208 TURBO. 



I do not have access to Brocchi's description of this form. The 

 al)ove is a translation of Issel's note in Mai. del Mar Rosso, p. 219. 

 My figure is a copy of that of Savigny, to which Issel refers. 



I cannot learn the exact date of Brocchi's paper, "Chtalogo di una 

 serle di conchiglie raccolte presso la costa africana del golfo arabico 

 dal signor G. Forni," in which this form was described. It was 

 published in a journal entitled Bihlioteca Italiana, sometime between 

 1819 and 1823. 



T. cucuLLATUs Tenisou-Woods, 1878. Unfignred. 



Shell solidly turbinate, with large irregnlar scorched patches on 

 a dirty white ground ; whorls Ak, spirally closely keeled with small 

 round alternating keels, on the larger of which, about twelve in 

 number, there are small tubercles or small raised hooded scales ; 

 the whole shell is obliquely closely imbricately striate; suture im- 

 pressed; aperture round, entire, and with an outer margin, within 

 which there is a very clearly defined line of silvery nacre which 

 lines the throat ; base convex, lirate. Alt. 24, diam. 18 mill. 



King's Id., Bass Sts., Tasmania. 



The proper position of this Senechis is unknown to me. 



T. spENGLERiANus Gmel., 1788. PI. 42, fig. 43 ; pi. 50, fig. 65. 



Shell imperforate, large, ovate-conic, white, irregularly maculated 

 and articulated with brown ; spire conic, acute ; whorls 6-7, rounded, 

 separated by widely channelled sidures, the last whorl ventricose, en- 

 circled by about seventeen smooth ribs wdiich are as broad or broader 

 than their interstices ; aperture ovate, white within, outer lip thin, 

 base rounded ; columella with a very broad white callus which is 

 refiexed over the axis from umbilical region downward ; parietal 

 wall callous. Alt. 85, diam. 70 mill. 



West Indies ; Gulf of Mexico. 



Operculum (pi. 60, fig. 35) light brown inside, flat, with 3-4 

 whorls, rapidly increasing, with apex scarcely more than one-fourth 

 the distance across face ; outside convex, white, much elevated close 

 to the columellar edge, minutely acutely and sparsely granose, spiral, 

 the beginning of the spiral more roughly asperate, partly covered by 

 a rude callus ; outer edge marked by several concentric impressed 

 lines. 



