22 



MB. J. S, BALT ON SOME SPECIES OF aALERrCIN^. 



Fcem. Abdominis segmento anali transversim emargiuato, trilobato, lobo 

 intermedio brevi, truncato, lobis lateralibus subacutis, apice incurvatis. 



Hah. 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 

 emargiuation 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. Aiilacopliora 

 antennata^ described in the present paper, is the only insect with 

 which the male can be confounded ; in the male 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, nec non linea 

 submarginali, a basi fere ad apicem extensa, nigris. Long. 31-4 lin. 



Mas. Antennarum articulis 3''-5"^ incrassatis ; abdominis segmento anali 



trilobato, lobo intermedio oblongo-quadrato, profunde concavo. 

 F(£m. Antennis filiformibus ; abdominis segmento anali apice sinuato. 

 Hah. Ceylon ; India, Dinapore. 



Pront impressed on either side with an oval fovea in the male. 

 Antennae in the same sex with the second joint very short, tur- 

 binate, the following three thickened ; the tliird compressed, tri- 

 gonate, its antero-external angle very acute ; the fourth more 

 strongly thickened, oblong-ovate ; the fifth slightly compressed, 

 subtrigouate, its outer edge armed near the apex with a short 

 acute tooth, its upper surface excavated. 



34. AuLACOPHORA DuBOULAYi. Angustc oblonga, postice paullo 

 ampliata, convexa, flava aut fulva, nitida, collo utrinque mgro, tibiis ad 

 apicem tarsisque nigro-piceis ; thorace transversim sulcato ; elytris 

 tenuissime, subcrebre punctatis, viridi-aeneis. Long. 3-3j lin. 



Mas. Antennarum articulis tertio ad sextum dilatatis, fronte utrinque 

 intra ocuhim foveoiata ; abdominis segmento anali trilobato, lobo in- 

 termedio oblongo-quadrato. 



jPcem. Antennis filiformibus nigris, basi fulvis ] abdominis segmento 

 anali apice leviter sinuato. 



Hah. Western Australia (JDuboulay). 



