394 Mr. G. J. Arrow on LumeUieorn Bietles. 



placed in the genus Ath>/reu^ in the Munich Catalogue. I 

 have been able to compare the two types by the kindness of 

 Dr. Adam Boving, of tlie Copenhagen Museum. 



I have found it necessary to change the name of Hybaluis 

 gazella, Raffray, to //. rafrayi^ the name gazella iiaving 

 been applied by Mulsant as long ago as 1842 to a variety of 

 //. dorcas, F. { = H. glahmtus, F.). 



Mr. H. Maxwell Lefroy has sent me specimens from the 

 Punjab of a very remarkable little beetle which I have recog- 

 nized as belonging to the genus Dgnamopus of Semenow, 

 and apparently to the same species as that described by him 

 from Tiu-kestan [Dynamopus athleta, Sem.). The author, 

 however, has not correctly described the structure of the head 

 and mouth-parts, having evidently not dissected the latter. 

 The mandibles are not, as he supposed, concealed, but very 

 prominent, as in the whole of the beetles of the present group 

 of subfamilies ; but, quite unlike any other beetle known to 

 me, Dynamopus has tlie mandibles firmly consolidated with 

 the sides of the head, where they form the lateral processes 

 described by Semenow. So extraordinary is this fixation 

 that without dissection it was an almost inevitable assumption 

 that these processes were mere outgrowths and that the true 

 mandibles were hidden within the mouth ; but, having care- 

 fully removed all the mouth-appendages from one of the 

 two specimens sent to me, this is conclusively disproved. 

 The fixed mandibles have a slight upward curvature and 

 are blunt and without teeth. Although their original func- 

 tion is obviously lost, it must be supposed that they have 

 acquired some other use, for they appear to have undergone 

 no diminution. 



I have transferred the genus to the Orphninse, to which its 

 characters point rather than to the Hybosoriiiae. The maxillae 

 are very well developed, with a long but not corneous outer 

 lobe, and the inner lobe highly chitinized and armed with 

 very strong and sharp teeth. The labium is soft, with a 

 bilobed ligula; the labrum rather fleshy, prominent, bilobed, 

 and studded with very strong bristles. The antennal club is 

 not telescopic, as in the Hybosorina?, but there appears to be 

 no coxal stridulating-organ, a feature of most of the Orphninse. 

 The remarkable fimbriate spurs of the middle and hind tibiae 

 seem to indicate a relationship with the Ochodeeinaj, in which 



