18 PHYTOPHAGA. 



2. Megascelis humeronotata. 



Megascelis humeronotata, Clark, Cat. Phyt. App. 1865, p. 19. 

 Hab. Mexico. 



3. Megascelis affinis. 



Megascelis affinis, Lacord. Mon. p. 289 1 . 



Hab. Guatemala, Capetillo (Champion). — Colombia x . 



A single specimen received from Guatemala does not much differ from Lacordaire's 

 description ; but the underside is metallic green, changing to blue on the abdomen, 

 the latter having the last segment testaceous, which, however, is also the case with 

 M. cerea, Lacord., an allied species. The thorax of the present species is distinctly 

 transversely strigate-rugose throughout, which principally distinguishes it from 

 M. cerea. 



4. Megascelis vittata, 



Megascelis vittata, Fabr. Syst. El. i. p. 477 ; Illig. Mag. vi. p. 179 ; Lacord. Mon. p. 271. 

 Hab. Guatemala, Zapote (Champion).— Noetheen Beazil, Para. 



The specimens from Guatemala are rather light-coloured, the sutural purplish 

 vittee of the elytra occupying the first three striae, while the marginal ones are very 

 narrow and obsolete; the elytra are covered with fine but distinct light-yellowish 

 pubescence. 



5. Megascelis purpureicollis. (Tab. I. fig. 2.) 



Megascelis purpureicollis, Jacoby, P. Z. S. 1877, p. 511. 

 Hab. Nicaeagua, Chontales (Janson). 



In the original description the size of the insect is given as three lines ; it ought to 

 have been, however, four lines. The principal difference from other similarly coloured 

 species, as regards the elytra, is to be found in the light coppery colour of the head 

 and thorax and the thick yellowish pubescence covering these parts. 



6. Megascelis viridipallens. 



Megascelis viridipallens, Clark, Cat. Phyt. App. p. 4 1 . 

 Hab. Guatemala, Zapote (Champion). — Beazil 1 . 



I can but refer the Guatemalan specimens to Clark's species, the type of which is in 

 the British Museum, although the colour is slightly different, the elytra being more of 

 a testaceous hue, while the shoulders and lateral margins only are brilliant pale 

 green. 



