BY RKV. T. BLACKBURN. 65T 



Of the 46 names remaining (after the elimination of the 10 

 that I somewhat confidently deem synonyms) there are 9 that 

 seem to represent species unknown to me. They are discoidalis, 

 Chp. ; /uscitarsis, Chp.; /uscula, Clip., (possibly a var. of Atalanta,. 

 Blackb., which, however, belongs to Subgroup iii.) ; partita, 

 Chp.; signata, Boisd., (possibly = coaf/nit^a, Chp.); siibcenescens, 

 Chp.; venustula, Chp.; stillatipennis, Chp., (possibly not a member 

 of this subgroup); notatipennis, Chp., (possibly a var. of suhfas- 

 ciata, Chp., as noted below). 



Thus there remain 37 names which I have been able to apply 

 confidently to insects before me. Many of them (as mentioned 

 below in the detailed notes) are names of species of which I have 

 seen types or quasi-types. In the following pages I describe 14 

 new species, so that I treat this subgroup as consisting of 51 

 species known to me and 9 of which I have not seen examples. 



Some remarks on the characters that I have used in tabulating 

 the species of this subgroup will be found under the heading of 

 the following species, viz., scutellata, uvibrosa, minor, posticalis, 

 fustiva and apicata. 



In Part iii. of this series of memoirs (P.L S.N.S.W. 1898, p. 

 220) I stated that the colours of the species forming this sub- 

 group are not evanescent after death. I have since found that 

 that remark was of too general a character and should have read 

 " the colours being rarely metallic or evanescent after death." 



Tahxilattd statement of the characters of the species forming Siihgroup IV. 



A. Size comparatively large (at least loug. 4i 

 lines). 

 B. Form strongly convex (more so than P. 



intacta, Newm.) variabilis, Chp. 



BB. Form much more depressed. 

 C. Sides of prothorax subconfluently rugulose- 



punctulate subcostatd, Chp. 



CC. Sides of prothorax sparsely and not rugu- 



losely punctulate lineata, Marsh. 



AA. Size notably smaller (rarely loug. 4 lines). 



