GONIOBASIS. 143 



Others, which are transversely striate ■with rugose granulations. 

 When perfectly granulate there are three or four rows of beautiful 

 small nodes surrounding the whorls. There are usually seven bands 

 well marked inside, but obscure on the exterior. A single specimen 

 is entirely brownish-purple inside. It is rarely without color ; usu- 

 ally there is a small yellowish spot at the base of the columella out- 

 side. Those sent by Mr. White are all olive-green and without an iron 

 deposit. Those from Bishop Elliott were all covered with the black 

 oxide of iron, which on being removed exhibit a rubiginose color, and 

 do not show much color in the bands. In outline it is near to Melania 

 (Goiiiobasis) bellula (nobis), but is more inflated and is striate and 

 granose. The aperture is about one-half the length of the shell. 

 — Lea. 



This species is a good one but has unfortunately not been 

 properly distinguished from ccelatura, Conrad. 



Mr. Anthony's description of decorata applies to the juve- 

 nile form only, but his name has priority and must be adopted. 

 Mr. Anthony has misunderstood the range of characters of the 

 species, and some of the specimens labelled decorata by him 

 are the young of ccdatura. Mr. Lea's type figure of Tryoni- 

 ana, which is here copied, exhibits the mature form, but he has 

 made his description to cover both this roughly granose species 

 and the smoother ccelatura. Indeed, some of the shells which 

 he has presented to me are really ccelatura. 



Mr. Lea's granata is a young shell and is in all respects 

 identical with Mr. Anthonj-'s species. The original figure is 

 copied. Luckily in the present instance a number of lots of 

 specimens, numbering several hundred individuals in all, have 

 enal)led me to make the above decisions with confidence. 



There is a wide range of variation in color, form, texture 

 and ornamentation in this species. 



5. G. caelatura, Coxkad. 



^^elania ccelatura, CONRAD, Proc. Acad. Kat. Sei., iv, p. 154, Feb., IStO. Jour. 



Af-ad. Xat. Sei., i, pt. -4, p. 278. t. 38, f. 3, Jan., 1850. Binney, Check List, No. 58. 



Brot, I.ist, p. 3i. llEEVE, Mono;,'. Melania, sp. 245. 

 Goniobasis Tryoniana, Lea, Description in part. 



Description. — Ovate-ol)long, turreted; volutions six, with longitu- 

 diual ribs and unequal prominent revolving lines, subuodulous where 



