SOLARIUM. 231 



bilici eoarctati paucae, permagnae, in adultis albidie. Obs. Our 

 figure of the adult (f. 35) does not adequately represent the most 

 striking characteristics, the twin central belt and the broad groove 

 which succeeds it. Figure 2 is a fair representation of the young 

 of both this and the succeeding species, which greatly resemble 

 each other in that immature state which best, displays the granular 

 sculpture. 



8. granulatum (f. 1, 2), Deshayes (as of Laniard). — T. 

 valida, depresso-conica, violaceo-albida, vel pallide cacruleo-viola- 

 cea : sutura modiee canaliculata. Anfractus cingulis 4 granoso- 

 crenatis (vel potius subgranosis), ultimo in adultis, ubi hevia, 

 semper, autem eminentia, fiunt, excepto, et praeterea, filo suturali, 

 in primis subgranoso, instructi : c. superius, latiusque, maculis 

 brunneis magnis, satisque proximis, conspicue ornatum; c. caetera 

 subnequalia, et in anf. inferioribus (etiamque in basi) adultorum 

 maculis minoribus conf'ertim picta ; intervalla omnia sulcis latis 

 frqualibus profunde exarata. Carina, basis, etc., sicut in S. nobile, 

 nisi, fortasse, dentes plures et vix albidi. Obs. The only adult 

 specimen known to me did not arrive in time for delineation. 

 The broad separation of its second and third belts, which do not 

 become depressed as in nobilis, easily distinguish it from the ma- 

 ture of that earlier-known shell. The tints are likewise deeper, 

 and the spots more numerous, Lamarck's too briefly described 

 granulatum, as defined by the synonyms, should rather be the 

 previous species. 



9. Bairdii (f. 48, 49), TIanley. — T. depresso-conica, pallide 

 fulva; cingula (primo, ultimoque albo, cxceptis) maculis obscuris 

 remotis picta : sutura perangusta. Anfractus in cingula 5, 

 sulcis rati iata, divisi; 2 prima subaequalia (secundum fortasse pau- 

 lulura minus) ; tertium ambobus praecedentibus simul aequum ; 

 quartum, sulco praecessum, primo aliquantum latius; quintum, 

 sulco lato praecessum, manifeste angustum. Peripherise carina 

 secunda (sulcum satis angustum ? sequens) adeo eminens ut peri- 

 plieria acutaugularis videtur. Crena? umbilici magnae. Obs. 

 The unique example of our national museum is not mature, but 

 lias too salient characters to be passed over. 



10. pictum (f. 33, 34), Phil. — T. S. purpnralo persimilis, sed 

 pallide fulva; suturaj nivea3 et maxime canaliculata;; maculae lon- 

 ginquae; sulci radiantes rudiores; peripheriae sulcus inferior baud 

 lilnsus ; disci basalis medium album, serie macularum fulvo- 

 brunnearum versus umbilicuni (cujus crenae Candida: nonnun- 

 quam sunt sparsim maculatae) tantum ornatum. Sculptura 



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