478 NOTES ON PROSOBRANCHIATA, 



LoTORiUM ELONGATUM, Reeve. 



Treated by Tryon as a synonym of L. vespaceum. It is more 

 elongate, not so heavil}^ transversely, but more heavily spirally 

 sculptured, and has a smaller protoconch. Watson {oj). cit.) has 

 already maintained the validity of this species. 



LoTORiuM THERSITES, Reeve. 



Tryon regards this as the mature condition of L. vespaceimi, sl 

 conclusion with which, after studying a fairly large series, I 

 cannot agree. Whilst being slightly shorter, it is decidedly 

 broader, has a shorter canal, is somewhat distorted (vespaceum is 

 quite regular), is more prominently angled at the periphery, has 

 more varices, fewer and stronger intervarical ribs, and is more 

 delicately sculptured. The intervarical ribs do not continue on 

 the body whorl so far towards the canal as Reeve's figure shows. 

 The revolving lirse, which are smaller, more finely beaded, and 

 equal, incline to fade away between the transverse ribs, on the 

 crests of which and on the varices they are strongest. The inter- 

 stitial striae are also finely beaded. The protoconch of L. vesjmceum 

 is the larger and set on straight, whilst that of the species under 

 discussion is set obliquely. 



LoTORiUM MORiTiNCTUM, Reeve. 



This was quoted by Dunker (op. cit.), and more recently by 

 Stearns and Pilsbry (op. cit.). Martens also used the name (07;. 

 cit.). 



LoTORiuM SAULiii:, Reeve. 



Quoted by Stearns and Pilsbry (op. cit.). With reference to 

 Lotorium australe, Lamk., Pritchard and Gatlifi" (o^:>. cit.) write: 

 "In our opinion it is doubtful that T. nodifer, Lamk., and T. 

 saulice, Reeve, are identical, and we cannot concede that T. 

 australis is also identical.'' 



Lotorium strangei, Ad. & Ang. 



This species, confounded by Tryon with L. labiosum, Wood, 

 and by Pritchard and Gatlifi" (op. cit.) treated as the young of L. 



