62 GEO. H. HORN, M. D. 



The only other representative of the group in our fauna is Gal. 

 externa, beside which the species of the present genus seem rather 

 out of place, but as classification should be based on structural chai'- 

 acters and not facies, there seems no other course to pursue than to 

 place the species in the Galerucites. 



SufTrian has described, from Cuba, a Haltiea dichroa (Archiv. fiir 

 Naturgesch. 1868, p. 203) in such a manner as to lead one to sup- 

 pose that it might possibly be a member of the present genus. 



The species are closely allied, and not easy to separate sharply, by 

 description, although easily separable in cabinet. The following 

 characters will, with the description, assist in their identification : 



Head and thorax smooth, punctuation scarcely evident. 



Base of thorax regularly arcuate, hind angles not distinct; punctuaticn of 



elytra rather fine and moderately closely placed plitcida. 



Base of thorax truncate at middle, oblique each side, hind angles distinct ; 



punctuation of elytra coarse iiiodesta. 



Head and thorax very distinctly punctate, the former alutaceous. 



Base of thorax arcuate, hind angles slightly evident; punctuation of elytra 

 fine and not vrell impressed (lelata'. 



H. placida n. sp. — Oval, slightly oblong, subdepressed, yellowish testace- 

 ous, meta-pectus piceous, elytra metallic-blue; antenufe pale brownish testace- 

 ous. Head shining with minute scattered punctures. Thorax more than twice 

 as wide as long, slightly narrowed in front, sides strongly arcuate, disc with a 

 deep, median, transverse depression, which may be reduced to a fovea each side, 

 surface shining, minutely sparsely punctate ; elytra finely and moderately closely 

 punctate, much smoother at apex. Body beneath sparsely pubescent. Legs pale 

 yellowish. Length .12 inch. ; 3 mm. 



IfaZe.— Last ventral with a broad, almost semicircular emargination. 



Female. — Last ventral entire. 



Three specimens — Arizona, doubtless from the southern part. 



H. modesta n. sp. — Oval, slightly oblong, yellowish testaceous, elytra 

 bluish green ; antennfe yellow. Head smooth, sparsely minutely punctate, a 

 slight median impression of the front. Thorax more than twice as wide as long, 

 slightly narrowed in front, sides strongly arcuate, disc with a sharp, median, 

 transverse depression, surface smooth, with a few puncture^ near the sides, hind 

 angles small but distinct ; elytra relatively coarsely, not closely punctate; punc- 

 tures a little less distinct at apex. Body beneath and legs yellowish testaceous, 

 sparsely pubescent. Length .10 inch. ; 2.5 mm. 



Male. — Last ventral truncate, with a small emargination at middle, disc of 

 segment slightly flattened. 



The only specimen examined is entirely yellow beneath, while the 

 other two species have the nieta-pectus piceous. With such limited 

 material it is not possible to assert the constancy of the character. 



Collected in Biscayne, Fla., by Mr. E. A. Schwarz. 



