OF CONCHOLOGY. 297 



whorl ; Avhorls 5 — 6, convexly rounded, suture deeply impressed ; 

 aperture small, oval. 



RissoA FLAMMEA, Pease. Plato 24, fig. 33. 



Description. — T. oblonga, subfusiformi, crassa, transversim 

 tenui sulcata, anfr. planis ; sutura valde impressa ; spira acuta ; 

 columella arcuata ; apertura oblongo-ovata, albida, longitudina- 

 liter strigis cinereis picta, sulcis pallide fusca interruptim line- 

 atis. 



Dimensions. — Long. 3, diam. 3^ mill. 



Locality. — Insl. Carolinse. 



Shell oblong, subfusiform, solid, transversely finely grooved • 

 whorls plane, suture well impressed ; spire sharp ; columella 

 arched ; aperture oblong-ovate ; whitish, painted with broad 

 longitudinally ashy grey stripes, running into each other ; grooves 

 lined interruptedly with light brown. 



The above two minute species of Rissoa are the first discovered 

 on the Pacific Islands. 



They lately made their appearance from the extreme west. 



