CETONIIDAE FROM WEST AFRICA 335 



46. P. incoides, Thonis. 



P. adniixliis, Ivz. {ncc Hope). P. gabonicif^ , Fairm. 



( aiiicrooiis (l',()iij()ii<i-() ]''('l)nian- I !)03 : Ml. CaiiKM'ooii . "iOO- 

 (100 m. , Jidv IDO^i). 



This species has been usually considered Ihe same as iidnHxtus, 

 Hope, l)ut Fairmaire, tVoni an examination (jf Thomson's 1y})e, has 

 indicated (Unii. Soc. Fnt. Fi-mce 189o, p. '•XiM) wlierein they 

 differ, to whicli I may add, that in the specimens taken by Fea 

 and others in my collection, there is only one marj^inal tooth on 

 the anterior tibiae in both sexes, whereas in adnuxtus there are 

 two ; the upper one although small being- quite distinct ; the ca- 

 rina on the clypeus is also more dentiform and prominent and 

 the mesosternal process is decidedly shorter than in admixtus. 



47. P. robustus, Jans. 

 P. knutsoni, Auriv. 



Mi. Cameroon (Buea 800-1200 ni. , June-July 1902). 



Botli sexes, shewing l)ut little external difference, were obtai- 

 ned l)y Fea. My description was published in 1884 and that of 

 Aurivillius in 1886. 



48. P. dichrous, Gerst. 



Mt. Cameroon (P>uea, 800-1200 m. . June-July 1002). 

 A single example. 



49. Macroma confusa, Westw. 



Portuguese Guinea (Bolama, June-December 1899). 

 A single male example. 



^30. M. congoensis, Bates. 



French Congo (Ndjolè, November-December 1902). 



The two female examples obtained by Fea differ fr()m the 

 typical form , from the Upper Congo, in being rather larger , 

 broader , and more strongly punctured , the elytra are also red- 

 dish piceous along the centre . the yellow on the head extends 

 to the apex of the clypeus , the spots on the penultimate abdo- 

 minal segments are considerably extended inwardly towards the 

 centre and the legs are entirely black. They would almost appear 

 to represent a separate species but intermediate variations also occur. 



