98 HARPA. 



Tlie shell called var. Gruneri, Maltz., is not essentially 

 different. 



H. VENTRICOSA, Lam. PI. 40, figs. 59, 60. 



Shell with about twelve to fifteen rather broadly-flattened ribs 

 which are crossed by a number of rather broad light-chestnut 

 revolving bands, separated by narrow white bands; interstices 

 of the ribs Wide, marked with chestnut and white arranged in 

 semicircles, or festooned ; aperture pinkish or yellowish white 

 within, showing the exterior painting ; columetta blotched with 

 chocolate. Length, 2-5-3-5 inches. 



Indian Ocean, Zanzibar, Mauritius, Philippines, Viti Islands. 



H. CONOIDALIS, Lam. PI. 40, figs. 61-64. 



Spire more elevated and shoulder of body-whorl more sloping 

 than in the preceding species ; the intercostal paint ing is simi- 

 larly festooned, but usually not so distinctly, the revolving 

 bands on the ribs are defined either on the shoulder only, or 

 occasionally elsewhere, or throughout by dark chocolate borders. 



Length, 2-5-3-5 inches. 



ImUxn Ocf.tni., r/u!/p/>i)ic*, Mnni'itius. 



Dr. Sutor, as well as Sowerby and Reeve have attempted to 

 distinguish other species here, by characters that are poor 

 enough even in their figures, but which possess no claims what- 

 ever when a large suite of specimens are examined ; it is even 

 dillicult in some cases to separate this shell from //. ri'Hfriroxd. 

 In //. (irln-uldris. Lam. (fig. (J2>, the dark bands are well defined 

 throughout, in //. li<j<ihi, Menke ~- itdhlimii. Mart. (fig. (51), they 

 are less fre(|uent, and in the typical //. c<>n<>i<l<il i*. Lam. (fig. (>:). 

 they are usually only occasionally visible on or towards the 

 shoulder. The latte; variety approaches near to //. /v////-/ro.sv/. 

 //. xlriahila, A. Ad. (fig. (54 >, is a juvenile shell. 



II. CRENATA, Swains. I'l. 40, fig. f)f). 



Ribs distant , tliin, low, not reflected, interstices festooned with 

 light yellowish brown and white. Length, L ; .'J inches. 



Uesides t.lie narrow ribs, the coloring is much less vivid than 

 in the preceding oriental species. 



