928 FAMILY U SCAKAB KID.K. 



In using the following table the student must, at all times, be 

 careful that the specimens are perfect ; that is, that the spinules at 

 the tips of the tibia 1 are not worn or accidentally reduced to an equal 

 sixc. or that the long hairs fringing the sides of the tibia? do not, by 

 crossing the field of vision, deceive into the belief that the. spinules 

 are unequal. In those that are pubescent, various accidental causes 

 may have removed the hairs. In old specimens of those species in 

 which the elypens is denticulate, the teeth are apt to be worn down, 

 as also the spurs of the tibia- and the large teeth of the front tibia-. 



KEY TO I.XIHAXA SI'KCI IvS OK Al'IIODH S. 



a. Scutelliim Ionic, one-fourth or one-fifth the length of the elytral suture; 



front ti))i;e not serrate above The upper tooth. 1750. IIAMATI s. 



(/. Scutellum short, not more than one-eighth to one-tenth the length of 



suture, 

 fr. Apex of hind tibia? fringed with short, equal spinules; head with 



three small tubercles on the vertex. 

 c. Thorax with distinct basal marginal line. 



(I. Mesosternmn not carinate between the coxa-. 



i'. Elytra clear red; thorax dissimilar in the sexes, impressed in 

 front in the male. 1751. FIMKTAKICS. 



cc. Elytra piceous or dull red; thorax similar in the sexes. 



/. Color wholly piccoiis black, front angles of thorax never 



paler ; first joint of hind tarsus very little longer than the 



next two; form small, robust. 1752. RURICOLA. 



"ff. Front angles of thorax paler; first joint of hind tarsus as 



long as the next three; elytra uniform reddish-brown, the 



first interval narrower than second. FCETIDUS. 



>lil. Mesnsternum distinctly carinate. 



//. Color entirely black or piceous: first joint of hind tarsus not 



longer than the next two; first or sutural interval of elytra 



as wide or wider than second. 1753. GRANARIUS. 



////. Elytra reddish-brown, the suture and side margins piceous; 



first joint of hind tarsus equal to next three. 



1754. VITTATL'S. 



cc. Thorax without trace of basal marginal line; color dull brownish- 

 yellow, with hind portion of head, large spot on thorax and su- 

 tural line of elytra dark brown or piceous. 1755. LIVIDTS. 

 lib. Apex of hind tibiu? fringed with unequal spinules; head rarely with 



tubercles. 



li. Elytra opaque: color reddish-brown, head and thorax slightly 

 darker: si/.e small. .",.5-4 nun. 175(5. i.K.vrrs. 



////. Elytra more or less shining. 



i. Thorax not narrower at base than apex, not sinuate at sides 

 near bind angles. 



