104 PYRUXA. 



dinaliter plicatis, spiraliter sulcatis depressis, angulatis, 

 ultimo magno, pyriformi, bifariam aut trifariam spinoso ad 

 suturam canaliculate, infra ad canalem exfoliata ; apertura 

 magna, pyriformi, labio interno crasse calloso, supra canali- 

 culato ; labio externo crenato, canali brevi lato emarginato. 

 — When full-grown, this shell exhibits a thickened expansion 

 of the inner lip and a canal at the suture, where there is 

 a phreuum-like connection with the outer lip. The forms 

 are variable in size, thickness and disposition of the rows of 

 thick spines, some having a double row on the ventricose and 

 a single one on the contracted part, others being compara- 

 tively wanting in those appendages. 



22. patula, f. 28, Broderip and Soiverby. — Testa magna 

 lata angulata, P. melongence similis sed turbinata, apertura 

 postice multo magis expansa, spinis uniserialibus, ad angulum 

 dispositis. — The differences between this and the last species 

 are constant, the most remarkable being that the widest part 

 of the last whorl in P. patula is at the upper part, where it is 

 broadly angular, with one row of spines. While P. melongena 

 is broadly pyriform, this species is turbinated. The inner lip 

 in this never obtains the callous thickness of the last. 



23. pyruloides, f. 5, Kay. — Testa pyriformis, cancellata, 

 subcserulea ; spira brevi, anfractibus angulatis superne 

 planatis, ad angulum carinatis. — I am unacquainted with 

 this shell, the figure of which is copied from the ' Natural 

 History ' of New York. 



24. lamellosa, f. 31. Kay. — Testa turbinata angulata 

 distanter plicata, plicis ad angulum nodosis, anfractibus 

 supra angulum complanatis, supra infraque inter angula 

 concavo-depressis. — So angularly turbinated as to form a 

 cone with very distant ribs and wide depressions between 

 them, a nodose keel being formed on the elevated angle. 



25. imbeicata, f. 4, Kay. — Testa rotundo-pyriformis, 

 superne ventricosa, striis tenuiter imbricatis sculpta, spira 

 brevi, acuta, canali elongato attenuate — Not knowing the 

 shell we give the figure from the American work. 



26. clavella, f. 29, Reeve. — Testa bulbiformis, spiraliter 

 sulcata, albida castaneo longitudinaliter strigata ; spira 

 breviuscula, anfractibus rotundis, subdepressis, ultimo superne 

 subgloboso, canali subito contracto ; apertura intus striata, 

 labio externo intus incrassato, crenulato. — Clavate, or bulbi- 

 form, with the upper part of the whorls rounded and ventri- 



