AGEILUS. 97 



rugulose ; in some lights a faintly impressed median line may be traced ; the posterior 

 ridge is scarcely distinguishable (fig. 2). The elytra are finely and moderately closely 

 punctured, appearing slightly asperate in some lights ; the subcosta is not very distinct, 

 curved to the suture just before the apex ; each elytron has a small semicircular 

 emargination at the apex (fig. 2 a). The prosternal chin-piece is gently emarginate. 

 The prosternum is very finely punctured, the punctures often arranged in irregular 

 transverse lines ; the intercoxal process is somewhat deflexed and obliquely narrowed at 

 its apex. The episterna are shining, and with only a few fine punctures on the inner 

 half, pubescent on the outer half. The abdomen is very finely and not closely punc- 

 tured ; the lateral carina of the basal segment is scarcely angulated in the middle, 

 rectilinear posteriorly. 



79. Agrilus chalcoderes. 



Agrilus chalcoderes, Chevr. Col. Mex. Cent. ii. fasc. 6, no. 143 (1835) \ 



Hab. Mexico \ Play a Vicente (Salle), Oaxaca, Cerro de Plumas, Acapulco (Edge), 

 Chilpancingo in Guerrero (Hoge, H. H. Smith), Amula in Guerrero (H. H. Smith). 



The specimens from the above localities (a long series from Oaxaca and one or two 

 from each of the other places) vary from 2§ to 3^ lines in length. They have yellow 

 pubescence in the lateral impression of the thorax, and the metathoracic episterna, the 

 outer angle of the posterior coxse, and the posterior angle of the metasternum marked 

 with deep orange-yellow pubescence. 



Specimens from the following localities vary from 2 J to 2J lines in length : — 



Mexico, Cordova, Juquila (Salle), Oaxaca (Hoge) ; Panama, Bugaba 800 to 1500 feet, 

 Caldera 1200 feet (Champion). 



These examples (one from Oaxaca, and one or two from each of the other places), 

 besides averaging smaller, have no pubescence on the thorax and no orange marks on 

 the sides beneath. They appear to be in good condition. 



It is possible that these two series may represent two species, but I am unable to say 

 to which Chevrolat's type (now in the British Museum) is to be referred. It is 2f lines 

 in length, and has all the appearance of the specimens from Oaxaca in the first series ; 

 it has some yellow pubescence in the lateral thoracic impression, but no orange spots 

 below, nor does Chevrolat mention them in his description. 



80. Agrilus impressus. 



Aphanisticus impressus, Chevr. Col. Mex. Cent. ii. fasc. 6, no. 145 \ 

 Hab. Mexico, Alvarado 1 . 



81. Agrilus atripennis. 



Agrilus atripennis, Chevr. Col. Mex. Cent. ii. fasc. 6, no. 141 (1835) l . 



Hab. Mexico *, Playa Vicente, Vera Cruz, Panistlahuaca (Salle), Iguala in Guerrero 

 (Hoge). 



biol. centk.-amer., Coleopt., Vol. III. Pt. 1, April 1889. 



