NAYTIA, ALECTKION. 27 



Mr. Marrat considers his .V. nodiilonfi. probably a deep-water 

 form of A', granifera: it is not figured. N. ohlit/na. Ilombr. 

 and Jacq. (fig. 40), N. obliqua, Pease (unfigured),and N. 

 Desh. (tig. 41) are synonyms. 



us Naytia 11. and A. Adams. 

 N. GLABUATA, 8owl>. PI. 8. figs. 42. 4. % >. 



Light fawn-color, highly polished, with sometimes, traces of 



ribs ut the sutures. Leiiirtli, 'S-MJ inch. 



IF. CoaM of Afrifi. 



Described doubtfully as a Strombit*. N. oUiqna, Kiener (iig. 

 ), is ji synonym. 



(JRANA, Lam. PL 8. fig. 44. 

 Yellowish white, brown spotted at the sutures, mul with inter- 



rupted revolving brown lines. Length, *4 inch. 



Mediterro uean ^c-<i . 



li^iMiu^ Alectrion, Monrf. 

 N. (jLA\s, Linn. PI. 8. figs. 45-49, 52-54. 



Yellowish white, clouded with yellowish brown, encircled with 

 equidistant, narrow, chestnut-colored lines. 



Length, l'5-2 inches. 



Japan, Philippines, Australia. 



This is the largest species in the genus : it cither varies much, 

 however, in size and proportion, or else the following forms 

 should be considered distinct. As they all .possess the revolv- 

 ing dark-colored lines, I prefer to consider them as simple dwarf 

 varieties. 



Var. LATA. Tryon. Fig. 4C>. 



Broadly ovate, approaching A r . mutabilix, L. in form. 



Length, '2'2 mill. 



Three specimens, without locality, in the Museum of the 

 Philadelphia Academy. 



Var. ELKGAXS. Kiener. Figs. 47- Hi. 



AVhorls inconspicuously shouldered beneath the sutures. 

 Besides the revolving brown lines the surface is clouded or 

 striped longitudinally, and revolving series of quadrangular 

 spots frequently occur upon the shoulder and middle of the 



-horl. Length, 22-27 mill. 



tio. 



