DEEMAPTEHA SALTATOEIA. 53 



Male. Blackish-ferruginous, slender. Head and prothorax with 

 three very slight keels. Head a little shorter than the prothorax; tip of 

 the vertex conical; front oblique, with four slight diverging keels. Eyes 

 ferruginous, elongate-oval, oblique. Antennas lanceolate, slender, as long 

 as the head and the prothorax together. Prothorax flat above; fore border 

 and sides straight ; hind border slightly rounded. Pectus, two stripes on 

 the abdomen and under side of the latter tawny. Hind femora as long as 

 the abdomen, reddish beneath; hind tibiae shorter than the hind femora, 

 with two rows of minute spines above. Fore wings shorter than the body. 

 Hind wings cinereous, blackish at the tips, shorter than the fore wings. 

 Length of the body 12 lines ; expansion of the fore wings 20 lines, ^- 



The colour distinguishes it from 0. fumosa and from O. tseniata, and 

 the structure from O. pisciformis. The prothorax is broader than that of 

 O. galeata. 



a. Java. From Mr. Argent's collection. 



Opomala tenebrosa. 



Fceni. Picea out ferruginea, subcarinala, substriata; caput fastigio 

 piano brevi-conico, fronle fulva obliqua nigro conspersa ; antenna 

 lanceolate, capite duplo longiores ; femora postica abdomini aqui- 

 longa ; alee postica cinereo hi/alince, apice nigricanles. 



Female. Piceous or ferruginous, slender, slightly compressed. Head 

 and prothorax with a very slight middle keel and with a few very slight 

 longitudinal ridges. Tip of the vertex flat,ishort-conica] ; front tawny, 

 oblique, speckled with black, with four well-defined diverging keels; inner 

 keels united near the tip of the vertex. Antennas flat, lanceolate, about 

 twice the length of the head. Prothorax with a very slight keel on each 

 side ; fore border hardly rounded ; hind border slightly rounded. Hind 

 femora as long as the abdomen. Hind tibiae a little shorter than the hind 

 femora; spines stout, of equal size. Fore wings with irregular and very 

 minute areolets ; those towards the tips larger, elongated and regular. 

 Hind wings cinereous, hyaline, blackish at the tips; veins black, pale green 

 or yellowish at the base and along the interior border. Length of the body 

 14 lines; expansion of the fore wings 24 lines. 



Yunan. In Dr. Auderson's collection. 



Page 520. 

 Genus XIPHOCERA. 



In America the first group includes emarginata (= inclarata), tri- 

 lineata, funesta, auripenuis, jucunda and plagiata. The last species differs 

 slightly from the rest, the prothorax not being narrower in front. 



The second group (basalis and elegans) differs from the first by the 

 much crested prothorax, and perhaps should be removed to Tropinotus. 



The two Asiatic species differ widely from those of America, and 

 perhaps should be transferred to Opomala. 



T 



