578 Lo'iigicornia Malayana. 



strongly marked carina ; body beneath nearly glabrous, 

 very glossy dark blue ; legs brownish-black, very glossy ; 

 antennae black, closely covered with a dull blackish pile. 

 Length 3j lines. 



Prothemin^. 



The insects of this subfamily are distinguished by 

 having very distinct epipleurae to their elytra throughout 

 their whole length, but tho other characters, except the 

 marked elongation of the hind-legs, are less constant. 

 They are all of an intense black colour, more or less 

 relieved with bands or stripes formed by a dense whitish 

 pubescence. They are natives of Asia, but have not 

 been found in India, although two species are known 

 from North China; nor have they been met with south 

 of Borneo. 



Oenera. 



Basal segment of the abdomen very large. 



Outer joints of the antennas broadly dilated 



in both sexes i • • Euryarthrum, Blanch. 



Outer joints of the antennae very slightly di- 

 lated, especially in the males Prothema, Pasc. 



Basal segment of the abdomen of the ordinary size Mesophxa, n. g. 



EUEYAETHRUM. 



Euryarthrum, Blanchard, Hist. Nat. Ins. ii. 149 (1845) . 



Blemmya, Pascoe, Trans. Ent. Soc. ser. 2, iv. 42 (1856); 

 Lacordaire, Gen. viii. 526.* 



Caput antice productum, verticale; mandibidce sub- 

 elongatae. Oculi supra late emarginati. Antcnnce bre- 

 viusculfe, validje ; scapo subcylindrico ; articulo tertio 

 scapo aequali, 4 et 5 conjunctim haud longioribus, 6-10 

 fortiter unilateraliter dilatatis, ultimo appendiculato. 

 Palpi breves, articulo ultimo cylindrico. Prothorax 

 subrotundatus, antice angustior. Elytra lata, supra 



* M. Lacordaire, as well as M. J. Thomson, rejects the name here 

 adopted in consequence of Eunjarthron having been previously used by 

 M. Agassiz. But changing for anything less than an absolute identity 

 would be a rule without limits, and must lead to perpetual alterations, 

 creating a greater evil than the toleration of names similar but not 

 identical. 



