EXPLANATION OF PLATE XII. 



Fig. 24. — Ophrygonius inaequalis (regd. no. ^). Head from above, x 2. 

 ,, 24a. Ditto Mentum, etc., X4. 



,, 25. — Acer ants hovneanus (regd. no. ?|^). Head from above, x 2. 

 ,, 25«. Ditto Left mandible from the side, x 4. 



,, 25e. Ditto Mentum, etc., x 4. 



,, 26. — Aceraius wallacei (regd. no. ??p). Head from above, x 2. 

 ,, 26a. Ditto Left mandible from the side, x 4. 



,, 260. Ditto Mentum, etc., x 4. 



,, 27. — Aceraius laevicollis (regd. no. ~). Head from above, x 2. 

 ,, 2ya. Ditto Left mandible from the side, x 4. 



,, 28. — Aceraius grandis subsp. hirsutus, a specimen of moderate size (regd. 



no. ~). Head from above, x 2. 

 ,, 28a. A large specimen of the same species and subspecies (regd. no. ?^). 



Head from above, x 2. 

 ,, 28b. Left mandible of a similar specimen to the last from above, X4. 

 , , 29. — Left mandible of another specimen of the same sub-species (regd. no. 5^) 



from above, x 4. 

 ,, 30. — Aceraius grandis var. rectidens (from a specimen in the Sarawak Museum 



collection). Head from above, x 2. 

 ,, 31. — Aceraius kuwerti (from a specimen in Mr. Andrewes' collection). Head 



from above, x 2. 

 ,, 32. — Aceraius illegalis (regd. no. ^-). Head from above, x 2. 

 ,, 32(2. Ditto Mentum, etc., x 4. 



,, 33. — Aceraius möschleri (regd. no. ~). Head from above, x 2. 

 ,, 34. — Aceraius alutaceosternus (regd. no. -^). Head from above, x 2. 

 ,, 34a. Ditto Mentum, etc., x 4. 



,, 35. — ^c^fazMs /JzYï'/gf (from a specimen in Mr. Andrewes' collection). Head 



from above, x 2. 

 ,, 36. — Aceraius himalayensis (type). Head from above, x 2. 

 ,, 36a. Ditto Anterior part of head from the right side, X 4. 



,, 37. — Aceraius assamensis (regd. no. ^). Head from above. 

 ,, 37^ Ditto Anterior part of head from the right side, X 4. 



,, 38. — Aceraius tavoyanus ^ (regd. no. ^). Head from above, x 2. 

 ,, 38a. Ditto Anterior part of head from the right side, X 4. 



,, 39. — Aceraius helferi (regd. no. -~). Head from above, x 2 

 ,, 39a. Ditto Anterior part of head from the right side, X 4. 



^ A. helferi, see above, p. 292. 



