118 



INSECTS OF SAMOA. 



Lamononia, genus novum. 



Front with transverse carina ; mouth parts directed forward and down- 

 ward. Antennae slender, serrate from third joint onwards ; second joint 

 small ; third and fourth joints equal. Prothorax narrowed anteriorly ; sterno- 

 pleural sutures double, excavate in front. Mucro bent sharply upwards between 

 the coxae. Mesosternal cavity perpendicular, strongly carinate medianly. 

 Lamina of hind coxa strongly narrowed outwardly ; a strong blunt tooth at 

 about the middle of its posterior margin. Tarsi with second and third joints 

 strongly lamellate. First joint of posterior tarsus only slightly longer than the 

 next three joints together. Claws simple. 



Genotype : Lamononia monticola, sp. n. 



The relation of this genus to Pro-psephus is the same as that of Spilus to 

 The strongly bent mucro distinguishes the new genus from 

 Spilus, Ischiodontus and Pantolamprus, while the per- 

 pendicular mesosternal cavity makes confusion with 

 Propsephus impossible (Text-fig. 6, A). 



The genus is named in memory of Lamonon, the 

 French naturalist of the ill-fated La Perouse expedition, 

 who, with others from the Astrolabe, was murdered by 

 natives on Tutuila in December, 1788. 



Ischiodontus. 



9. Lamononia monticola, sp. n. (Text-fig. 5). 



Male : 13-5 mm. long ; 4 mm. wide. Elongate, 

 shiny, dark brown, with the lateral margins of the 

 prothorax, the median part of the scutellum, the base, 

 lateral margins and sutural margins of the elytra, rufous. 

 Antennae rufous. Pubescence luteous, moderately thick. 

 Front flat ; moderately punctate. Prothorax wider 

 than long, slightly convex ; sides evenly narrowed from 

 the base of the posterior angles to the anterior margin. Posterior angles 

 strongly unicarinate, sinuate but not divergent ; tips acute. Punctuation 

 moderately fine, closer on the sides than on the disc, but not coarser. Scutellum 

 subpentagonal, arcuate in front, sinuate on sides, shiny, very finely punctate. 

 Elytra slightly narrower than prothorax, subparallel to about their middle, 



Text-fig. 5.- — Lamononia 

 monticola, sp. n. 3 male. 



