4 Phytophaga Mulayana. 



Hab. Java, Flores ; also Cambodia, whence it has been sent by 

 the late Mons. Mouhot, in great abundance. 



This fine species is most closely allied to S. speciosa, Lac. : it 

 agrees so completely in nearly all its characters with that insect 

 that a detailed description would be almost useless. 1 shall 

 therefore confine myself to the points of difference between the 

 two insects. 



In S. mutahUis $ the antennae are equally long, but stouter ; 

 the thorax is usually (but not always) slightly broader ; the elytra 

 are much broader at their base, the humeral callus being more 

 prominent, and causing the base of the elytra to appear more 

 abruptly truncate ; they are shorter in proportion to their basal 

 breadth, and at the same time more quickly narrowed from base 

 to apex, thus being less parallel and more regularly wedge-shaped ; 

 they are less deeply depressed transversely below the basilar 

 space, their surface is more finely punctured and opake. The 

 liinder thighs are shorter, thicker, and less attenuated towards 

 their apex ; viewed laterally, they are suddenly thickened at their 

 base, and then gradually increase in width to beyond their middle ; 

 in 8. speciosa they increase more gradually at first, but remain 

 for some distance in the middle at nearly the .same width ; viewed 

 from above, the outer edge in S. mutabil'is is more regularly 

 curved, the thickest portion o^the femur being about or just 

 beyond the middle ; in S. speciosa, on the other hand, the thigh 

 is more attenuated from its middle to its apex, the thickest part 

 being rather before than at tlie middle itself. In the female 

 the elytra are oblong-ovate, and not narrowed from base to apex 

 as in the male ; but I do not know any characters by which the 

 ? can be separated with certainty from the same sex of S, speciosa, 

 S. Druryi, and other allied species. 



G. Sagra supcrha, Lac. 

 Mon. Phyt. i. p. 39. 



'* Viridi-aurata, subnitida ; antennis vix longitudine dimidii cor- 

 poris, prothorace latitudine antica nonnihil longiore, margine 

 antico minus producto, subsinuato, angulis anticis parum pro- 

 minulis; elytris intra humeros modice impressis, gemellato- 

 punctato-striatis, striis pro maxima parte deletis. 



Alas. — Femoribus posticis validissimis, elytris valde longioribus, 

 subtus apice profunde sinuatis denteque valido armatis, sinu 



