424 Bulletin American Museum of Natural History [Vol. LIII 
The two ends are about equally curved. The strong periostracum is 
black. The interior is white with some ecru-olive spots and stains. It 
becomes iridescent posteriorly. The anterior and visceral muscle scars 
are deeply sunken. Foot protractor large. The hinge plate is broad but 
very short, covered with cuticular laminzanteriorly, abruptly terminated 
by a deep sinulus posteriorly. Beaks are deeply eroded, situated at 
about the anterior fourth of the length. 
Length, 135 mm.; height, 89 mm.; diameter, 49 mm. 
Hy te? as) e 36 
Fig. 92. Aspatharia wissmanni (v. Martens) Medje. 
While this species is related to A. rubens (Lamarck), it is certainly 
distinct by the larger, more ponderous shell, constantly white nacre, 
the much heavier and relatively shorter hinge plate and the black 
periostracum. The more highly arched dorsal margin is also character- 
istic in adult shells. Old and young specimens from Medje are figured. 
Aspatharia (Spathopsis) wissmanni bangalorum, new subspecies 
Text Figure 93 
Spatha rubens var. wissmanni DAUTZENBERG AND GERMAIN (in part), 1914, Rev. 
Zool. Afric., IV, 1, p. 68. 
Malema (between Bumba and Basoko) (J. Bequaert Coll.). Type 
in the Congo Museum at Tervueren. 
