306 melvill and standen : shells from lifu. 



basim spiraliier unicarinato, apertura rotunda, peristomate 



incrassato, continuo. 



Long., i, Lett., -50 mill. 



Very minute, pure white, whorls six, of which two are 

 apical, much ventricose and impressed at the sutures. The 

 whorls are ornamented with clathrate riblets and lira;, three- 

 ranked spirally in the upper whorls, four in the lowest, with a 

 sharply-turned keel round the base. Aperture round, outer lip 

 continuous, thickened, (pisinnus, a small child). 



Rissoina baculum-pastoris sp. nov. (PI. XL, fig. 61). 



R. testa prazlonga, atlenuata, interdum flexa, nit/da, Candida, 

 anfractibus deeem, apicali papillari, eceteris Icevibus, ad 

 medium spiraliter acutangitlis, ad suturas impressis, ultimo 

 a7ifractu biangulato, apertura ovata, peristomate incrassato, 

 fere continuo. 



Long., 6, Lat., 1*50 mill. 



Allied, doubtless, to R. spirata Sowb., so protean in its 

 forms, but it seems distinct from every variety. It may also be 

 allied to R. miranda A. Ad. or R. insolida Desh., by some con- 

 sidered only a variety, but there is no sign of the crenulations, 

 so very conspicuous an ornament on the whorls of these two 

 last species. One of our specimens is bent, giving the aspect of 

 a shepherd's staff, hence the trivial name. The shell is white, 

 shining, ten whorled, the whorls smooth, impressed at the 

 sutures, and uniformly spirally once ribbed, the last whorl twice; 

 mouth ovate, peristome almost continuous, thickened. Some 

 slight resemblance in sculpture to species of Scalenostoma may 

 be observable. 



R. catholica sp. nov. (PI. XL, fig. 62). 



R. testa oblongo-fusiformi, parva, nivea, nitida, apice 

 obtusato, anfractibus sex, apicali simplice, cteteris ventricosulis, 

 longiludinaliter arete obliquicostatis, interstitiis hie Icevibus, 

 illic sub lente tenuissime striatulis, apertura ovata, paullulum 

 effusa, labro incrassato. 

 Long., 3, Lat., 1-25 mill. 



J.C., viii., Oct., 1896. 



