188 SILIQUARIA. 



Tar. PLANOBOIDES, Mo'rch, fig. 9. Rather thin, irregularly plan- 

 orbiform, laterally affixed, beautifully densely longitudinally 

 striated and flatly lirate, spire turretelloid. It is Serpula 

 regular is, Chenu. 



Yar. CRASSA, Morch, fig. 10. Lir^e prominent, shell irregularly 

 twisted. Animal greenish maculated and reticulated with 

 white, tentacles long, subulate, interruptedly lineated ; pro- 

 boscis short, rounded. This is Serpula Panamensis, Chenu. 



Yar. EBURNEUS, Reeve (fig. 6). Shell white, thick, loosely whorled , 

 with distant, subobsolete longitudinal sculpture. = Yar. 

 volubilis, Morch. 

 There are also vars. LAQUEARIS, CINNAMOMINA, PICTA, TIGRINA, 



CASTANEA, DISCIFER and SUBGRANOSA of Morch. 



Y. EFFUSUS, Yal. in part (PI. 56, fig. 7). Hob. unknown. 



Y. TURRITELLA, Rouss. (PI. 56, fig. 8). Hab. unknown. 



Y. SOLARINUS, Morch (unfigured). Philippines. 



Y. RASTRUM, Morch (unfigured). Hab. unknown. 



Genus SILIQUARIA, Brug., 1789. 

 Section SILIQUARIA (sensu stricto). 

 S. PONDEROSA, Morch. PI. 57, fig. 11. 



Yellowish white, very thick, large ; whorls broadly convoluted, 

 apex obtuse, outer half of whorls much thickened by a deeply 

 transversely fissured layer, slit continuous below, margined above 

 by waved dentate lamellae, in the earlier whorls usually articu- 

 lated, thin, filled within by shelly matter. 



Australia. 

 S. SENEGALENSIS, Recluz. PL 57, fig. 12. 



Heavy, upper portion of spire-whorls a little convex, plane or 

 excavated, closely radiately undulate-sulcate, closely volute, 

 forming a narrow umbilicus, externally transversely deeply fis- 

 sured, slit open, slightly undulate-dentate; pink or pale fulvous. 



Senegal. 

 This is S. incisa of Morch, not Chemnitz. 



Yar. ROSEA, Morch. Deep rose-color, apex whitish, umbilicus 

 pervious. 



