300 Mr. J. S. Baly's notes on 



variety {A. sexnotata, Chap.), although he has placed 

 this latter name as a synonym of the species. In my 

 diagnosis of bicolor, I. c, p. 19, I described the ground 

 colour of the elytra as black, whereas it ought to have 

 been nigro-caeruleous. In A. semiopaca, Jac, which does 

 not differ except in colour from the parent form, the 

 caeruleous tint is absent. 



Sp. 23. relicta, Boisd. 



Duvivieri, Baly. 



In Boisduval's description the legs are given as flavous, 

 the hinder pair alone being stained with fuscous ; in 

 Duvivieri the four hinder legs are black. Not knowing 

 Boisduval's type I am unable to give any structural 

 differences, but relicta is an Australian insect, whilst 

 Duvivieri is a native of Java and Malacca. 



Sp. 25. scutellata, Boisd. 



palustris, Perroud. 



Wallacei, Baly. 



Boisduval's description, " Lit^m ; scutello nigro ; abdo- 

 mine pectoreque nigro-fuscis,^' is too brief and vague in 

 the absence of the actual type (now probably destroyed) 

 to be applied to any one given species of the genus : 

 palustris, Perroud, a common New Caledonian insect, 

 belongs (as I have ascertained both from M. Perroud's 

 full description and from the examination of authentic 

 specimens) to the genus Monolepta .• Wallacei, mihi, 

 has the four hinder legs black. In the absence of 

 Boisduval's type it is impossible to give any structural 

 differences. 



Sp. 27. nigroscutata, Baly. 

 Var. Mouhoti, Baly. 



These two species, which M. Allard has placed together 

 as varieties of one specific form, are perfectly distinct ; 

 in nigroscutata, a ? , the apex of the anal segment of the 

 abdomen is produced into a long acute process ; in the 

 same sex of Mouhoti the apex is deeply trilobate. 



Sp. 28. hicornuta, Allard. 

 This insect is only a dark variety of cornuta, mihi. 



