XYLOBAOTS. 41 



costse strong ; the interstices divided into quadrangular spaces by 

 well-marked transverse costse, the spaces slightly transverse near 

 the base ; towards the apex the costae are closer together. 



Xylobanus regularis. 

 (Hate X. fig. 8.) 



Fuscus, depressus, opacus ; thorace flavo, septcmareolato, scu- 

 tello flavo ; elytris parallelis, depressis, quadricostatis, interstitiis 

 regulariter fortiter foveolatis ; femoribus basi lusco-flavis. $ . 



Long. 3j lin. 



Hah. Dorey, New Guinea ( Wallace). 



Thorax dull yellow, a little broader than long, rounded in front, 

 constricted behind the middle : the costa dividing the lateral areolets 

 not very distinct. Elytra parallel, scarcely broader than the thorax ; 

 the four costae strong; the interstices regularly divided by well- 

 marked transverse costae, the spaces slightly transverse. The base 

 of the femora and the extreme base of the tibiae obscure yellow. 

 Sterna reddish yellow. 



Xylobanus privatus. 



(Plate X. fig. 6.) 



Fuscus, parallelus ; thorace, scutello elytrisque ochraceis ; thorace 

 medio postice areola angusta ; elytris quadricostatis, interstitiis 

 uniseriatim foveatis. $ . Long. 4| lin. 



Hah. Java {J. C. Bowring, Esq.). 



This only differs from X. fastidiosus above described in the thorax. 

 This is shorter and more rounded in front, and instead of having 

 seven areolets, it has only one narrow mesial one, which is joined to 

 the anterior margin by a carina. 



It seems very probable that this may be a variety of X. fastidiosus. 



Xylobanus senex. 

 (Plate X. fig. 7.) 



Fusco-niger, opacus ; thorace fusco, medio postice areola angusta, 

 antice carinis tribus ; elytris quadricostatis, interstitiis uniseriatim 

 foveatis, dimidio basali sordide testaceo, foveis atris. $ . 



Long. 4 lin. 



Hah. Borneo ( Wallace). 



This differs from X. hum His in the thorax, which is shorter and 

 more obtuse in front, and instead of having seven areolets, has only 

 five, the mesial posterior one being extremely narrow. 



It is very probable that this may only be a variety of X, Inn/til is. 



