10 



MB J. 6. BALY ON SOME SPECIES OF GALERUCIN^. 



9. AuLACOPHORA iNSTABiLis. Oblongo-ovata, postice ampliata, 

 flava, nitida, antennis extrorsum fuscis ; thorace transversim sulcato, 

 sulco fere recto ; elytris convexis, infra basin leviter transversim de- 

 pressis, nigris, fascia interrupta lata prope medium, interdum inter- 

 rupta aut extrorsum abbreviata, flava. Long. 4 lin. 



Mas. Abdominis segmento anali trilobato, lobo intermedio oblongo, 



concavo, longitudinaliter sulcato. 

 FcEm. Abdominis segmento anali apice obtuso. 



Hah. Batcliian; Mysol (Wallace). 



Antennse slender, filiform, entirely, or witb. tlie apices of tbe 

 six or seven outer joints alone, fuscous. Thorax about one half 

 broader tlian long ; sides parallel and slightly sinuate from the 

 base to beyond the middle, thence sliglitly converging towards 

 tbe apex ; disk deeply impressed with a transverse sulcation. 

 Elytra dilated posteriorly, convex, slightly flattened along the 

 suture, and faintly excavated behind the basilar space ; nitidous, 

 very minutely punctured. 



10. AuLACOPHORA BoiSDuvALi. Ovata, postice ampliata, convexa, 

 rufo-fulva aut fulva, labro nigro-piceo, nitido, antennis flavis ; tibiis 

 plus minusve tarsisque piceis, elytris nigris ; thorace profunde trans- 

 versim sulcato. Long. 4-5 lin. 



Var. A. Labro rufo-fulvo. 



Mas. Abdominis segmento anali trilobato, lobo intermedio transverso- 



subquadrato, piano. 

 JFcem. Abdominis segmento anali apice obtuso. 



Hah. l^ew Guinea (Boisduval) ; Borneo, Sarawak ; Celebes ; 

 Bouru (Wallace). 



Antennae slender and filiform in either sex ; nearly equal to 

 the length of the body in the male, shorter in the other sex ; 

 labrum nigro-piceo us, rarely concolorous with the upper face. 

 Thorax with its sides sinuate and slightly diverging from the 

 base to beyond the middle, thence obliquely rounded and con- 

 verging towards the apex ; upper surface smooth, finely but not 

 closely punctured ; discoidal sulcation nearly straight, deeply 

 impressed, more deeply so on the sides. Elytra much broader 

 than the thorax, their sides nearly parallel anteriorly, abruptly 

 dilated posteriorly, convex, slightly excavated transversely below 

 the basilar space, minutely punctured. 



Nearly allied in coloration to A. lata, diff"ering in the form 

 of the thorax, the sides of which in the present species are 



