96 GEO. H. HORN, M. D. 



palpi. The inesosternum is less prominent and decidedly emarginate 

 in front. 



One species occurs in our fauna. 



"E, nervosa Mels. — Oval, broader posteriorly, moderately convex, sparsely 

 clothed with short cinereous pubescence. Thorax twice as wide as long, much 

 narrowed in front, apex truncate, half as wide as base, emarginate, base feebly 

 bisinuate, hind angles subacute, sides moderately arcuate, margin acute, disc 

 moderately convex, sparsely punctate, intervals very finely punctulate but 

 moderately shining, near the basal margin on each side of the scutellum a 

 fovea sometimes indistinct. Elytra not wider at base than the thorax, sides 

 arcuate and gradually broader to apical third, surface sparsely punctate, in- 

 tervals finely puuctulate-scabrous. Body beneath very finely punctulate. 

 Femora piceous, tibiae and tarsi pale. Length .12 — .20 inch; 3 — 5 mm. (PI. I, 

 fig. 8). 



This species is extremely variable in size and appearance, present- 

 ing such a diversity of aspect that it may be considered entirely 

 pardonable to have described it under several names. These will 

 be considered in order. 



Eurea nervosa. — This form is female. It is larger, more robust, 

 piceous with slightly paler elytra on which are seen three darker 

 lines which unite before the apex, replacing in this insect the striae 

 of Euhria palustris. 



Ectopria tarsalis and tibialis. — Here the elytra are similar in color 

 to the thorax, a little more shining than in nervosa, and with the 

 darker lines entirely hidden. The thorax in this and the preceding 

 form is entirely piceous without lateral pale space. Of this variety 

 both % and $ occur. 



Var. . — This is a form in which the elytra exhibit faint 



traces of the vittse but the sides of the thorax are broadly yellow. 



Ectopria thoracica. — Here the elytra are always nearly black and 

 the sides of the thorax broadly yellow. Of this form both sexes 

 occur, the males more commonly. • 



In addition to the above variations I have seen three S 's in which 

 the anterior margin of the clypeus is slightly reflexed. These have 

 the antennae serrate, the joints simply triangular, while other speci- 

 mens precisely similar in every other respect have the margin of the 

 clypeus normal. The males of the thoracica form present two varia- 

 tions in the form of the antennoe, the one simply serrate as above 

 described, the other subpectinate, the branch from the anterior apical 

 angle being nearly as long as the joint itself (PI. I, fig. 8 c, d). 



From the above remarks it may be inferred that the species is an 

 aggregate of as yet undifferentiated forms, as such I view it. That 



