black, with a median white band. 



Length, 7-9 mill. 



Baker Island. 



The figure is from one of several specimens received from Mr. 

 Pease. 



E. PYROSTOMA, Sowb. Panama and Galapagos Is. 



E. MAURA, Sowb. Panama and Galapagos. 



E. LIVIDA, Sowb. Panama. 



The above were described, but not figured, fifty years ago, and 

 have escaped subsequent monographers ; they are unknown to me. 



