74 msDS. 



24. spectrum, f. 35, Reeve. — Testa albida tenuiuscula, 

 spira elevata, anfractibus 9, superioribus prominentibus, ro- 

 tundis distanter liratis,profunde plicatis, ultimo evanide lirato, 

 angulato, ad angulum acute carinato et tuberculato. — The 

 upper whorls are rounded, prominent, with thick rounded 

 plaits ; but the last whorl is angular, with one prominent 

 keel, the rest having almost disappeared. 



25. dilectus, f. 36, A. Adams. — Testa tenuis, minutissime 

 scabra, f»lba longitudinaliter distanter rufo strigata, distanter 

 lirata, inter liras tenuissime striata ; spira breviuscula, an- 

 fractibus superne vix subangulatis ad suturam spiraliter 

 filosis versus apicem costata ; apertura angustiuscula, canali 

 declivi, tortuo. — A white shell with a few longitudinal 

 stripes. The sculpture is fine and delicate, consisting of 

 very finely scabrous lines between distant spiral ribs. 



26. acus, f. 39, Adams and Reeve. — Testa angustissima, 

 aureo-fusca, longitudinaliter plicata, spiraliter subdistanter 

 lirata ;. spira acuminata, anfractibus productis, medio angu- 

 latis, canali spiram longitrudine asquante. — A remarkably 

 narrow shell with no other striking characteristics. 



27. Nicobaricus, f. 21,171, Chemnitz. — Testa rugosa fusco 

 cornea, flammulis subangulatis, nigrescentibus strigata ; 

 spiraliter liris rudis, crassis, subrotundis, interstitiis crenatis 

 cincta ; spira elevata, anfractibus acute angulatis et tuber- 

 culatis, apertura crenata, canali lato, distanter spiraliter 

 costato. — One of the most rugose species of the group, having 

 prominent rough ridges. See note on Plate-description XIV. 



27*. laticostatus, f. 60, 172, Reeve. — Testa F. Nicobarico 

 similis sed pallidior, laevior, costis spiraUbus magis planulatis, 

 anfractibus obtuse angulatis. — Broadness of growth is men- 

 tioned as the chief distinction between this species and F. 

 Nicobaricus, but we have seen specimens in which this 

 condition is reversed. The present is, however, a smoother 

 shell of different colour and texture. See note on Plate- 

 description XIV. 



29. marmoratus, f. 20, 158?, 163, Philippi. — Testa brevius- 

 cula subrugosa, fulva, strigis maculisque fusco-marmorata, 

 spiraliter rude costata ; spira subelevata, anfractibus obtuse 

 angulatis, longitudinaliter costatis, ad angulum tuberculatis ; 

 cauda breviuscula. — After comparing a great number, the 

 writer decides to separate the roughly keeled and the smooth 

 shell, f. 159, under the two following names. 



