298 MELVILL AND STANDEN : SHELLS FROM LIFU. 



cos fas contingentibus, ultimo anfractu superne juxta suturas 

 rotundo-angulato, antice attenuate, costis rectis, apertura 

 angusta, labro simplice, intus striata, columella quadri- 

 plicafa, plica super iore magna. 

 Lotig., 19, Lat., 6 mill. 



A critical species, which we have known for a long time, 

 but never been able to diagnose with certainty. Its nearest 

 affinities lie with M. angulosa Kiister, a much more attenuate 

 species, larger in all its parts ; AI. Antonelli Dohrn, differing in 

 colour and the clear shining ribs, not covered by the spiral 

 liration ; AI. fusiformis Kien. more closely ribbed and sharply 

 angled, with different coloration ; AI. salmonea Dohrn, 

 perhaps the nearest approach, but differing in colour and tex- 

 ture ; and AI. compta Reeve, but this last is not so easily com- 

 parable. It is a pretty shell, as are all the Costellarice, palest 

 ochre in hue, turreted, whorls eight, ventricose, angled below the 

 suture and with straight longitudinal ribs crossed with frequent 

 lira;. Mouth thick within, lip simple. A very few specimens. 

 There is an individual in J.C.M.'s collection from Mauritius. 



Bittium aeolomitres sp. nov. (H. X., fig. 46). 



B. testa minutissima, cylindracea, pupceformi, compacfa, 

 anfractibus octo, duobus apicalibus, cceteris bino gemmarum 

 online spiraliter acciuctis, in penultimo et a/itepcnultimo 

 anfractu gemmulis permagnis, nitidissimis, ultimo anfractu 

 tribus similibus ordinibus decorato, apertura trigona, peris- 

 tomate tenui, canali brevi. 

 Long., 2*25, Lat., 1*25 mill. 



A very small species. Pupiform, with eight whorls, adorned 

 with two rows of papilliform gemma?, those in the two whorls 

 before the last being the largest, the last whorl having three 

 rows of gemmules. The coloration is vivid. Apical whorls 

 fulvous brown, the two next ochreous, then a darker brown hue, 

 the penultimate being slightly lighter, the last whorl pale 

 ochreous above, towards the base darker brown. (uioAo/zit/jv/s, 

 with glancing or glittering girdles.) 



J.C., viii., Oct. 1S96. 



