119 



extending from each shoulder to near the apex (fig. 3) ; 

 frequently on this form each vitta has an inner projection at 

 the basal third (fig. 4). One specimen near this form has the 

 median vittae joined at the apex, with dark sutural and 

 marginal markings, so that when viewed from behind the tip 

 of the suture appears to be the starting-point of five longi- 

 tudinal vittae (fig. 5). This specimen agrees well with the 

 description of vittata. 



On the variety named mediopicta (32) the elytra are black, 

 with the extreme base, the basal margins, suture (except 

 posteriorly), and a dilated postmedian space (on the suture), 

 more or less reddish. This is perhaps the least constant of all 

 the forms, and it is abundant in the Northern Territory. 

 Frequently the postmedian blotch is split up into two by the 

 suture being dark throughout. (^"5) One such specimen has 

 most of the prothorax and a considerable portion of the head 

 infuscated. It, and one other, are the only specimens I have 

 seen with those parts not entirely pale. Frequently the post- 

 median spot has two lateral extensions on each elytron (fig. 8), 

 and these may become conjoined laterally so as to enclose a 

 black spot (fig. 9). Or the suture may have a fairly wide 

 space at the base pale, and the red rapidly narrowed till it 

 disappears about the middle (fig. 10). This form naturally 

 leads to one in which the elytra at* first appear to be entirely 

 dark, but on examination the base and basal half of the sides 

 are seen to be very narrowly reddish (fig. 11). 



Most of these forms are represented by an abundance of 

 specimens in the Museum, but in addition there are many 

 other individual variations. One of the most interesting of 

 these appears to have the elytra entirely black, but on examina- 

 tion some parts are seen to be darker than others, these darker 

 parts consisting of spots as on the typical form. Its head and 

 prothorax also are deeply infuscated over most of the surface. 

 Its scutellum, the whole of its under-surface,^'^^^ and the major 

 portion of the legs are black. 



Rhyparida australis. Boh. (formerly Typophoriis). 

 Mcirsaevs simplex, Clark. 

 PL v., figs. 15-17; pi. viii., fig. 168. 



This species was referred by Boheman to Typophor\n. 

 Lefevre ^^s) excluded it from that genus, but without assigning 



(32) The type (fig. 6) is in the South Australian Museum. 



(33) The variety (fig. 7) described by Jacoby as fiilvoplagiata. 



(34) I have seen no other specimens with the scutellum and 

 under-surface black. 



(35) Cat., p. 132. 



