ii6 BUI.I.ETIN 39 a88 



The figured specimen from Gatun has the following meas- 

 urements: 



Length 29, diameter 10.5, last whorl 22, spire 12.5, aper- 

 ture 16 mm. 

 Gatun Stage: Gatun and Mt. Hope, C. Z. 



I^etuia Harrisi, n. sp, Plate 10, figure 10 



Shell solid and more coarsely sculptured then Metula Gabbi, 

 and with a longer and broaded spire and shorter aperture; whorl 

 6 plus, (apex lost); sculpture of spiral cords and finer, curved 

 longitudinal ribs; the spire whorls with 8 spiral cords which are 

 finest next to the lower suture, become progressively stronger 

 above; on the last whorl and canal there are about 25 spirals; 

 the spirals are slightly nodulated by the ribs of which there are 

 about 40 on the last whorl; certain of the spirals on the middle of 

 the whorl are double; aperture ovate-elliptical with a strongly 

 thickened outer lip, internally with about 19 short lirse; inner 

 lip smooth; canal short and twisted. 



Length 26.5, diameter 11, last whorl 19.5, aperture 13.5, 

 spire 14 mm. * 



A solid and more coarsely sculptured species than the Metula 

 Gabbi. The spire is broad and porportionately longer, due to the 

 shorter aperture. In Gabbi the spirals are of nearly equal 

 strength over most of the shell surface with exception of those 

 immediately bordering the upper suture. In the present species 

 the spirals are finer below and progressively become stronger post- 

 eriorly. 



The type specimen was collected in the lower Gatun sand- 

 stones of Coco Plum, Panana. 



Gatun Stage: Coco Plum, Bocas del Toro, Panama. 



Metula Harrisi var. limonensis, n. sp. Plate 10, figures 5, 6 



Shell more slender; a narrow and longer aperture more 

 nearly the length of the spire; sculpture coarsely reticulate. 



