214 eugaij a. ,«!Mith. 



Standella a^gyptiaca {CJiemnitz). 

 Mactra a3g'3'ptiaca Chemnitz; Reeve, 'Conch. Icon./ vol. 

 viii, fig. 112. 



Hab. — Congella- (Burnup). 



Only a single dead valve obtained. 



Splienia natalensis n. sp. PI. A'lII, figs. 5, 5 a. 



Testa parva, oblonga, subaequilateralis, postice paulo longior., 

 truncata et liians, obtuse rostrata,antice clausa, arcuata^sordide 

 albida, subpellucida, tenuis ; valvas leviter inaequales (dextra 

 paulo convexiore), lineis increnienti striata?, margineni ven- 

 tralem versus, etiam ad extreniitatem posticam periostraco 

 tenui indutffi, ab umbone ad medium linea vel stria instructa? ; 

 umbones paulo ante medium siti ; fossa resilii ol)liqun, tri- 

 angularis, pone umbones sita ; cicatrix anterior indistincta, 

 postica irregulariter rotunda, consj)icua; linea pallii indistincta. 



Longit. 4, alt. 2, diam. 1"5 mm. 



Hab. — Durban. 



Judging fi'om the dimensions it is probable that the shell 

 described is not adult, but, although the form may vary -when 

 other specimens are found, as is usual in species of this genus, 

 I think the radiating stria from the umbone to the centre of 

 the valves will be found to be a good specific character. It 

 does not look accidental, as it commences quite at the tip of 

 the umbones, and is a fine raised ridge within the valves. 

 It recalls the fissure in the shells of Anatina, but I do not 

 think the little form in question belongs to that genus. The 

 character of the ligament-pit is not the same ; the form is 

 more that of Sphenia, and the interior of the valves is less 

 nacreous. 



Saxicava lirata n. sp. PI. YIII, figs, 6, 6 a. 

 Testa oblonga quadrata, valde inasquilateralis, inaequivalvis, 

 sub periostraco tenui flavescente alba, utrinque oblique trun- 

 cata, marginibus superiore et ventrali subparallelis ; valvte 

 radiatim tenuiter lirata-, postice angulo obliquo instructte, 



