164 



Hab. In Sinu Panamensi ; legit T. Bridges. Sp. un. in Mus. 

 Cuming. 



Has the general aspect of Mangelia rigida, var. fuscoligata ; and 

 also resembles D. rava, Hinds. 



16. Drillia punctatostriata, n. s. D. testą intense pur- 

 pureo-fusca, gracili, spira acuminata, marginibus excurvatis ; 

 anfr. x. satis rotundatis, suturis haud impressis ; lirulis spi- 

 ralibus acutis, distantibus, ąuarum iii.-v. in spira monstrantur, 

 supra costis radiantibus inconspicuis circiter xx. obliąuis, no- 

 dosis ; juxta suturam carina haud extante ; area sinus lineis 

 incrementi costis convenientibus vix decussata ; apertura elon- 

 gata, intus haud denticulata, canali minimo ; labro margine 

 acuto, haud serrato, ad dorsum tumente ; sinu antico minore, 

 postico rotundato, profundo, faucibus coarctatis ; Idbio haud 

 calloso ; totą superficie sub lente minutissime et confertim 

 punctatostriata. 



Loiig. '/S, long. spir. '4, lat. "26, div. 27°. 



Hab. In Sinu Panamensi ; legit T. Bridges. Sp. un. in Mus. 

 Cuming. 



17. ? Pleurotoma GRACiLLiMA, n. S. 1 P. tcsta gracillima, 

 pallide castunea, spira acuta, elevata, marginibus rectis ; anfr. 

 xii. rotundatis, sutura impressa ; costibus radiantibus sub- 

 declivibus xviii., ad jugum acutis, interstitiis parvis ; lirulis 

 spiralibus acutis, ąuarum iii. sive iv. in spiram monstrantur, ad 

 intersectiones nodulosis ; carina infrasuturali haud extante ; 

 area sinus latiore, sublcevi ; totą superficie minutissime spi- 

 raliter striulata, in spira radiatim corrugulata ; apertura 

 ovali, canali subelongato ; labro margine acuto, vix serrato, ad 

 dorsum valde calloso; sinu antico parvo, postico rotundato, 

 aperto, suturce contiguo, haud attingente ; callositate parietali 

 vix monstrante . 



Long. -83, long. spir. '49, lat. -24, div. 20°. 



Hab. In Sinu Panamensi ; legit T. Bridges. Sp. unicum in Mua. 

 Cuming. 



Has many of the characters of Drillia and Defrancia ; but the 

 canal appears long enough to give it a place among the true Pleu- 

 rotomce. 



(7 (^ 18. ScALARiA REGULARis, U. S. jS. tcstū parva, turrita, alba ; 

 anfr. ix. parum attingentihus ; costis x.-xii. validioribus, ex- 

 tantibus, lineis subspiralibus apicem versus contin^is ; striulis 

 spiralibus subobsoletis ; umbilico nulio. 

 Long. -27, long. spir. -19, lat. -13, div. 32°. 

 Hab. In Sinu Panamensi ; legit T. Bridges. Sp. tria in Mus. 

 Cuming. 



The ribs are stronger, more projecting, and the spirai sculpture 

 fainter than in S. Mindorensis. 



O n 19. ScALARiA TIARA, n. S. S. tcstū obcsa, IčBvi, albida; anfr. 

 vii. parum attingentibus, rapide augentihus ; costis xii. acutis, 



