170 
MR. J. S. BALY ON SOME GENERA 
B. Apical margin of pygidium more or less deeply emarginate. 
a. Apex of pygidium faintly emarginate .... 10. perplexa. 
act. Apex of pygidium trifid, the middle lobe elongate, its 
apical surface tuberculate 8. brunnea. 
aaa. Apex of pygidium trifid, the middle lobe only slightly 
produced 4. ambusta. 
1. Pseudocophora Buquetji, Guer. 
Galeruca Buquetii, Guer. Voy. Coquille, 1830, p. 143. 
Oblongo-ovata, postice paullo ampliata, convexa, rufo-fulva aut fulva, 
pectore, abdomine pedibusque posticis quatuor nigris, antennis pal- 
lide flavis ; tborace profunde transversim sulcato ; elvtris postice 
ampliatis, convexis, infra basin in ? leviter transversim depressis, 
distincte subseriato-punctatis, punctis pone medium minus forciter 
impressis, confuse dispositis ; rufis, basi late limboque externo 
nigris. Long. 2f-3 lin. 
Mas. Elytris infra basin fovea magna communi, fundo quadridentata 
instructis ; abdominis segmento anali trilobato, lobo intermedio 
piano. 
Fem. Abdominis segmento anali apice rotundato, medio abrupte angu- 
lato-emarginato. 
Sab. Java. 
Antennse pale flavous ; eyes prominent, black. Thorax nearly 
twice as broad as long ; sides nearly straight and diverging from 
the base to beyond the middle, thence obliquely converging to the 
apex, anterior angle with an obtuse oblique tubercle ; disk deeply 
sulcate transversely, the sulcation usually entire, rarely inter- 
rupted in the middle. Elytra oblong, dilated posteriorly, convex, 
slightly depressed in the $ below the basilar space, distinctly 
subseriate-punctate, the spaces between the rows of punctures 
more or less distinctly thickened ; the punctures on the hinder 
disk finer and arranged without order. In the <5 below the 
basilar space is a large common fovea, surrounded by a thickened 
margin, its surface armed with two pairs of teeth, the anterior 
pair thickened at the base, their apices deflexed and poste- 
riorly produced, the hinder one flattened, truncate, and abruptly 
deflexed towards the suture ; these teeth in some specimens are 
concolorous with the surface of the fovea, in others they are 
more or less fulvous ; the anterior pair in some instances are 
obsoletely bifid. 
