10 
MB J. 8. BALE ON SOME SPECIES OF GALERUCINiE. 
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. 
-Fern. Abdominis segmento anali apice obtuso. 
j Hah. Batchian ; Mysol (Wallace) . 
Antennae slender, filiform, entirely, or with the apices of the 
six or seven outer joints alone, fuscous. Thorax about one half 
broader than long ; sides parallel and slightly sinuate from the 
base to beyond the middle, thence slightly converging towards 
the 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. 
Fcem. Abdominis segmento anali apice obtuso. 
Hal. New Guinea ( Boisduval ) ; Borneo, Sarawak ; Celebes ; 
Bouru (Wallace). 
Antennas 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, differing in the form 
of the thorax, the sides of which iu the present species are 
