316 . D. SHARP 



gether. Anterior coxae very large and prominent. Middle cox 33 

 contiguous. Metapleura large, broad at the anterior, narrow at 

 the posterior, extremity; its epimeron rather large. Hind coxae 

 extremely broad. Hind legs very thick, the front margin of their 

 femora semicircular, the tibiae extremely short, and much di- 

 lated; their tarsi slender, with rather long, slender, equal claws. 

 Hindbody very short on its ventral face, and with the indivi- 

 dual segments very short, the sutures deep and distinct; the 

 segments are apparently five in number, the penultimate one 

 being largely membranous at its hind margin; on dissection ho- 

 wever, seven ventral plates are found, the basal one rather large, 

 and quite membranous, the 2. nd one very large and semimembra- 

 nous. Abdominal stigmata placed as in the ordinary form of 

 Melolonthini, but owing to the abbreviation of the ventral plates, 

 the last stigma is quite concealed by the overlapping edge of 

 the ventral plate of the preceding segment; pygidium abruptly 

 deflexed, acuminate. 



Systellopus obtusus n. sp. Nigerrimus, subopacus, thorace ely- 

 trisque sericeo-opalescentibus; capite dense fortiterque punctato; 

 thorace sparsim subtiliter punctato; elytris fere impunctatis, obso- 

 lete striatis, sed stria suturali magis distincta; corpore subtus parce 

 nigro pubescente; elytrorum angulo apicali suturali obtuso. Long. 

 16 1 / 2 millim. 



The two specimens I have seen of this species, are both I be- 

 lieve males; one of them I have ascertained by dissection to be 

 of that sex, and the other shews no external difference that I can 

 consider to be sexual; they are from different sources, one of them 

 being labelled North-west Australia, the other West Australia. 



Systellopus validus n. sp. Nigerrimus, subopacus, thorace ely- 

 trisque sericeo-opalescentibus; capite dense } fortiterque punctato; 

 thorace sparsim subtiliter punctato; elytris fere impunctatis, obso- 

 lete striatis, sed stria suturali magis distincta; corpore subtus parco 

 nigro-pubescente ; elytrorum apice sinuato, angulo suturali recto. 

 Long. 21 miUim. 



