178 



INSECTS OF SAMOA. 



(6) The seventeen species here recorded include representatives of four new 

 genera, eleven new and six previously described species. 



(7) One species (Promecotheca reichei Baly) has been recorded as a pest of 

 the coconut palm, though it was rare in 1924, 1925. 



I wish to record my sincere thanks to Messrs. W. H. T. Tarns and K. G. 

 Blair of the British Museum (Natural History), Mr. Gr. E. Bryant of the Imperial 

 Bureau of Entomology, Dr. Walther Horn of Berlin, Dr. Franz Heikertinger of 

 Vienna, and Dr. J. B. Corporaal of Amsterdam, for assistance in my study. In 

 addition, I am much indebted to Mr. A. J. E. Terzi, who has made the drawings 

 for the text-figures. 



Cryptocephalinae. 



Apnonota, gen. nov. 



Body ovate, not hairy above. Head deeply imbedded in the prothorax. 

 Antennae fairly long, extending nearly to the middle of the body, eleven-seg- 

 mented, six apical segments thickened but not formed into a club. Eyes 

 emarginate near the roots of the antennae. Prothorax with the base not 

 margined, and with the median portion produced into an acute lobe ; the basal 

 edge without serrations. Scutellum small, visible from above, not hidden by 

 the median lobe of the prothorax and not sloping. Elytra punctate-striate. 

 Under side : intercoxal process of presternum almost quadrate, broad, with the 

 surface rough and the sides margined ; front coxal cavities rounded. Bilobed 

 segment of the tarsi small, claw segment projecting a little beyond the bilobed 

 segment ; claws appendiculate. 



Relationship. — In the form of the body and general facies the genotype of 

 the present new genus resembles Ditropidus and the allied genera ; and these 

 include a considerable number of species belonging to the Australian region. 

 The present genus differs from Ditropidus in not possessing an antennal club, and 

 in not having serrations on the posterior edge of the pronotum. On the other 

 hand the species now to be described cannot find a place in the genus Crypto- 

 cephalus, because the former has the median portion of the pronotum produced 

 into a lobe and the scutellum small, though not hidden from view by the median 

 lobe, and not in a sloping position. 



Genotype : Aprionota lucida Maulik. 



Range : Samoa. 



