134 MITRELLA. 



irregular white spots at the suture, and a similar one on the 

 periphery. Length, 12 mill. 



Habitat unknown. 



C. ANGELTA/DUCIOS. PL 50, fig. 31. 



"X 



Shell slender, with produced spire, striate at base, otherwise 

 smooth ; outer lip with an external varix, numerously toothed 



within; orange-red, including the interior. 



Habitat unknown. 



No size-marks are given on the plate of Chenu in which this 

 species is figured, but there can be no doubt that the figure (as 

 well as those of the other species) is considerably magnified. 



C. ORPHIA, Duclos. PI. 50, figs. 32, 33. 



Shell chocolate, with large irregular maculations and smaller 

 spots of white, the latter chiefly at the base of the body-whorl. 



Length, 7 mill. 



Habitat unknown. 



This, as well as the several preceding and succeeding species, 

 figured but not described by Duclos, have not been identified by 

 subsequent monographers, and remain unknown. G. ilaira, 

 Duclos (fig. 33), is perhaps only an older specimen, having one 

 more whorl, measuring 9 mill., and not differing essentially in 

 either form or coloring. 



C. PSILLA, Duclos. PL 50, figs. 34-36. 



Bright chestnut, covered by numerous small white spots, with 

 a band at the suture and another on the periphery composed of 



larger square spots. Length, 6 mill. 



Habitat unknown. 



Yar. PHILODICIA, Duclos. PL 50, figs. 35, 36. 



I suppose that this is a mere color-variety. The ground-color 

 is lighter, the spots are present, the sutural band is absent, and 

 there is only a slight indication of a light band on the periphery; 

 in one of the specimens figured the spots coalesce into irregular 

 longitudinal stripes. 



C. PHILTA, Duclos. PL 50, fig. 37. 



Shell pale yellowish brown, peculiarly clathrate with narrow 

 light chestnut lines, heavier at the intersections. 



Length, 4 '5 mill. 



Habitat unknown. 



