76 HELIX-ACAVUS. 



weather in the nooks and crannies of the giant fig trees. The rub- 

 bish among the buttressed roots of the great scrub trees is capital 

 hunting grounds for a naturalist, but too often he finds himself 

 forestalled by that enthusiastic conchologist and able collector, the 

 scrub turkey. 



H. MACONELLI Reeve. PL 19, fig. 26. 



Shell imperforate, lengthened-ovoid, bulimiform, thin but strong; 

 surface shining, microscopically spirally striate. Color light yellow, 

 covered with fine close longitudinal broken lines of chestnut and en- 

 circled by a number of girdles formed of dark chestnut or chocolate 

 spots. Whorls 4, the last very large ; spire short, obtuse. Aper- 

 ture ovoid, angled above, flesh-colored inside ; peristome thin, 

 simple ; columella sinuous, reflexed and appressed over the umbilical 

 region. Alt. 75, diam. 58 mill. 



Brisbane, Queensland, Australia. 



Bulimus Maconelli REEVE, Proc. Zool. Soc. Lond. 1851, p. 198, t. 

 12. Helix maconelli Rve., PFR., Monogr. iii, p. 380. Cox, Monogr. 

 Austr. Land. Sh., p. 6, t. 3, f. 5. H. (Pandci) maconelli Rve., 

 HEDLEY, List Queensl. Land Shells, in Proc. Roy. Soc. Queensland, 

 p. 63, 1888. 



Just like H. falconeri in color and sculpture, but narrower and 

 imperforate. 



Section III. ACAVUS Montfort, 1810. 



Acavus MONTF. Couch. Systematique, ii, p. 234 ; 1810. Type, H. 

 hcemastoma. Acavus Montf., of ALBERS, BECK, MORCH, PFEIFFER, 

 and authors generally. Otala (in part) SCHUMACHER, Essai, p. 191, 

 1817. Oligospira ANCEY, in The Couchologists' Exchange ii, p. 22, 

 1887. Types H. waltoni and H. skinner L 



The section Acavus comprises Ceylonese helices of large size and 

 superb painting. The capacious shell is either globose-conical or 

 depressed in contour ; pink predominates in the color-scheme of the 

 outer surface, combined with chestnut and white ; and the broad 

 polished lip and columella are intensely black, vivid red, or of a 

 lilac tint. 



The luster less surface is seen under a strong lens to be very min- 

 utely cut by oblique, decussating scratches ; in waltoni and skinneri 

 it is granulated. The epidermis is very thin, yellowish ; in most 

 species it is deciduous, being wholly absent. Such shells are covered 



