SILIQUARIA. 189 



Yar. LINEATA, Morch. Whitish, whorls with close longitudinal 

 light orange-colored lines below. 



S. ENCAUSTICA, Morch. PI. 57, fig. 13. 



Small, thick, rugose, irregularly pyramidal, pointed, tube small, 

 umbilical region covered by an enameled callus, thickened, 

 roughly wrinkled and transversely fissured on the peripheral 

 side; slit closed in the upper whorls, then articulated, finally 

 open, continuous. 



Ceylon. 



Described from a single specimen in the Cumingian collection. 



S. TROCHLEARIS, Morch. PI. 57, fig. 14. 



Rather thin, umbilicus narrow, pervious ; whorls 6, at first 

 close, then dissolute, plane above and below, transversely 

 densely rugosely fissured, longitudinally very obsoletely striate 

 and sulcate, with yellowish spiral lines, slit undulately dentate. 



Philippines. 

 S. OBTUSA, Schum. PL 57, figs. 15, 16. 



Shell elongated, whorls large, spirally rather finely li rated, 

 smoother on the umbilical face, thickened on the outside and 

 transversely fissured; spiral slit simple, frequently closed 

 towards the apex. 



Mediterranean Sea. 



It is S. anguina, of Phil., Sowb., etc., but not of Linnaeus. 

 There are Yars. ROSEA, Montr., and COST^E, Cantraine. 



Section AGATHIRSES, Montfort, 1810. 



S. AUSTRALIS, Quoy and Gaimard. PI. 58, fig. 20 ; PL 57, fig. 17. 

 Shell large, thick, apex pyramidal, tube finely longitudinally 

 striated on the inner side, thick, rugose and transversely fissured 

 on the outer side, slit represented by round holes, gaping open 

 near the aperture. 



Australia. 



Morch describes Yars. SCALARIFORMIS, MULTILIRATA and 

 T^ENIATA (fig. 17). 



S. REENTZII, Morch. 



Graceful, obsoletely longitudinally lirulate, rust color, whitish 

 towards the aperture, with a chestnut line below the slit. First 

 described as Yar. ferruginea of S. Australis. 



