88. PHYTOPHAGA.—SUPPLEMENT. 
with Lacordaire’s description, these having the middle of the disc very finely and 
sparingly punctured, the reverse being the case in most of the allied species. Here 
again, as in many other instances, the shape of the thorax as given by the author 
seems to be incorrect. The thorax in S. basilaris is described as about one third 
broader than long ; in our specimens it is twice as broad as long (which indeed is the 
shape of the thorax of most of the species of Sawinis, if the width of the base is 
compared with the greatest length across the middle). The elytra in our insect are 
rather strongly and regularly punctate-striate, the punctuation becoming finer towards 
the apex and the punctures themselves being somewhat transverse in shape, and there 
are traces of transverse wrinkles near the base (I cannot say, however, that the inter- 
stices are finely alutaceous as given by Lacordaire—they are, on the contrary, shining 
and with a few fine punctures here and there). In our specimen from Orizaba the 
humeral spot extends to half the length of the elytra; in those from Oaxaca this spot 
is shorter (in one specimen, however, extending much nearer to the suture than in the 
other). In the Sallé collection the name of S. dasilaris is attached to the Orizaba 
specimen, but, as may be seen, all doubt is not removed as to the proper identification 
of the species. 
Saxinis quadrina (p. 36). 
To the localities given, add :—GuatemaLa, Duefias (Champion), Zapote (mus. Stutt- 
gart). 
A specimen of this species labelled in Lacordaire’s handwriting is contained in the 
British Museum; I am therefore enabled to give a more detailed description of 
S. quadrina after having carefully compared the specimens from the above localities. 
These examples are all of a very dark bronze colour or entirely black (like the variety 
mentioned by the author), The thorax is stated by Lacordaire to be scarcely broader 
than long, but this only applies to the male insect, the female having a considerably 
broader thorax ; the disc in both sexes is very finely and not very closely punctured, 
the punctuation becoming, however, very close at the sides. The elytra may be 
described as rather regularly punctate-striate, the striz consisting of single rows of 
punctures which diminish gradually in size towards the apex; the interstices are more 
or less convex (but not strongly so) and impunctate ; and the red humeral mark is of 
nearly quadrate shape, with its posterior margin perfectly straight. S. guadrina varies 
from 14—23 lines in length. 
2 (a). Saxinis sonorensis. (Tab. XX XVII. fig. 10.) 
Bluish-green ; head rugosely punctured; thorax closely and distinctly punctate; elytra closely punctate- 
striate, the interstices more finely punctured, the shoulders with a rounded reddish-fulvous spot. 
Length 13-2 lines. 
Head very closely punctured, with longitudinal raised strige ; antenne with the joints transverse from the 
