286. Mr. J. S. Baly on the Phytophaga. 



obsolete from thence to the apex ; uppei* surface somewhat closely and 

 deeply punctured, disk impressed on either side with a distinct fovea. 

 Elytra much broader than the thorax, sides parallel, apex broadly 

 rounded ; above very convex, somewhat closely punctured, humeral 

 callus subprominent, basilar space in each elytron boimded beneath by 

 a semicircular fossa. 



Genus Rhtpakida, 



Corpus oblongum aut subelongatum, convexum. Caput perpendiculare ; 

 mandibuUs apice emarginatis; antennis gracilibus, subfiliformibus, ex- 

 trorsum vix incrassatis ; imlpis gracilibus ; ocuUs oblongo-ovatis, intus 

 emarginatis aut sinuatis; epistoma distinctuni, antice emarginatum. 

 Thorax transversus, superne convexus, lateribus marginatis. Elytra 

 breviter sulohlonga aut ohlonga, superne convexa, punctato-striata, 

 apice rotundata, lateribus parallelis aut apicem versus pei-parum angus- 

 tatis. Pedes modice robusti, femorihus paidlo incrassatis, subtus rarius 

 dentatis; tihiis postei'ioribus extus ad apicem emarginatis; imguiculis 

 unidentatis. Prosternum oblongum aut elongatmn, antepectoris pro- 

 cessu antero-laterali subtrigonato, margine autico obliquo, angulo ex- 



• teriore ad angidum anticum thoracis extenso. 3Iesostermim subqua- 

 dratum aut oblongimi, apice paullo dilatatum, obtuse truncatum. 



Type, Rhyparida dimidiata, Baly. 



Rhyparida forms one of a group of genera (many as yet unde- 

 scribed) possessing in common a notch on the outer edge of the four 

 hinder tibise, near their apex. They may be divided into two sec- 

 tions, viz. one in which the claws are toothed, and a second in which 

 they are simply appendiculated ; of the first section, to which Rhy- 

 parida belongs, Typophorus is, I believe, hitherto the only cha- 

 racterized genus. Rliyparida (the species of which are natives of 

 Australia and the Eastern Archipelago) differs from the above- 

 named in the transverse thorax and in the different form of the 

 antero-lateral plate of the antepectus : this part in the older genus 

 has its anterior margin convex, and produced beyond the border of the 

 thorax ; in the present the same margin is oblique, and not ante- 

 riorly produced. 



Rhyparida dimidiata. 



R. oblonga, convexa, picea, subnitida ; antennarum basi elytrisque obscure 

 fill vis, his punctato-striatis, dimidio apicali nigro-piceis. — Long. 2-3 lin. 



Hah. Moreton Bay. 



Oblong, convex, eubnitidous, piceous. Head obscure rufo-piceoUs, 

 epistome transverse, middle of its apical margin produced upwards into 

 an acute tooth, sm'face ptmctured ; antennae filiform, equal in length to 

 the body in the male, shorter in the female, black, their base fulvous. 

 Thorax nearly twice as broad as long, sides roimded, narrowed in 



