EXPI. ANATION OF PLATE XI. 



Fig. I. — Contacupes cavicornisYav. borneensis (type). Head from above^ x 2. 

 ,, la. Ditto Head from the side, X 2. 



,, 2. — Comacupes cavicornis var. laevicornis (regd. no. ^^). Head from above, 



X 2. 

 ,, 2a. Ditto Head from the side, x 2. 



,, 2&. Ditto Mentum, etc., x 4. 



,, 3. — Comacupes stoliczkae (type). Head from above, x 2. 

 ,, 3a. Ditto Head from the side, x 2. 



,, 4.— Comacupes masoni (type). Head from above, x 2. 

 ,, 4(2. Ditto Head from the side, x 2. 



,, 5. — Comacupes cylindraceus (regd. no. ^). Head from above, x 2. 

 ,, 5a. Ditto Head from the side, x 2. 



,, 6. — Another form of the same species (from a specimen in the British 



Museum). Head from above, x 2. 

 ,, 6a. Ditto Head from the side, x 2. 



,, 7. — Taeniocerus bicanthatus (regd. no. -^^^). Head from above, x 2. 

 ,, y a. Ditto Head from the side, x 2. 



,, yb. Ditto Mentum, etc., x 4. 



,, 8. — Taeniocerus pygmaeus (regd. no. ^'). Head from above, x 2. 

 ,, d>a. Ditto Head from the side, x 2. 



,, 9. — Taeniocerus bicuspis (regd. no. ~^). Head from above, x 2. 



,, 9a. Ditto Head from the side, x 2. 



,, 10.— Aulacocyclus andrewesi (from the type in Mr. Andrewes' collection). 



Head from above, x 2. 



,, loa. Ditto Head from the side, x 2. 



,, II. — Ceracupes austeni (type). Head from above, x 2. 



,, IIa. Ditto. Head from the side, x 2. 



,, 12. — Ceracupes fronticornis (regd. no. ^). Head from above, x 2. 



,, i^.— Pleur arius brachyphyllus (regd. no. ^'^°). Head from above, x 2. 



,, 13a. Ditto Mentum, etc., X 4. 



,, 14. — Tiberioides kuwerti (regd. no. ~). Head from above, x 2. 



,, 15. — Tiberioides austeni (type). Head from above, x 2. 



,, 15a. Ditto Mentum, etc., x 4. 



,, 16.— Episphenus moorei (regd. no. ^'). Head from above, x 2. 



,, 16a. Ditto Mentum, etc., x 4. 



,, iy.—Episphemi,s pear soni^ (type). Head from above, x 2. 



,, 18. — Episphenus comptoni (regd. no. °|^^). Head from above, x 2. 



,, i8a. Ditto Mentum, etc., x 4. 



,, 19. — Episphenus comptoni YQ.r. fiachi (regd. no. ^^ and ^-f^). Frontal area, 



etc., X 3, showing the variability of the shape of this area. 



,, 19a. Abnormal mentum of another specimen (regd. no. ^^) X 4. 



,, 20. — Episphenus iiidzcus, large STpecim.en (regd.no. ^^). Head from above, x 2. 



,, 20(2. Ditto Mentum, etc., x 4. 



,, 20b. Same species, small specimen (from a specimen in the Bombay Natural 



History Society's collection). Head from above, X 2. 



,, 21. — Episphenus neelgherriensis (regd. no. ^^). Head from above, x 2. 



,, 21(2. Ditto Mentum, etc., x 4. 



,, 22. — Ophrygonius cantori (regd. no. ^"). Head from above, x 2. 



,, 22(2. Ditto Mentum, etc., x 4. 



,^ 23. — Ophrygonius cantori var. dunsiriensis (type). Mentum, etc., x 4. 



' B. moorei, see above, p. 281. 



