28 



ALEfTRION. 



A smaller, more gracefully formed shell than the type, and 

 typically sufficiently distinct, but varies much. Kieners IK 

 is a poor one (fig. 47), and that which Reeve has given, as well 

 as his description, refers to a /V. tsenia, G-mcl. The following 

 are synonyms : N. rufula, Reeve (tig. 48), and N. spiral*, A. 

 Ad. (tig. 49). 



Var. SUTURALIS, Lam. Figs. 52-54. 



Shoulder coronated by a row of tubercles. 



Length, 1 1'5 inches. 



Philippines, Australia, New (.'tilrdniiia. 



Fig. 54 represents the typical form, whilst tig. 53 sh<>\\> M 

 variety with the tubercles almost obsolete, passing into var. 

 chif/anx N. inlerm<'.dia, Dunker (fig. 52) is \\\\ equivalent form, 

 and N. bucculenta, Marrat, an uniigured species, may als-- 

 placed here. 



X. HiRTA, Kiener. PI. <S, ligs. 50, 51, 55-59. 



Light yellowish or orange-brown, with usually a pale central 

 band. Length, 1 inch. 



Philippine*, dfatralia, Polynesia. 



The undoubted synonyms of this species are N. I 

 Hombr. et Jacq. (tig. 57), N. Molir-A-ana, Nevill (fig. 5<S). .V. 

 costata, A. Ad. (fig. 50) and N. crcnnldhi, Ueeve. not IJrug. (lig. 

 56). N. cremdata, IJrug. is not to be identified positively, but 

 looks more like N. arc u I aria than the present species. JV. , 

 probably runs into the next species, A r . luoni/e. >'<>r<i , 



Powis (fig. 55), is not a satisfactorily determined form; if the 

 figure which 1 copy from Reeve is correct, it appears to be a 

 very broad, short, large specimen of N. hirl'i, connecting with 

 N. pulla. Linn. The localities of .V. i><l ifc.ru . " Panama and 

 Ualapagos," are almost certainly incorrect. A'. l>i/(irin, IJaird 

 (lig. 5 ( ,)) is, I think, a stumpy variety. 



N. .MONILK, Kiener. PI. ',), figs. (JO-US. 



Vellowish or ;oh color, with a rather broad darker central 

 band, and sometimes narrower ones above and below it. Surface 

 beautifully polished, ribs more llcxuous than in A", hi Ha; a 

 double row of nodules below the suture, caused by an impn 

 line on the sloping shoulder. Length, 1 inch. 



Philippines, Auti' 



