24 GEO. H. HORN, M. T). 



ated. 'J'here is also a slight difference in size. Inasmuch as the va- 

 riation here shown is amply illustrated in species more abundantly 

 represented by specimens, and known to have no specific value, the 

 two species have been united. 



Occurs in Florida, Haulover (Schwarz). 



O. lineatus Lee. — Oblong, feebly convex, piceo-testaceous, surface faintly 

 bronzed, legs pale. Thorax not much wider than long, apex broadly, but feebly 

 emarginate; sides arcuate in front, slightly sinuate and narrowing to base, with 

 a very narrow transparent border. Disc feebly convex, surface granularly aluta- 

 ceous, not punctured, median line finely impressed, not long, sometimes very 

 vague, discal fovese replaced by impressed arcuate lines, a vague transverse de- 

 pression between the apex and base of these lines, lateral impressions shallow) 

 the inner side limited by an oblique line, sometimes a vague impression near the 

 hind angles. Elytra a little broader at base than the thorax, the strise faintly 

 impressed, punctures moderate and closely placed, intervals slightly convex, and 

 at middle narrower than the strife. Length .06 — .08 inch. ; 1.5— 2 mm. PI. ii, 

 fig. 11. 



The thoracic sculpture of this species shows the most decided ap- 

 proach to the Helophorus type of any in our fauna. At the same 

 time it seems more nearly to represent the true Ochthebius, of Europe, 

 as defined by Kuwert. 



Occurs in Oregon, California, Arizona, Colorado, Texas and New 

 Mexico. 



O. SClilptllS Lee. — Piceous, shining, surface slightly green bronze. Thorax 

 nearly twice as wide as long ; apex broadly emarginate, a slight sinuation within 

 the angles. Sides arcuate, a very slight and gradual sinuation beginning at 

 apical third, the transparent border correspondingly narrow. Disc regularly 

 convex, sparsely punctate, the intervals smooth, mediau line entirely obliterated, 

 discal fovese replaced by a slender line, lateral fossse broad but not deep, more 

 closely punctate, a slight fovea near the hiud angles. Elytra a little wider than 

 the thorax, strise not impressed, punctures moderate, subquadrate, not closely 

 placed, finer toward apex, intervals flat, broader than the strife, faintly wrinkled. 

 Length .06 inch. ; 1.5 mm. PI. ii, fig. 12. 



This species is very distinct by the total obliteration of the median 

 line of the thorax. The discal fovese are replaced here, as in lineatus, 

 by an entire slender line, somewhat deeper posteriorly. 



Occurs in California and Arizona. Dr. LeConte notes a specimen 

 in my cabinet from Canada, but it is not now before me. 



O. Iloliiibergi Mann.— Piceous, faintly bronzed, moderately shining. 

 Thorax less than twice as wide as long, apex bi-oadly emar>iinale, without sinua- 

 tion near the angles. Sides arcuate in front, slightly sinuate toward the base, 

 the transparent border narrow, extending from the front angles and somewhat 

 wider behind. Disc moderately convex, sparsely punctate, median line short, 



