248 



elytra strongly striated posteriorly, and hind tibiae of male 

 wider and otherwise different at apex. In build it is close to 

 infcrco.rcdis, but the abdomen is very different. The female 

 differs from the female (the only sex known) of scitithi in 

 having the elytra longer, less conspicuously wider than the 

 prothorax, with larger punctures, ' more of which are trans- 

 versely confluent, and striation even deeper on apical slope. 

 On one male there is a fairly distinct median line on the head, 

 but from another male and from a female it is entirely absent. 



Geloptera basiventris, n. sp. 

 PI. vii., fig. 94. 



(S . Flavo-castaneous, appendages flavous. 



Ifrad with rather dense and well-defined but not very 

 large punctures, becoming irregular between eyes, and minute 

 on front of clypeus. Prothorax with sides feebly dentate or 

 undulated about middle, surface somewhat uneven ; with dense 

 and fairly large punctures, becoming crowded on sides. Elytra 

 much as those of preceding species, except that the punctures 

 are somewhat larger. Flanks of prosternum with distinct and 

 rather numerous punctures. Abdomen with a conspicuous, 

 double, oblique ridge on each side of intercoxal process, the two 

 connected by a single ridge, fourth segment as long as second 

 and third combined, fifth with a wide and deep median fovea, 

 open posteriorly. Femora unarmed : hind tibiae rather thin 

 and gently curved, not very wide at apex. Length, 4J-5 mm. 



9 . Differs as in preceding species. 



T/rt^. —.Queensland: Endeavour River. Type, in Macleay 

 Museum : co-type, I. 3642, in South Australian Museum. 



In general appearance strikingly close to the preceding 

 species, but readily distinguished by the abdomen of the male, 

 each side of the intercoxal process of which has a double ridge. 

 On interco.rahs there is a strong ridge on each side, but each 

 is single, and from the side appears to end in a conspicuous 

 triangle; that species also has not the conspicuous apical fovea 

 of the present species. 



On the type there is scarcely any metallic gloss, but on 

 three females the upper-surface has a distinct bluish gloss, 

 becoming fainter on the under-surface, but on one female the 

 pronotum is conspicuously metallic ; the knees are lightly 

 infuscated ; on the male the tip of the antennae only is infus- 

 cated, on the females the tips of the three apical joints are. 

 On the male the median line of the head is feebly impressed, 

 but from the females it is entirely absent. The front tarsi 

 of the male are missing, but the basal joint of the middle pair 

 is distinctly inflated. 



