170 



MR. J. S. BALT ON SOME GENERA 



B. Apical margin of pygidium more or less deeply emarginate. 

 a. Apex of pygidium faintly emarginate .... 10. perplexa. 

 aa. Apex of pygidium trifid, the middle lobe elongate, its 



apical surface tuberculate 8. hrunnea. 



aaa. Apex of pygidium trifid, the middle lobe only slightly 

 produced 4. ambusta. 



1. PsEUDOCOPHOEA BuQiJETTi, Guer. 



Galeruca Buquetii, Guer. Voy. Coquille, 1830, p. 143. 



Oblongo-ovata, postice paullo ampliata, convexa, rufo-fulva aut fulva, 

 pectore, abdoraine pedibusque posticis quatuor nigris, antennis pal- 

 lide flavis ; thorace profunde transversim sulcato ; elytris postice 

 ampliatis, convexis, infra basin in ? leviter transversim depressis, 

 distincte subseriato-punetatis, punctis pone medium minus fortiter 

 impressis, confuse dispositis ; rufis, basi late limboque externo 

 nigris. Long. 2|-3 lin. 



Mas. Elytris infra basin fovea magna communi, fundo quadridentata 

 instructis ; abdominis segment© anali trilobate, lobo intermedio 

 piano. 



Fern. Abdominis segmento anali apice rotundato, medio abrupte angu- 



lato-emarginato. 

 Hah. Java. 



Antennae 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 <S 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 sutnre ; 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. 



