NORTH AMERICAN COLEOPTERA. 281 



23. H. Biirgessi Crotch.— Oval, moderately convex, head and thorax red- 

 dish yellow, elytra metallic bluish green, shining, abdomen piceous, legs pale 

 reddish yellow. Antennae pale at base, joints five to eleven brown. Head 

 smooth, frontal carina distinct, but obtuse, tubercles small, but well marked, 

 distinctly limited above by a deep groove. Thorax one-half wider than long, 

 sides arcuately narrowing to the front, ante-basal impression deep, arcuate, 

 extending entirely across the thorax from angle to angle, disc convex, surface 

 smooth, shining. Elytra a little wider at base than the thorax, humeri obtusely 

 rounded, umbone moderately pi'ominent, surface with coarse, deep, moderately 

 closely placed punctures which become fainter toward apex; abdomen piceous, 

 sparsely punctate, each puncture with a very short hair. Length .06— .07 inch. ; 

 1.. 5— 1.75 mm. 



The male has the apex of the last ventral flattened and slightly 

 upturned toward the pygidiuni. 



Without an examination of the type it would have been impossible 

 to have determined this insect. It was described by Crotch as a 

 Haltica and placed in the series with closed front coxal cavities ; the 

 length was given as .16 inch., while the description, otherwise, is very 

 unsatisfactory. While it is widely separated from nana, by the table, 

 it is more closely related to it than any other species by the form of 

 the ante-basal impression and the coarse punctures of the elytra. It 

 is not at all a Cseporis, as we have recently placed it. 



Occurs at Key West, Florida. 



24. H. ruTa Illiger.— Oval, broader behind, moderately convex, orange yel- 

 low, moderately shining. Antennaj half as long as the body, piceous, third joint 

 distinctly longer than the fourth. Head yellow, labrum black, frontal carina 

 broad and obtuse, tubercles very flat, a few coarse punctures in an arcuate series 

 parallel with the border of the eyes. Thorax nearly twice as wide at base as 

 long, narrowed to the front, sides arcuate, margin very narrow, anterior angles 

 obtuse, a slight sinuation or notch in the margin behind them, posterior angles 

 acute, sometimes slightly prominent, disc convex, ante-basal impression broad 

 and shallow, not entire, surface sparsely, indistinctly punctate. Scutellum black. 

 Elytra a little wider at base than the thorax, humeri rounded, umbone feeble, 

 surface indistinctly, sparsely punctr.te. Body beneath, except prothorax, piceous ; 

 abdomen reddish, varying to piceous, sparsely punctate. Legs piceous, the poste- 

 rior femora pale beneath and at base. Length .16— .20 inch. ; 4 — 5 mm. 



This insect seems to have some trouble in finding a permanent 

 generic resting place. Following the " Catalogus" it is a Disonycha, 

 while a species completely congeneric (and I think also specifically 

 identical) has been described in the " Biologia" as Ladica scutellaris. 

 That it cannot be referred to Lactica is evident from the character 

 of the basal impression of the thorax, and the choice is plainly be- 

 tween Disonycha and Haltica. The latter genus has been chosen, 

 because there is a well marked ante-basal depression of the thorax, 



