254 AiDiaiti uf the South African Museum. 



GLOSSITES aff. DEPEESSUS, Hall. 

 (PL XXXL, fig. 5.) 



There is one large specimen of a left valve (No. Ill) which is 

 referable to the genus Glossites. The description is as follows : 

 Shape elongated oval, rather more pointed anteriorly than posteriorly, 

 highest behind umbo ; basal margin regularly curved ; hinge-line 

 curved, slightly oblique. Umbo small, low, inconspicuous, not 

 swollen nor incurved, nor rising above hinge-line, placed at about 

 one-fourth the length of the shell from anterior end. Surface of 

 valve moderately convex, with very weak undefined umbonal ridge 

 running obliquely backwards towards posterior lower angle but 

 dying out before reaching it. Surface marked by rather strong 

 concentric wrinkles, fasciculate towards anterior end. 



Dimensions. — Length 75 mm. ; height (maximum) 33 mm. 



Affinities. — The nearest ally of this form seems to be G. depressus, 

 Hall,''' particularly as regards the hinge-line, umbonal ridge, and 

 position of umbo ; but it has more the elongated oval shape of 

 G. lingualis, Hall.f Both occur in the Chemung Group. 



Locality. — (No. Ill) 1st Sandstone, near Klein Straat Siding. 



CARDIOMORPHA CAMPESTRIS sp. nov. 

 (PI. XXXL, fig. 6.) 



There is one right valve of a shell (No. 102) which must be 

 referred to the genus Cardiomorpha. In shape it is subquadrate, 

 rounded, and very convex, especially near the beak and anterior 

 end. The hinge-line is straight, shorter than the shell ; the ante- 

 rior end is short, abrupt, and rounded, and descends steeply to the 

 basal margin ; the basal margin is gently arcuate ; the posterior end 

 is broadly rounded, not truncate. The beak is subanterior, large, 

 prominent, obtuse, swollen, incurved, rising a little above the hinge- 

 line. There is a rounded undefined umbonal ridge, merging gra- 

 dually into the posterior part of the shell, somewhat flattened in 

 front. The surface is marked with fine regular concentric striae and 

 with 3-4 coarse, rather irregular corrugations. 



Dimensions. — Length 19 mm.; height 14 mm.; depth (of the one 

 valve) 5 mm. 



* Hall, op. cit., pi. xl., tiRs. l-i, 17 ; pi. xcvi., tig. 12, p. 4m. 

 t Ibid., pi. xl., tigs. 16, lit ; pi. xcvi., tigs-. 9-11, p. 4'J7. 



