16 OLIVA. 



rather be compared with 0. elegans, from which it differs in 

 little but colour ? — Ed. 



74. infrenata (f. 161), Marvat. — Quam 0. elegans magis 

 inflata, incrassata; spira brevissima, tumida, callo postice 

 producto, colore pallido, strigis undulatis pallidas fasciisque 

 duabus castaneo maculatis picto, columellas callo antico 

 albido. — Somewhat resembling 0. elegans and 0. inflata, 

 but the spire is much like that of 0. maura. 



75. angdstata (f. 182, 183), Marrat. — Oblongo-subcylin- 

 dracea, vix inflata, pallide fulva, lineis pallide fuscis longi- 

 tudinalibus, punctis fasciisque duabus maculatis notata; 

 spira, brevi, turbinata ; balteo dense lineato ; columella 

 omnino tenuiter et dense plicata, plicis calli antici 4 latis 

 moderate elevatis; apertura intus alba; labio tenui, intus 

 fusco marginato. 



76. gdttola (f. 165-168), Martini. — Ovato-cylindracea, 

 pallide fulva, maculis olivaceis bifasciata, lineis punctatis 

 aurantiis longitudinalibus griseo marginatis notata ; spira 

 brevi, anfractibus rotuudatis ; columella obsolete plicata, 

 plicis calli antici fulvis vel aurantiis ; apertura intus albida ; 

 labio crasso, extus abraso. 



77. evania (f. 162, 3), Duclos. — Quam 0. guttula angus- 

 tior, colore pallido, vivide et subdistanter notata. — Probably 

 a variety of 0. guttula. I have not been able to obtain 

 specimens identical with Duclos' figures. 



78. Keenii (p. 164), Ma.rrat. — 0. Labradorensi similis. 

 (Ed.) Nearly allied to gland iformi, but is narrower, has the 

 folds less forcibly developed, and the plaits more tumid. — 

 Marrat. 



79. viridescens (p. 1 69-1 72), Lamk. — 0. guttula; similis, 

 plerumque lineis densis reticulata; columella antice vivide 

 rubro-aurantia. — Its orange-red columella and plaits are 

 characteristic. Nearly all the dark forms have numerous 

 pale triangles scattered over the body whorl. The light 

 varieties have wavy longitudinal lines of a brown and yellow 

 colour, somewhat approaching the shells belonging to 0. 

 guttula. The small forms of the 0. sericea are very closely 

 allied to this species (Marr.). Fig. 177 of this species, and 



