HELIX-PAPUINA. 31 



231 TAPPARONE CANEFRI Ann. Mus. Civ. Genov. xix. p. 135, t. 

 3, f. 7. (Figure copied from Lesson.) 



This species is well described and figured by Lesson in 1830. It 

 has not been seen by subsequent writers. The deep-chestnut shell is 

 begirt with a yellow peripheral line. See below. 



Var. EXSULTANS Tapparone-Canefri. PI. 3, figs. 48, 49, 50, 58. 



Imperforate, trochiform, rather solid, obliquely finely striatulate, 

 chestnut or cinnamon colored, with a carinal yellowish band and an 

 infra-sutural chestnut band, ascending the spire. Spire concave-conic, 

 apex obtuse ; whorls 7, the upper ones convex, the rest flat, the last 

 acutely carinated, not descending in front ; base but little convex, 

 deep chestnut. Aperture very oblique, depressed subrhomboidal ; 

 peristome rather thin, the upper margin expanded, flexuous at the 

 carina; basal margin subdilated, reflexed. Alt. 20, greater diani. 

 23, lesser 19 mill. (P/r.) 



Dorey Hum, Northern New Guinea. 



H. ferussaci PFR., Novit. Conch., p. 212, t. 56, f. 7-9 ; Mouogr. 

 Hel. Viv. v, p. 272. Geotrochus ferussaci WALLACE, P. Z. S. 1865, 

 p. 412. H. exsultans TAP. CAN., Ann. Mus. Civ. Genov. xix, p. 135, 

 t. 3, f. 8 (fig. copied from Pfr.) ; Ann. Mus. Civ. Genov. xxiv, p. 

 137, 1887. 



The apex is submamillar, not acute. It may be a species distinct 

 from H. ferussaci, but it is so closely allied that specimens of the 

 latter should be compared. 



H. PYTHONISSA Tapparone Canefri. PI. 3, fig. 57. 



Shell covered perforate, elevated trochiform, under a lens seen to be 

 minutely, irregularly obliquely striated and having obsolete spiral 

 stride ; whitish-corneous ; apex rather acute, reddish-corneous. 

 Whorls 7, a little convex at the sutures, sub-concave in the middle, 

 separated by sharply margined sutures, last whorl not descending in 

 front, acutely compressedly carinated below the middle, the base 

 nearly flat. Aperture oblique, triangular-lunate, produced into a 

 short rostrum at the keel ; peristome narrow, thin, upper margin 

 acute, sinuous, arched forward, basal margin arcuate-reflexed ; colu- 

 mella dilated toward its insertion, having a squarish tooth within. 



Alt. 22, greater diam. 25, lesser 19 mill. (T. C.) 



Is. of Sorong, near New Guinea. 



H. pythonissa T. C., Ann. Mus. Civ. Genov. xix, p. 136, t. 3, f. 9. 



