OROETES.— -METACYCLA. 601 



middle narrowly flavous ; underside and the legs flavons ; the intermediate tibiae with a small notch near 

 the apex. 



Eab. Nicakagua, Chontales (Janson) ; Panama, Bugaba, David (Champion). 



The female differs from the male in the simple, not deformed, antenna?, these organs 

 having the basal two joints only flavous; the third joint is slightly longer than the 

 second, and the first joint is less thickened than is the case in the male insect ; and the 

 thorax is simply transversely sulcate on the disc and devoid of the tubercle. In all the 

 specimens before me the thoracic tubercle of the male has at its extremity a small 

 round impression. An example from Bugaba is figured. 



METACYCLA, 



Metacycla, Baly, Journ. Entom. i. p. 206 (1861). 

 Gastrogyna, Leconte, Proc. Ac. Phil. 1865, p. 210, 



The female of Metacycla differs from the male in the abdomen being enormously 

 developed and only partially covered by the elytra. The genus has hitherto contained 

 three species only — one from California, one from Mexico, and one from Guatemala ; 

 two others are now added. 



1. Metacycla sallaei. 



Metacycla sallei, Baly, Journ. Entom. i. p. 206 \ 



Eab. Mexico \ Oaxaca (Edge), Tehuantepec, Juquila, Chabao (Salle).— 1 Peku (coll, 

 Jacoby). 



Closely allied to M. marginata, but differing in the black thorax, and in the want of 

 a fulvous elytral margin and similarly-coloured spots on the abdomen of the female ; in 

 this sex the abdominal segments are more or less margined with fulvous, but not 

 spotted. Two specimens contained in my own collection, and labelled " Peru," do not 

 seem to differ from the Mexican examples. 



2. Metacycla marginata. (Tab. XXXIV. figg. 1, 2,) 



Metacycla marginata, Chap. Gen. Col. xi. p. 213, note 1 (1875) \ 

 Eab. Guatemala \ Duefias (Champion). 



3. Metacycla caeruleipennis. (Tab. XXXIV. fig. 3.) 



Black ; thorax flavous, impunctate ; elytra dark metallic blue, finely and closely punctured. 

 $ . Abdomen greatly inflated, the lateral margins fulvous. 

 Length 2|-3 lines. 



Eab. Mexico, Chabao, Juquila, Panistlahuaca (Salle), Jalapa (Edge). 



biol. cente.-amek., Coleopt., Vol. VI. Pt. 1, February 1888. 4 h 



