On two new Genera and Species of Indian Mantidse. 219 



pore-tubulation on the septum ; b, lateral view of the same, ex- 

 tending one third of the way through the wall of the test ; c, the 

 remaining portion formed of grains of calcareous sand, in the 

 midst of which is the continuation of the pore-tubulation in the 

 form of " labyrinthic structure," here omitted for perspicuity : 

 scale l-48th to l-1800th inch, d, surface-end of pore-tube, more 

 magnified, to show the pore in its centre : scale l-12th to 

 l-18(X)th inch. 



N.B, It shoidd here be remembered that as the chambers are 

 successively developed in Valvulina, the septum presents the same 

 structure as the walls of the test — that is, that the upper or in7ier 



portion is pore-tubulated, and the outer or lower one arenaceous. 

 Fig. 25. The same : portion of surface magnified, to show, a, the angular 



pore-openings of the " labyrinthic structure " in the midst of the 



sand-grains. Diagram. 

 Fig. 2Q. Lituola canariensis, D'Orb., natural size. 

 Fig. 27. The same : magnified view, to show : — a, the large and small 



grains of quartz sand respectively of which the test is composed ; 



h, the ends of the pore-tubulation or " labyrinthic structure " 



after slight abrasion of the surface. Diagram. 

 Fig. 28, The same : much more magnified, to show : — a, the holes of inter- 



cameral communication in the septum ; bbb, the pore-tubulation 



or '' labyrinthic structure " in the wall of the test ; c. pseudo- 



podial aperture ; d, lines indicating externally the limits of the 



chambers respectively. Diagram. 

 Fig. 29. The same : portion of fig. 28, d, more magnified, to show the 



pore-tubulation or " labyrinthic structure " in the midst of the 



sand-grains composing the wall of the test. «, pore-tubulation; 



b, openings of the same on the inner surface of the wall ; c, dark 



line indicating sarcodic lining ; d, surface, consisting of large 



and small grains of quartz sand respectively, the latter forming 



a kind of cement to the former. 



XVII. — Descriptions of two neio Genera and Species of Indian 

 Mantid^. By Prof. J. Wood-Mason, Assistant Curator, 

 Indian Museum, Calcutta. 



Genus Danueia, Stal. 

 Subgenus 1. Danueia. 

 1. Danuria Thunlergij Stal. 

 Hah. Port Natal. 



2. Danuria Bolauanay Sauss. 

 Hah. Zanzibar. 



3. Danuria superciliaris, Gerst. 



Hah. Zanzibar. 



15* 



