214 GUPPY : MOLLUSCA OF TRINIDAD. 



from New Granada. Funck collected in the latter country and 

 not in the Antilles. The Granada shell is d {Tornatellinci) 

 lamellata as given in my paper on the shells of that island 

 ('Ann. & Mag. Nat. Hist./ June, 1868, p. 43)). 



7. Zonites guildingl Bland. 

 Stenopus guildingi Bland, 'Ann. Lye. Nat. Hist. New York,' 



vol. viii., p. 157. 

 Zonites guildingi Crosse, I.e., p. 38, No. 6. 



A very thin amber-colored umbilicate depressed-orbiculate 

 shell, with a lunate aperture. Height 4J mill., diameter 9 mill. 



Apart from the undesirability of retaining the name 

 Stenopus for a genus of mollusca, there are objections to the 

 original constitution of the genus for such dissimilar shells as 

 lividus and cruentati/s. The import of the designation was mis- 

 conceived by Woodward, who regarded the name as equivalent 

 to Nanina. But his authority, second to none as regards 

 marine mollusca, does not stand so high in reference to land 

 shells. We have scarcely yet, indeed, arrived at a satisfactory 

 solution of the difficulties which beset the determination of the 

 limits of the genera Zonites, Nyalina, Alacrocyciis, etc. 



The figures given by D'Orbigny of his Helix nitensoides 

 ('Moll. Cuba,' pi. X., f. 9 — 12) bear much likeness to our shell. 

 In the text (vol. i., p. 161) that author notices the resemblance 

 to H. cellaria and H. nitens. I should not be surprised if 

 D'Orbigny's shell (of which the habitat is Cuba) and ours were 

 to prove specifically identical. 



8. Zonites implicans Guppy. 

 'Amer. Journ. Conch.,' 1870, p. 307, pi. xvii., f. 2, 

 Crosse, I.e., p. 39, No. 7. 



A minute widely-umbilicate discoidal shell, with four 

 depressed whorls. Height \ mill., breadth 2 mill. 



9. Zonites urnbratilis Guppy. 

 ' Amer, Journ. Conch,' 1870, p. 307, pi. xvii., f 3. 

 Crosse, I.e., p. 39. No. 8. 



J.C, vii.. July 189s. 



