165 



valde extantibus, infra suturatn parum alutis, attingentihus, 

 lineis rectis ad apicem continuis ; umbilico nulio. 

 Long. -27, long. spir. -16, lat. -16, div. 48°. 

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

 Cuming. 



Distinguished from S. obesa, Sow., by the small size of the cor- 

 responding whorls, slightly winged shoulders, and want of įimbilicus. 



20. ScALARiA SUBNODOSA, U. S. S. testū turritū, alba, gracili, 

 leevi, anfr. xii. haud separatis ; costis xiv.-xvi. plemmąue 

 acutis, huc et illuc latis, subdeclivibus, superne vix alatis ; um- 

 bilico nulio. 



Long. 1-4, long. spir. 1-06, lat. '5, div. 23°. 

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

 Cuming. 



21. ScALARiA CuMiNGii, n. S. S. testū "S. mitrBeformi" si- /b tU T< 

 mili, sed paullum graciliore ; anfr. x. quarum iii. primi Iceves ; 



costis paucioribus, viii.-ix., minus coronatis, haud acutissimis, 

 haud rejlexis, striulis incrementi minutissime sculptis ; anfr. 

 valde separatis. 

 Long, -35, long. spir. -25, lat. -14, div. 30°. 

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

 Cuming. 



The lines of growth ou the varices show that the coronations were 

 never so sharp and elevated as in S. mitrceformis. 



22. ScALARiA HiNDsii, n. s. 5. testą "S. Cumingii" simili, Bh-T^ 

 sedmagis elongata, majore, anfr. x. haud profunde separatis ; 

 varicibus acutis viii., acutius coronatis, lineis regularibus, ad 

 marginėm alteram spirce parallelis, ascendentibus. 



Long. 1-04, long. spir. 79, lat. -4, div. 25°. 

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

 Cuming*. 



23. Natica EXCAyATA, n. s. N. testą " N. Broderipiause " si- 

 miii ; sed callositate parietali maxime elongata ; regione spi- 

 rah umbilicari valde excavata ; albida, rufo-castanea lineis 

 irregularibus radiantibus penicillata ; striulis radiantibus cre- 

 brioribus. 



Long. 1-45, long. spir. -3, lat. 1-5, div. 130°. 



Hab. In Sinu Panamensi ; legit T. Bridges. 2 sp. in Mus. 

 Cuming.— S.W. Mexico, P. P. C. 



This shell resembles N. lineata (Philippines) in colouring ; but 

 that shell is smooth, while the Panama shell has distinct, though not 

 deep, radiatmg furrows, ending in a circum-umbilical line. 



24. ? Triton crebristriatus, n. s. ? T. testą "T. picto" 



* The above species are published ^ith doubt, as Scalaria are seldora seen in 

 sufficient uumbers to ascertain tbe limits of specific variation Species described 

 from one or two specimens mušt always be regardert simplv as " provisionallv 



