276 AMERICAN JOURNAL 



whole surface deeply and regularly striate transversely, forming 

 close set ribs ; columella straight ; white, left side of the longi- 

 tudinal ribs striped interruptedly with dark brown, aperture 

 light purple. 



I found a single specimen of the above associated with E. 

 variabilis ; although not apparently mature, I venture to de- 

 scribe it, being so distinct in its shape and sculpture. 



Engina parva. Pease. Plate 23, fig. 11. 



Description. — T. fusiformi-ovata, utrinque attenuata, trans- 

 versim nodoso-costata, costis 5, longitudinaliter sulcata, nodis 

 superioribus spinosis ; undique scabriuscula aut corrugata ; 

 labro valde quadridentato ; columella infra tuberculata ; alba, 

 nodulorum seriebus alternatim albis et rufescente-fuscis. 



'Dimensions. — Long. 6, diam. 3|^ mill. 



Locality. — Paumotus. 



Shell fusiformly ovate, attenuated at both ends, transversely 

 nodosely ribbed, ribs about five in number, longitudinally 

 grooved, grooves distant and shallow ; nodules or upper part of 

 last whorl produced into spines, whole surface scabrous or 

 wrinkled ; denticles on outer lip large, four in number, columella 

 with two or three small tubercles at base ; white, rows of no- 

 dules alternately white and reddish brown or black. 



The few specimens received of this species are imperfect. I 

 describe it for reason of its striking peculiarities, combining 

 the characters of Engina and Ricinula. In sculpture, general 

 form and aperture it is an Engina, while its spines and rough- 

 ened surface connect it with Ricinula. 



SiSTRUM striatum, Peasc. Plate 23, fig. 12. 



Description. — T. cylindraceo-ovata, longitudinaliter costata, 

 interdum transversim obsolete tricostata, costis subnodulosis, un- 

 dique transversim inciso-striata ; apertura angusta, longitudinis 

 dimidium testae sequante ; alba, costis longitudinalibus, fusces- 

 cente nigris, apertura violacea. 



Dimensions. — Long. 16. diam. 8 mill. 



Locality. — Insl. Kingsmill. 



Shell cylindrically ovate, longitudinally ribbed, sometimes 

 with three indistinct transverse ribs, ribs smooth, somewhat no- 

 dulous, the whole surface engraved with deep striae ; aperture 

 narrow, one half the length of the shell ; white, longitudinal 

 ribs brownish black ; aperture violet. 



