Henderson: Shells of the Isle of Pines. 317 



5. Tudora moreletiana (Petit). 



Cyclostoma disjjinctum Morelet, Test. Nov. Ins. Cub., No. 58, 1849 (Preocc). 

 — Cyclostoma moreletianum Petit, Journal de Conchyliologie, Vol. I, 1850, 

 p. 46. — Cyclostoma moreletianum Pfeiffer, in Martini & Chemnitz, Syst. 

 Conch. Cab. (Cyclostoma) Pi. 37. figs. 27-28. 



Habitat. — Casas Mountains. 



6. Tudora pupoides (Morelet). 



Cyclostoma pupoides Morelet, Test. Nov., Vol. I, 1849, p. 23; Poey, Memorias. 

 Hist. Nat. Cuba, Vol. II, 18—, PI. 3. fig- i7- 



Habitat. — ^Caballos Mountains, Punta del Colombo. 



Until a revision of the Antillean operculates can be made, the sys- 

 tematic position of this and the preceding species must remain un- 

 certain. In both the development'of a breathing syphon at the upper 

 angle of the aperture is to be observed. This character suggests 

 Dr. Dall's genus Opisthosiphon (Proc. Mai. Soc, Vol. VI, 1905, p. 209) 

 provided that genus can be maintained. The critical character of 

 Ophistho siphon is one which to some degree is present in other opercu- 

 late genera, and to include all species possessing such a breathing 

 arrangement would seem to do violence to other characters of more 

 basic generic importance. 



7. Priotrochatella constellata (Morelet). 



Helicina constellata Morelet, Revue Zoologique, 1847, p. 144; Test. Nov., 

 p. 21. — Trochatella constellata Pfeiffer, in Martini & Chemnitz, Syst. Conch. 

 Cab (Helicinaceen), PL 9, figs. 40-41.^ — Priotrochatella constellata Wagner, in 

 Martini & Chemnitz, Syst. Conch. Cab. (Helicinaceen), 1911, p. 16. 



Habitat. — Casas Mountains. 



8. Priotrochatella stellata (Velasquez) (Poey). 



Helicina stellata Velasquez, in Jay's Catalog, 1850, p. 262, (name only). — 

 Helicina stellata Poey, Memorias Hist. Nat. Cuba, Vol. I, 1852, p. 117; PL 5. 

 figs. 18-20. — Priotrochatella stellata Wagner, Denk. Akad. Wien, Vol. LXXVII, 

 1905, p. 370, PL I, figs. 25a and b, F. 16. — Martini & Chemnitz (Hehcinaceen), 

 1911, p. 17, PL I, fig. 4 and PL 2, figs. 12-13. 



Habitat. — Caballos Mountains; Punta del Colombo. 



This and the preceding species are two of the most remarkable 

 land-shells of Cuba, both by reason of their bizarre form and their 

 apparently isolated position in the assemblage of Antillean opercu- 

 lates. Notwithstanding this, the inclusion of the genus in an oriental 

 subfamily of Helicinids, suggested by Fischer (Journ. de Conch., 

 Vol. XLIV, p. 88) and adopted by Wagner, needs careful scrutiny. 



