TROPHON. 63 



purpurascenti, margine crenato; labio interno ad canalem 

 inflexo. — On the spiral whorls the laminated varices are erect 

 and winged above the angle of the whorls. On the last 

 whorl they become more recumbent and partly disappear. 

 The shell commences its growth like a Trophon, and finishes 

 like a Murex or Purpura. 



16. spiratus, f. 44, 45, 46, Adams. — Testa breviter fusi- 

 formis; pallide fulva, nonnunquam medio anfractuum 

 castaneo-unifasciata, costis sequalibus vel insequalibus spirali- 

 bus, et varicibus plus minusve laminatis, ad angulum an- 

 fractuum subspinosis cancellata. Variat varicibus vix lami- 

 natis, liris irregularibus spirahbus intermediis. — The shells 

 represented by figures 45, 46, are characteristic of the species, 

 broadly cancellated, with smooth, square interstices. In f. 

 44, the varices are less laminar, and there are minor ridges 

 between the larger spiral ones. 



17. Quoyi, f. 24, Reeve. — Testa breviter fusiformis solida, 

 spira breviter turrita, anfractibus angulatis, late cancellatis, 

 ultimo costis spiralibus 4 crassis et longitudinalibus 16 

 cancellato; apertura subpyriformi superne angulata, labio 

 externo intus obtuse dentato. — Although not distinctly 

 laminated, the general character of T. Quoyi seems to bring 

 it near the normal form of the preceding. 



18. cretaceus, f. 9, 10, Reeve. — Testa subglobosa crassa, 

 irregulariter liris spiralibus distantibus, striis intermediis et 

 costis longitudinalibus obtusis sculpta ; spira breviuscula, 

 anfractibus angulatis, ad angulum obtuse coronatis, apertura 

 magna, versus marginem expansa, margine crenato ; canali 

 brevi, extus laminato umbilicato. — The variations to which 

 this species is liable make it difficult to identify specimens 

 in some cases, but by comparing the upper whorls the 

 varieties are more easily brought together. 



19. poltgonalis, f. 4, Reeve. — Testa subquadrato-ventri- 

 cosa, albida; spira exserta, anfractibus angulatis, longitu- 

 dinaliter undulatim costata, spiraliter distanter lirata, 

 canali mediocri, extus distanter exfoliata subumbilicata, ad 

 terminum acuminata. — More elongated and more distinctly 

 and distantly ribbed than the preceding and following 

 species. 



20. squamosus, f. 1, Broderip.— Testa subglobosa alba 



