161 



however, to agree in general with Burmeister's short descrip- 

 tion, except in the maculation of the prothorax and elytra.' ' 

 Burmeister, however, described the prothorax as having a 

 black spot on each side, so that practically the only difference 

 in the markings of the types of ochracea and octopunctata 

 was on the shoulders, and as noted above these are very 

 variable. Although Burmeister in the Latin portion of his 

 description mentioned but eight spots, in the German portion 

 he mentioned eleven (including the one on the pygidium). 

 He referred the species to Eupoecila and Kraatz transferred 

 it to Polystigma. Ochracea was referred to Schizorrhina and 

 transferred by Thomson to Neorrhina. Apparently it was 

 known by the description and figure only to Kraatz. 



Froggatt in his "Australian Insects" (p. 161) says "a 

 second species, described under the name of octopunctata, is, 

 I think, only a variety" of punctata. This is an error, the 

 species is abundantly distinct from punctata, apart altogether 

 from the markings. 



The type of ochracea was a male, as the front tibiae were 

 figured as being armed at the apex only. The female differs 

 in having the legs shorter, front tibiae strongly tridentate, 

 the other tibiae each with a more pronounced postmedian 

 tooth, and the abdomen wider and evenly convex along middle. 



Polystigma punctata, Don. 

 PI. ix., figs. 54 to 57; pi. xiii., figs. 151, 152, 153. 



This species occurs in abundance in the coastal districts 

 of New South Wales, and extends to the far north of Queens- 

 land. In Victoria it appears to be rare. The size ranges 

 from 10 to 16 mm. ; and Queensland specimens are usually 

 smaller than those from New South Wales. 



Perhaps the most typical form is that shown as fig. 56. 

 Oh the prothorax there are frequently seven disconnected 

 black spots, but often two of these on each side are connected 

 together, sometimes three on each side are so connected, and on 

 a specimen (fig. 57) in the National Museum, Melbourne they 

 are all connected ; this specimen also has the black markings of 

 the elytra greatly extended. On an occasional specimen there 

 are nine prothoracic spots. On each elytron there are usually 

 five disconnected spots, with an additional transverse one 

 connected with the suture towards the apex ; but often two 

 or more of the spots are joined together. The spots on the 

 pygidium vary in number from three to seven. 



The trisinuation of the base of the prothorax is less pro- 

 nounced than in many other Getonides, but Kraatz was cer- 

 tainly incorrect in describing the base as "fere rectilinea" in 

 his generic diagnosis of Polystigma. 

 G 



