i88i.] 275 



NEW SPECIES OP LONGICOKN COLEOJPTEEA ALLIED TO 

 COLOBOTHEA. 



BY H. W. BATES, P.L.S. 



The following descriptions refer to an interesting group of 

 Lamiidce, peculiar to Tropical America, which are closely allied to 

 Astynomus, but differ in their narrow, laterally-compressed form of 

 body, and the presence of a carina on each elytron, separating the 

 vertical sides (epipleurse) from the dorsal surface. 



Stxchtzopus cancellatus. 



S. geometrico affinis et similis, sed differt elytrorum signatures. Purpureo- 

 vfuscus, sericeo-nitens, capite thoraceque flavis, Mo vittis duabus frontalibus, hoc fascia 

 lata dorsali fuscis ; elytris marginibus (basi exceptis) fasciisque duabus, angustis, 

 \ flavis, apice sinuato-truncatis angulo exterior 'i spino so ; antennis piceo-fuscis, arti- 

 \culis 4 t0 et 6 t0 basi albis. Long. 4£ lin., $ . 



Differs from 8. geometricus, of Nicaragua, chiefly in the fewer 

 yellow lines of the elytra, which are so placed that each elytron may 

 be said to have four large, square, silky-brown spots, separated from 

 each other and the margins (except at the base) by narrow pale yellow 

 lines. The thorax is much shorter than broad, with the sides 

 moderately and regularly rounded in the middle. The lateral carina 

 pf the elytra is well marked near the base, but becomes obliterated 

 before the middle. The ovipositor of the ? projects to the length of 

 about one-twelfth of an inch beyond the elytra, and its dorsal plate is 

 ivery acute at the tip, sharply grooved down the middle, and margined 

 on the sides. 



Tungas of La Paz, Bolivia (Buckley). 



Synchyzopus ljetus. 



Purpureo-fuscus, sericeo-nitens , capite antice lineistribus (quarum niediana usque 

 %d rerticem continuataj thorace fascia angusta prope marginem anterior em, alteraque 

 latiori ( medio interrupta) juxta marginem posterior em, elytrisque utrinque maculis 

 \uatuor, pallide flavis ; antennis nigris, articulis S to , 4$° , et 6 t0 basi albis; corpore 

 mbtus medio griseo, pectore utrinque macula alba. Long. 4J lin., $ . 



Very similar in form to S. geometricus and cancellatus, but dif- 

 iering widely in the markings of the elytra. These consist, on each, 

 f four pale yellow spots or short fasciae, viz. : one rounded on the 

 lisc towards the base, a fascia near the middle, and a second fascia 

 onsiderably beyond the middle (neither reaching the suture nor the 

 nargin), and a triangular spot at the apex (broadest on the suture). 

 Che ovipositor differs from that of S. cancellatus by wanting the 

 central groove of the upper segment. In the specimen described it 

 S red and shining. 



E. Moronas, Equador (Buckley). 



