146 



spatia striis tenuibus volventibus, insculptis, ultimo dimidiam 

 longitudinis testae subaequante ; costa basali elevata acuta. Aper- 

 tura angusta, effusa. Axis 6; diam. 2.0 millim. Inhabits Kikaia 

 and Ousima. W. S. 



Rissoixa tornatilis. T. subulata, acuminata, straminea; 

 anfr. 9 -j- convexis, clathris acutis iongitudinalibus circ. 22, filis 

 elevatis volventibus 4-5 insignibus. Apertura modica, antice vix 

 effusa : peritremate acuto, extus valde incrassato, crenato. Axis 



5.5 ; diam. 2 millim. Inhabits Loo Cboo. W. S. 



Alvaxia acuminata. T. gracilis, turrita, straminea; anfr. 

 nucleosis 3 Iaevibus, dein duobus bicarinatis, denique 4 normalibus, 

 tumidis plicis subacutis et carinis (3) eleganter cancellatis. Aper- 

 tura ovata ; labro tenui; columella aurantiaco tincta. Axis 3 ; 

 diam., 1 millim. Inhabits Bonin Is. W. S. 



Closely allied to A. excurvata, Cpr. 



Alvaxia PENESTEATA. T. minuta, conica, lucida ; anfr. 

 nucleosis 2 helicoideis ; normalibus 4 ventricosis, antice aurantia- 

 cis, postice albidis, eleganter fenestratis (clathris angustis circ. 15, 

 liris spiralibus 2, quarta vel quinta circa basin baud decussatis) 

 interstitiis quadratis, Iaevibus. Apertura suborbicularis ; labro 

 continuo, acuto ; columella aurantiaco tincta. Axis 2 ; diam. 1 -\- 

 millim. Inhabits China Seas. W. S. 



Broad in proportion to its length, and exquisitely sculptured. 



Alvaxia quadrata. T. minutissima, alba, lanceolata ; anfr. 

 4 quadratim decussatis, clathris circ. 16, liris spiralibus 3, circa 

 basin tribus additis. Apertura subovalis ; labro incrassato. Axis 



1.6 ; diam. .8 millim. Inhabits China Seas. "W. S. 



The apex is not perfect enough to decide the genus positively, 

 but the aspect is essentially Alvanoid. 



Alvaxia puba. T. elongata, acuta, lactea, nitida, clathris 

 circ. 24 et filis volventibus (5-6) decussata, ad anfr. ultimum filis 

 10 quorum tribus anticis moniliferis et constrictione alteris sejunc- 

 tis ; anfr. 8 convexis. Apertura semicircularis, obliqua, effusa 

 labro acuto, varice externo suffulto. Axis 6 ; diam. 2 millim. 

 Inhabits Simoda. W. S. 



Alvaxia LIGATA. T. solida, acute ovata, subperforata; 

 epidermide rut'a induta et carinis circ. 4 (ad anfr. ult. 7) cincta, 



