EXPLANATION OF PLATE. 



Figs, i, \a — Scalpellum inerme. i, Outline of capitulum and plates, xi. la, Mouth, list 



cirrus and opening of female genital organs, x2. 

 Fig. 2 — Scalpellum sociabile, xi. 



Figs. 3, 3a, 2>b — Alepas gigas, 3, 3a, xi ; 3<5, Mandible, xio. 

 Figs. 4, \a — Alepas malaysiana, X5. 



