CassididcB. 65 



also entirely different : in M. Buckley i * the fulvous vitta 

 is placed on the inner portion of the margin, extending 

 for a short distance over the disc ; both its edges are 

 irregular_, but it is far more deeply notched on its outer 

 side. In M. pectinata, on the other hand, the stripe is 

 placed near the outer edge of the lateral margin, its 

 outer border is entire, and it emits from its inner edge a 

 number of short transverse fasciae, which extend inwards 

 as far as the margin of the disc. 



Mesomphaliob Pascoei. 



Rotundata, postice paullo attenuata, modice convexa, 

 obscure nigro-aenea aut nigra, subopaca, pube sericea 

 vestita, subtus magis nitida, antennis nigris; thorace 

 longitudine fere duplo latiori, lateribus pone apicem 

 oblique ampliatis, deinde rotundatis, pone medium rectis, 

 paullo divaricatis; disco laevi, medio convexo, tenuiter 

 longitudinaliter canaliculate, utrinque concave, lateribus 

 late reflexis, pube depressa argenteo-sericea minus dense 

 vestito ; elytris thorace multo latioribus, humeris non 

 prominulis c? ; leviter antrorsum productis $ ; apice 

 rotundatis; lateribus pone humeros fere ad medium 

 rotundato-ampliatis, pone medium ad apicem rotundato- 

 angustatis, apice conjunctim subacute rotundatis aut 

 rotundatis; disco modice convexis, basi citius elevatis, 

 pube suberecta adspersis, elevato-reticulatis, reticulo 

 nitido, hie ilKc fortiter punctate, disco exteriori saepe 

 obsolete, areolas sat parvas irregulares opacas inclu- 

 dente ; margine laterali late explanato, vix deflexo J* ; 

 magis deflexo ante medium $ ; subcrebre punctate, vitta 

 submarginali angusta, pallide fulva, intus ramulos non- 

 nuUos irregulares, saepe interruptos, nonnihil obsoletos 

 emittante, ornate. 



Long. 8-9 lin. 



Hah. — Ecuador. 



This species is very similar in pattern to M. pectinata; 

 it is at once known by the narrow thorax, the distinct 

 humeral angles of the elytra, the coarse pubescence. 



* The vitta in the c? and ? of this species covers a larger portion of 

 the surface, and extends much closer to the border of the elytra ; but its 

 outer margin is even more deeply notched than in the other sex. 



TRANS. ENT. SOC. 1872. PART I, (APRIL.) P 



