CHRYSOMELIDAE; WITH A NOTE ON THE COMPARATIVE 

 ANATOMY OF SOME HALTICINE TIBIAE 



By S. Maulik, M.A., Cantab., F.E.S., P.Z.S. 



(With 18 Text-figures.) 



The following beetles of the Family Chrysomelidae occur in the Samoan Islands : 



Subfamily Cryptocephalinae. 1. Aprionota lucida, gen. et sp. nov. 



2. Pycnophthalma tutuilana, gen. et sp. uov. 

 Eumolpinae . . 3. Stygnobia aenescens, sp. nov. 



4. ,, cauta Weise 



5. „ variabilis, sp. nov. 



6. „ minuta, sp. nov. 



7. Rhyparida subaeneicollis Fairmaire. 



8. Siethotes rufonigra, sp. nov. 



„ Chrysomelinae . 9. Plagiodera samoana, sp. nov. 

 Galerucinae . 10. Aulacopliora similis Olivier. 



11. „ quadrimaculata F. 



12. „ nigrobrunnea, sp. nov. 



13. Plesistia brunnea, gen. et sp. nov. 

 Halticinae . . 14. Nesohaltica nigra, gen. et sp. nov. 



15. Sphaerophyma insularum, sp. nov. 

 „ Hispinae . . 16. Promecotheca reichei Baly. 

 „ Cassidinae . . 17. Cassida singula Montrouzier. 



Remarks about variation, geographical distribution, morphology and other 

 interesting points have been made in the body of the paper, but can be sum- 

 marised as follows : 



(1) The species that are apparently indigenous and confined to these islands 

 have Australasian affinities. 



(2) Some species of wider distribution also occur in these islands. 



(3) Some species have evidently been introduced with agricultural 

 commodities. 



(4) A general idea concerning variation in island faunas is formulated on 

 p. 191. 



(5) Of the sixteen subfamilies of Chrysomelidae, seven are represented in 

 the collections dealt with in the present paper. 



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