LATIAXIS. 3 



superiorem spiris paiicis ensiformibus productis et infra 

 medium minoribus ornatis, apertura brevi, margine qiiadri- 

 spinoso ; canalis margine exfoliato, axe subanguste umbilicata ; 

 apertm-a intiis lirata. — Tlie whorls are ornamented at their 

 upper angle by produced curved flattened and notched spine- 

 like processes arising from distant varices. 



8. EXFOLIATUS, f. 15, Soiverby. — Testa alba, quam L. dia- 

 dema angustior, spira hand tantum exserta, spinis ad an- 

 gulum anfractuum minoribus, axe hand umbilicata, canali 

 angusto ; apertura intus Isevi. — Having much the general 

 appearance of L. diadema, but the produced flattened spines 

 at the angle of the whorls are not nearly so large. In the 

 specimen figured the one at the angle of the mouth is 

 bilobed. The great difference, however, is in the narrow- 

 ness of the varicose canal and the absence of an umbilicus. 

 The name pagodus applied by A. Adams to this shell was 

 preoccupied; see sp. 10. 



9. FEUTicosus, f. 8, Gould. — Testa alba tenuis breviter 

 subovata ; spira breviuscula anfractibus angulatis, supra 

 angulum declivibus, ad angulum et medio spinis tuberosis 

 ornatis ; apertura trigona, margine lobato, umbilico parvo, 

 margine trifariam tuberculato. — The umbilicus in this 

 curious little species is narrow but not wanting, as in the 

 preceding species ; it is bordered by three rows of small 

 tubercles. The spines are not compressed but tubular. 



10. PAGODUS, f. 2, 3, Jonas, — Testa oblique quadrata pallide 

 fulva, vel subrosea, liris serratis spiralibus sculpta, ad an- 

 gulum anfractuum carina squamifera undulata marginata; 

 anfractibus subacute angulatis, supra angulum declivibus, 

 ultimo infra medium contracto, versus canalem varice ex- 

 foliato marginato subanguste umbilicato, canali spiraliter 

 subtortuo. — Angularly fusiform, with prominently angular 

 whorls, bordered at the angle with an undulated and serrated 

 keel and all over with finely serrated close ridges. 



11. TORTiLis, f. 1, A. Adams. — Testa L. pagodo similis, 

 sed multo magis rude sculpta, canali breviori. — Translucently 

 white, with the serrated ridges much coarser and fewer than 

 in the last. The lower part of the last whorl is less ventricose 

 and more angular. 



12. GYRATUS, f. 12, Hinds. — Testa parva, L. pagodo 

 similis sed minutissime sculpta, carina serrata, ad angulum 



