314 | SUPPLEMENT. 
whereas in this specimen both tarsi are female or five-jointed. An examination of the 
other parts of the body does not reveal any other departure from the usual structure ; 
but it is necessary to remark that the abdomen has shrunk, as it usually does in these 
insects, and is not easily examined. 
Var. ? 
Antennis brevibus, articulo basali externe fusco notato, articulis quarto ad octavum externe flavis. ¢. 
Hab. Mexico, Ciudad in Durango 8100 feet (Forrer). 
This variety can hardly represent a distinct species, especially if the specimens I 
have seen from the United States with the antenne nearly quite yellow are to be 
referred to C. tricolor. There is a very small female example from the same locality 
which may be mentioned here; it hardly differs from typical C. tricolor, except 
in size. 
3 (a). Collops frontalis. 
C. tricolori summa affinitate ; niger, capite nigro-cyaneo, ultra oculos et antennarum basi lete flavis; prothorace 
brevi, plus duplo lato quam longus, ferrugineo ; abdomine rufo, segmentis basi infuscatis ; elytris violaceo- 
ceruleis. Long. 53-6 millim. ¢ 9. 
Hab. Mexico, Oaxaca (Hoge), Etla (Sad/é). 
This species is very close to C. tricolor, the most striking difference being that. a 
greater amount of the head is coloured yellow in front; this colour extends to the 
eyes, so that one third of the eye is surrounded with yellow, and a sinuous line drawn 
between the front margins of the eyes will demarcate the yellow portion. ‘The short- 
ening of the thorax is very evident in the four examples I have seen. The colour of © 
the elytra may, of course, be subject to variation, but is constant in these specimens. 
There are three males and one female. The antenne are coloured as in C. tricolor ; 
the appendage of the third joint in the males is distinct, long, and curved, and nearly 
quite yellow. 
Collops femoralis (p. 113). 
To the locality given, add :—Mxxico, Presidio, Mazatlan, San Blas (forrer). 
Collops geminus (p. 113). 
Var. pedibus basi rufis. 
Hab. Mexico, Presidio, Milpas 5900 feet (Forrer). 
5 (a). Collops validus. 
Collops validus, Horn, Trans. Am. Ent. Soe. iii. p. 82°. 
Hab. Mexico, Yaqui river in Sonora! (Dr. Palmer). 
