Io6 JOURNAL OF CONCHOLOGY, VOL. ID, NO. 4, OCTOBER, 19OI. 



var. =: J/, angustata A. Adams; Pilsbry, op. cit. p. 194, p]. 59, fig. 61. 



Hah., Port P:iizabet]i (Sow.); Pondoland (Brit. Mus.). 



Tht; Pondoland specimeris are shorter tlian typical South Australian 

 examples of this species, agreeing, in this respect, with the form angus- 

 fata, which appears to me a variety o( produda, rather than a distinct 

 species. The South African specimens have the foramen extending 

 forward to the middle of the shell, even further than in typical producta 

 and decidedly further than in the form angustata. I cannot discover 

 any differences worthy of notice in any of the varieties of sculpture or 

 style of colour. Three out of four of the Pondoland specimens exhibit 

 a slight sinus or indentation of the margin at the posterior end, with 

 a very deep excavation above it, in which respect it agrees with M. 

 inegatre/na A. Adams. 



5. Patella? decemcostata. (PI. I., fig. 22). 



Testa parva, depressa, costa/a, costis decern obtusis, subiiodosis, radiatim 

 striatis, albida, inter castas nigro-fusco maciilata, lineis incrementi 

 irregularibiis sculpta ; inter stitia inter castas ceque radiatim striata, 

 interduvi casta minore instructa ; apex flavescens, mediacriter aciiti/s, 

 pallia a}iteniedianus ; superficies interna nitida, albida.fusca radiata 

 viargine exteriare irregulariter angulato vet rotiinde dentate, Longit 

 9 mm., diam. 7, alt. 4. 

 Hab., Algoa Bay. 



This does not appear to be the young of any of the known species. 

 The three specimens examined rest upon the anterior and posterior 

 ends, the sides rising slightly in the middle. Of the ten principal cost^, 

 three radiate towards the front, five posteriorly, and one on each side 

 laterally. When the soft parts are examined this form may prove to 

 be an Acmcea. 



6. Acmaea roseoradiata. (PI. I., fig. 19). 



Testa parva, depressa, alba, lineis radiantibns roseis numerasis picta, 

 apiccm verstis scepe rosacea, It^vis, incrementi lineis irregularibus 

 sculpta ; apex leviter erosus, idea hand acntus, circiter in \ longitu- 

 dinis situs ; latiis anticum recte declive, vix concavum, posiicum levis- 

 sime convexum ; superficies interna albida, raseo-radiata, interduni in 

 fundo rosacea, lc£vis, nitens ; margo simplex, ad latera leviter elatus ; 

 cicatrix magna, antice lata. Longit. 5J ///;//., diam. 4J, alt, 2. 

 Hab., Cape Town (W. F. Williams and T. J. Simey, in Brit. Mus). 

 Somewhat resembling Acma:a virginea, but smaller, without radiat- 

 ing sculpture and the interior is not margined in the same manner. 

 The rays are about 18 to 20 in number, and pinker than in A. Vir- 

 ginia. In fresh specimens the apex would probably be acute and 

 somewhat curved over anteriorly. 



