22 
ME. J. S. BALT ON SOME SPECIES OF GALERUCIN2E. 
Fcem. Abdominis segmento anali transversim emarginato, trilobato, lobo 
intermedio brevi, truncato, lobis lateralibus subacutis, apice incurvatis. 
Sab. Malay Peninsula, Singapore, Penang, Tringano, Malacca ; 
Borneo, Sarawak ; Sumatra {Wallace). 
This variable insect in point of coloration is, owing to the 
dilated apical joint of its antennae in the male and to the peculiar 
emargination of the anal segment of the abdomen in the female, 
one of the best defined species of the genus ; the formation of 
the anal segment of the abdomen will at once distinguish the latter 
sex from all others known to me of the genus. Aulacophora 
antennata , described in the present paper, is the only insect with 
which the male can be confounded ; in the male of A. antennata 
the body is larger and narrower, the dilated apical joint of its 
antennae is differently notched at the apex, and the intermediate 
lobe of the anal segment is concave, not plane as in A. luteicornis. 
The apical segment of the abdomen in the female of A. anten- 
nata is not emarginate. 
33. Aulacophora Stevensi. Anguste ovata, convexa, pallide flava, 
nitida, scutello nigro-piceo, oculis nigris ; thorace transversim sulcato; 
elytris tenuissime punctatis, basi extrema, sutura, apice, nee non linea 
submarginali, a basi fere ad apicem extensa, nigris. Long. 3|-4 lin. 
Mas. Antennarum articidis 3°-5 m incrassatis ; abdominis segmento anali 
trilobato, lobo intermedio oblongo-quadrato, profuude concavo. 
Fcem. Antennis filiformibus ; abdominis segmento anali apice sinuato. 
Sab. Ceylon ; India, Dinapore. 
Front impressed on either side with an oval fovea in the male. 
Antennte in the same sex with the second joint very short, tur- 
binate, the following three thickened ; the third compressed, tri- 
gonate, its antero-external angle very acute ; the fourth more 
strongly thickened, oblong-ovate ; the fifth slightly compressed, 
subtrigonate, its outer edge armed near the apex with a short 
acute tooth, its upper surface excavated. 
34. Aulacophora Duboulayi. Anguste oblonga, postice paullo 
ampliata, convexa, flava aut fulva, nitida, collo ntrinque mgro, tibiis ad 
apicem tarsisque nigro-piceis ; thorace transversim sulcato; elytris 
tenuissime, subcrebre punctatis, viridi-seneis. Long. 3-3j lin. 
Mas. Antennarum artieulis tertio ad sextum dilatatis, fronte utrinque 
intra oculum foveolata; abdominis segmento anali trilobato, lobo in- 
termedio oblongo-quadrato. 
Fcem. Antennis filiformibus nigris, basi fulvis ; abdominis segmento 
anali apice leviter sinuato. 
Sab. Western Australia {Duboulay). 
