MUREX. 27 



sulcata, duplicatim rubro lineata, inter varices plicatirn 

 unituberculata ; varicibus tumidis, medio lateraliter retrorsim 

 compressis, supra infraque fimbriato-alatis ; apertura magna 

 ovata, margine dentato et crenulato ; canali lato. — The 

 middle of each varix is compressed backwards in a peculiar 

 manner, leaving the extremities narrowly fringed. Delicate 

 red lines run in twos across the body of the shell and over 

 the varices. 



Sect. V. Three varices, plain. 



120. emakginatus, f. 95, Sowerby. — Testa solida, subtri- 

 gona, albo-fulvescens, spiraliter obtuse costata, granulata ; 

 costis inter varices medio unituberculatis, varicibus superi- 

 oribus crassis, obtuse angulatis, paulo expansis, turn abrupte 

 terrninatis ; canab clauso, obliquo ; apertura subovata, antice 

 unidentata. — The ribs form into tubercles on the back of the 

 varices and in the middle between them. The expansion of 

 the varices terminates abruptly at the commencement of the 

 canal, which is curved obliquely. 



121. abtssicola, f. 217, Crosse. — Testa ovata, trivaricosa, 

 striato-decussata, griseo-albida, fulvo fasciata, inter varices 

 plica angusta prominenti munita ; varicibus latis, foliaceis 

 compressis, nodosis, inciso-lobatis ; apertura subovata, intus 

 fusco-violacea, canali brevi, oblique subrecurvo. — Very de- 

 licately and closely striated in both dnections, incisions 

 across the flattened part of the varices give them a lobed 

 appearance. 



122. lingua-vervecina, f. 98, 99, Chemnitz. — Testa sub- 

 pyriformis subscabrosa, infra subattenuata, alba, aut nigro- 

 castanea, inter varices valide tuberculata ; varicibus crassis, 

 expansis, dorso costatis, fronte laciniatis ; canali mediocri ; 

 apertura ovata, labio externo crenulato, unidentato ; spira 

 brevi, sutura profunda. — One variety of this species is 

 darkly coloured between the varices. The tubercle between 

 the varices is large and round. 



123. Nuttalli, f. 102, 3, 4, Conrad. — Testa M. lingua- 

 vervecince similis, spira magis pyramidata, tuberculis inter- 

 stitialibus medianis, lobatis ; labio externo intus incrassato, 

 quinque-dentato. — The vervecina is pyriform, with the 

 greatest expansion of whorls and lobes above, not near the 

 middle, as in this species. 



