Longicornia Malayana. 347 



Xyaste fumosa. 



X. nigrescens ; elytris basi ferrugineis ; medio antennarum 

 testaceo. 



Hab. — Sarawak. 



Blackish-brown, with short scattered hairs, the b;)se of the 

 elytra ferruginous ; head and prothorax with few scattered punc- 

 tures, the latter with the pubescence having silvery reflexions in 

 certain lights ; elytra rather elongate, seriate-punctate, the punc- 

 tures deep and closely arranged, especially at the base ; body 

 beneath and legs blackish ; the first three joints of the antennae 

 black, the three following testaceous, the rest gradually becoming 

 darker, the third joint considerably shorter than the scape. 



Length 3g lines. 



AsTATHEINiE. 



The only author who has paid any attention to Astalhes and its 

 allied genera, M. J. Thomson, in his earlier work (Arch. Ent. i. 

 p. 45), formed of them a " groupe" apart, named Tetrnophlhalmites, 

 to which, however, he also attached Telraopes, Tetrnps and Tetra- 

 glenes, on account of their divided eyes. In the " Essai " (p. 66) 

 they formed a "division" of the " sous-groupe" Apomecynitce, 

 under the name of Tetraopesitce, with the addition of the genus 

 Phcea. In the more recent " Systema," (p. 1 17) they became a 

 " sous-division" of the OberettcB, which is itself a " division" of the 

 " groupe" Amphionyc/iitte. With the exception of Serixia, which 

 I have already referred to the Saperdincc, and Clconaria, which is 

 unknown to me, this subdivision corresponds vvith the Astatheincc 

 as here limited. 



The most remarkable of the characters of the Astatheince con- 

 sists in having the metasternum projected forwards between the 

 intermediate coxae, so as to cover more or less completely the 

 ventral surface of the mesosternum — the vertical portion only 

 being visible. Unfortunately this character is present only in 

 Astathes, Euslalhes and Tropimetopa,* and it disappears entirely 

 without any gradual modification in the remaining genera. Ano- 

 ther character is the broad lobe found at the base of each of the 

 claws ; these appendiculate claws show thennselves again in the 

 PhijIceci'iiKB. There is also another structural peculiarity to be 

 noticed in the mentum and lower lip. These two are closely 

 connected, so that it is difficult to trace any line of demarcation 



* And in the African genus Ei'plwra. 



