262 



and more acute, the space on the head behind it flat instead 

 of concave, and the clypeus and tibiae reddish. 



Horonotus optatus, Sharp. 



H. variolicollis, Fairm. 



Palmerstonia minor, Blackb. 



P. pusilla, Blackb. 

 Prior to their despatch to the British Museum I 

 examined the types of minor and pusilla, and was satisfied 

 that they are but forms of optatus, a species that varies 

 greatly in size, and is frequently attracted to lights in the 

 tropical parts of Queensland. Part of this synonymy has 

 already been recorded. 



Horonotus bovilli, Blackb. (formerly Palmerstonia). 



A male from Cairns (E. Allen) differs from the male 

 previously commented upon by Blackburn (ante, 1896, p. 

 254), in being considerably larger, in having the cephalic 

 horn considerably larger, and the three prothoracic horns 

 larger, more acute, and not placed in a transverse row (as on 

 that specimen), but closer together, two in front and one 

 behind ; the difference to the eye is a very striking one, but 

 the species of Horonotns are so variable that the difference 

 is not likely to be more than an individual one. The 

 stridulating file of the pygidium is a very beautiful one. 



Hemipharis froggatti, Macl. 



I have recently examined the types (sexes) of this species. 

 As suspected ( 12 ) they belong to the variety speciosa of H . 

 insularis. 



Chlorobapta viridisignata, Macl. 



A female in the Macleay Museum is evidently the type 

 of this species, and as suspected ( 13 ) it is a variety of frontalis. 

 On its prothorax there are two small green spots on each 

 side ; associated with it is a male with quite ordinary 

 markings. 



DlAPHONIA DORSALIS, Don. 



A male (from the Richmond River) in the Macleay 

 Museum has the black markings much more extended than 

 usual, the pale portion on each side of the prothorax being 

 very narrow, the elytra are dark except for a very narrow 

 lateral margin, and even this becomes infuscated about the 

 apex ; a second specimen (also from the Richmond River) has 

 the pale elytral margins somewhat wider, and about the apex 



(12) Trans. Roy. Soc. S. Austr., 1914, p. 149. 

 (i3)L.c, p. 156. 



