320 REVISION OF THE CICINDELID^ OF AUSTRALIA, 



ii. Ventral segments impunctate. Prothorax with lateral 



carina extending backward almost to base 



M. blackburni Fleut. 



hh. Elytra punctate on basal half, puncturation obsolete towards 

 apex. (Prothorax with lateral carina extending backwards 



to posterior transverse impression) M. murchisoni Fleut. 



DD. Species with apex of elytra widely tes- f M. australis Chaud. 



taceous \ M . helmsi Blackb.* 



AA. Elytra with sides of a more or less clear testaceous or brownish colour. 

 Elytra punctate or wavy-rugose-punctate. (Winged species). 

 k. Prothorax with lateral carina not extending backwards to posterior 

 transverse impression. 



I. Abdomen with all the segments testaceous on sides. Male with left 



mandible bifurcate at apex M. crucigera Macl. 



II. Abdomen with two basal segments metallic laterally. Male with left 



mandible of normal form, 3-dentate. 

 m. Prothorax with posterior transverse sulcus decidedly terminated at 

 place of lateral carina, not reaching sulcus of pro-episterna. 



Antennae with basal joints clear testaceous M. intermedia SI. 



mm. Prothorax with posterior transverse sulcus continued in a more 



or less distinct course laterally to the extreme border of the 



pronotum opposite the sulcus of the pro-episterna. Antennae 



with four basal joints fusco-maculate. 



n. Metepisterna lightly and widely obliquely concave. Elytra with 



inflexed border not excised opposite third ventral segment 



M. basalis Macl. 



nn. Metepisterna with a deep concavity. Elytra with inflexed 



border decidedly excised opposite third ventral segment 



M. bostocki Cast. 



kk. Prothorax with a strong lateral carina extending from anterior angle 

 backwards past posterior transverse impression. Elytra with wavy- 

 rugose-punctate sculpture. 

 o. Elytra with clear subtestaceous margin dilated inwards at about basal 



third M. australasice Hope. 



oo. Elytra green with narrow obscure brownish lateral margin 



,M. scapularis Macl. 



Megacephala pulchra Brown. 



Dr. W. Horn, of Berlin, kindly sent me a specimen (Q) of 

 Tetracha pulchra Brown, " identical with type." The following 



* M. helmsi is the only species I have not seen. 



