226 Mr. J. O. Westwood's Description of some 



lateralibus munitum. Palpi labiales 4-articulati ; articulo 

 Imo longo, 2do breviori crassiori, duobus ultimis gracilioribus 

 subaequalibiis. Antcnnce breviores, subfiliformes, articulo 

 Imo longo, 3tio longissimo. 

 Collare coniciun dorso in medio piano, angulis posticis rotundatis. 

 Metathorax obconicus postice subtruncatus, angulis posticis 

 baud productis. Abdomen segmentis quatuor basalibus sub- 

 sequalibus ; Imo et 2do nitidis, Isevibus, reliquis obscurioiibus. 

 Alee breves, anticae vix thorace longiores ; cellula unica mar- 

 ginali apice hand appendiculata ; cellulisque quatuor sub- 

 marginalibus ; Ima majori, (in medio ad apicem appendiculata,) 

 venam primam recurrentem excipiente ; 2da parva, antice' 

 attenuata ; 3tia subquadrata et venam secundam recurrentem 

 versus basim excipiente ; 4ta ad apicem alae currente. Pedes 

 5 elongati, omnino inermes et ciliis destituti. Tarsorum 

 articulo penultimo simplici. Ungues in medio subtus dente 

 parvo instructi. 



It is difficult to speculate on the habits of this interesting 

 insect. The entire absence of cilise in the legs might lead to the 

 idea that it was a parasite ; but we now well know that this cha- 

 racter offers no criterion as to the working or parasitic habits of 

 the fossorial Hymenoplera. In the aberrant species of Sjyhex, S. 

 lohata, (^'C. we find very strongly ciliated feet, and in the still 

 more closely allied types of the genus Chlorion (C. covipressiim, 

 ^c.), the legs, although not strongly ciliated, are compensated by 

 the dilatation of the penultimate tarsal joint, and by the produced 

 angles of the preceding joints. The type of Chlorion is well 

 ascertained to attack the cock-roaches, which it buries, as the 

 support of its progeny. The slightly produced clypeus and the 

 short strong dentate mandibles of Aphelotnma, are other charac- 

 ters which prove a distinct economy from that of the true species 

 of Chlorion. 



The only species of Aphelotoma which I have hitherto seen is 

 a native of Van Diemen's Land, and has been communicated to 

 me by Mr. Ewing. 



Aphelotoma tasmanica, Westw. 



Nigra, pedibus nifis ; alisfuscis, anticis fascid medid albd. 



Long. Corp. lin. 4|, expans. alar. lin. 6. 



Habitat in Terra Van Diemenii. 



In Mus. nostr. Communicavit Dom. Ewing. 



