Anatomy of the Male Genital Tithe in Coleojotera. 547 



Family BUPRESTIDAE. 



Forms examined : UueJiroma goliath Lap., Pauama. 

 Chrysodema anroforfcata Guer., New Guinea. Gyphogastra 

 spp. ? New Guinea. Pohfoothris quadricollis, Madagascar. 

 Acmaeodera flavofasciata P. and M., Pyrenees. Stigvio- 

 dera macularia Don., Australia. Belionota ivalkeri Wat., 

 New Guinea. 



Figs. 160, 161 and 161a PI. LXVII. 



Glirysodema anrofoveata (PI. LXVII fig. 160). 



The median lobe consists of a strong chitinous dorsal plate, fiat, 

 almost parallel-sided, and pointed at apex, with a deep groove (r<) 

 running down each side of the ventral aspect ; this ventral face is 

 membranons, with the median opening some distance from the apex, 

 and the base prolonged into two short median struts. Tegmen strong, 

 highly chitinised and flattened horizontally, with the lateral lobes and 

 basal-piece consolidated into one piece. Lateral lobes consolidated 

 for a short distance from their base on dorsal aspect, and for some 

 distance on the ventral aspect ; long, nearly parallel-sided, their 

 rather slender tips rounded, and bearing short spines and a couple 

 of hairs. Along the inner sides of the lateral lobes runs a chitinous 

 projection which fits into the groove ('<) on the median lobe and acts 

 as a guide when this moves in and out of the tegmen. Internal sac 

 undifferentiated. 



In fig. 160 the free apices of the lateral lobes are made to appear 

 too short and blunt, and this defect is exaggerated by the exsertion 

 of the median lobe. 



Polyhothris quadricollis (^\. LXVII figs. 161 and 161a). 



This is the same type as the last. Median lobe consisting of a flat 

 dorsal plate, widest at the base and graduating to a point at apex, 

 with a pair of median struts at base ; median orifice on ventral aspect 

 near tip. A little behind the median orifice there is a slender chitin 

 rod attached to the ventral membrane, and projecting into the lumen 

 of the median lobe, to which muscles are attached. Lateral lobes 

 flattened, curving u]d to a point on the inner side of the apex, with 

 basal-piece consolidated to lateral lobes. The coadaptation between 

 lateral and median lobes is not so complete as in Chrysodema. 

 Internal sac undifi"erentiated. 



The Buprestidae differ from the Elateridae by the con- 

 solidation of the basal-piece to the lateral lobes and by the 

 beautiful coadaptation between the lateral and median 



