CUBAN ANNUDARIIDAE TORRE AND BARTSCH 249 



postiiuclear whorls consisting of slender, sublamellar riblets, which 

 are rendered wavy by the low rounded spiral cords. There is a breath- 

 ing pore, which is provided with a siphon externally on the parietal 

 wall near the posterior angle of the aperture a little within the edge of 

 the peristome. Operculum typically tudorid. 



Type: Tudora {Eutudorops) torquata ([Gutierrez] Poey). 



TUDORA (EUTUDOROPS) TORQUATA ([Gutierrez] Poey) 



Plate 22, Figures 8, 9 



1858. Cyclostoma torquata [Gutierrez] Poey, Meinorias sobre la liistoria natural 



de la isla de Cuba, vol. 2, p. 34, pi. 4, fig. 2. 

 1858. Ctenopoma torquata Pfeiffer, Monographia pneumonopomorum viven- 



tium, Suppl. 1, p. 105. 

 1920. Eutudora (Eutudorops) torquata Henderson and Bartsch, Proc. U. S. Nat. 



Mus., vol. 58, p. 79. 



Shell moderately large, elongate-conic, flesh colored or pale j^ellow. 

 Nuclear whorls 2, the first smooth, the second showing the ingression 

 of the axial ribs, which here become quite strongly developed. Post- 

 nuclear whorls inflated, strongly rounded, marked by retractively 

 slanting axial riblets, which vary much in strength in different indi- 

 viduals, and which usually develop into rather conspicuous auricles 

 at the summit and into strong scallops at the periphery; where these 

 two elements meet the ribs frequently become fused. The spiral 

 sculpture also varies much in strength, ranging from obsolete to 

 strong, rounded cords. The number of spiral threads between sum- 

 mit and suture may vary from 4 to 8; these spiral threads render the 

 riblets wavy or faintly scalloped. Suture strongly constricted. 

 Periphery well rounded. Base moderately long, well rounded, 

 marked by the contmuation of the axial riblets and by spu'al threads, 

 which also vary in number and strength. The reflected outer peri- 

 stome of the inner lip usually completely covers the narrow umbilicus, 

 or there may be a narrow chink left uncovered. Aperture subcircular; 

 peristome double, the inner slightly exserted; the outer narrowly ex- 

 panded on the outer and basal lip and broadly expanded on the inner 

 ]ip and parietal wall, to cover the umbilicus. There is a breathing 

 pore at the posterior angle, which continues on the outside as a heavily 

 wrinkled, curved siphon. Operculum typical of Tudora. 



The specimen figured, U.S.N.AI. No. 493418, a cotype, was received 

 by Dr. de la Torre from Gutierrez, who received it from El Lechuzo, 

 which is now called Rodas. This is about 10 miles north of the Bay 

 of Cienfuegos. It has 3.5 whorls remainmg and measures: Length, 

 10.7 mm.; greater diameter, 6.0 mm.; lesser diameter, 5.5 mm. 



We have also figured a specimen, U.S.N.M. No. 493419, from San 

 Isidro north of Cienfuegos, in order to show the tremendous variation 

 in size and sculpture through which the species ranges. 



