298 GEO. H. HORN, M. D, 



fourth broader, fifth still longer and more dilated, sixth short, conical, its lower 

 angle prolonged in an acute process, 7-10 equal in length, but gradually broader, 

 eleventh longer. Plate VI, fig. 19. 

 Female. — Has not been seen. 



While this species has the strongly dilated aiitennal joints of the 

 vittate s])ecies, the form of body and uniform color approach it to 

 albionica. It is the only species known to me in which the male 

 sixth joint has any marked peculiarity. 



Occurs in California ; region unknown. 



7. p. Ulkei n. sp. — Oblong oval, moderately convex, piceous black, shining, 

 without metallic lustre; legs, excepting the posterior femora, reddish brown. 

 Antennse half as long as the body, piceous, three basal joints pale. Head not 

 punctate. Thorax one-third wider than long, very little narrowed in front, 

 sides arcuate, disc convex, sparsely regularly punctate, surface alutaceous. Elytra 

 scarcely widei than the thorax, humeri obliquely rounded, a distinct depression 

 within the umboue, disc convex, more coarsely, closely and deeply punctate than 

 the thorax, a little smoother near the apex, surface shining. Body beneath pi- 

 ceous, abdomen sparsely punctate. Legs reddisli brown, posterior femora pice- 

 ous. Length .10 inch. ; 2.5 mm. 



Male. — Last ventral segment distinctly sinuate each side, middle lobe moder- 

 ately prominent, a deep triangularly oval impression extending more than half 

 the length of the segment. Antennse with joints 2-3-4 gradually shorter and 

 broader, fifth as long as the preceding two and more than twice as broad, sixth 

 equal to fourth, 7-10 longer and equal, eleventh longer. Plate VI, fig. 23. 



This species is rather more robust than any other known to me, 

 recalling the form of some Chsetocnema. 



There will be no difficulty in distinguishing the male of this spe- 

 cies from any in Series A (1) by the broad fifth joint, (2) the ab- 

 sence of elytral vitta and (li) the simple form of sixth joint. It is, 

 therefore, most nearly allied to detdicoriiis. 



For the unique I am indebted to my friend Ulke, without whose 

 assistance my studies in the Halticiui would have been far more 

 incomplete than they now are. 



Occurs in Ohio. 



8. P. tlecipieiis n. sp. — Elongate oval, rather feebly convex, piceous black, 

 shining, without metallic lustre, elytra often with a short, indistinct yellow line 

 one-third from apex. Antennae half as long as the body, piceous, three basal 

 joints paler. Head alutaceous, obsoletely finely punctulate. Thorax nearly 

 twice as wide as long, slightly narrowed in front, sides feebly arcuate, disc con- 

 vex, coarsely, deeply and closely punctate, the surface distinctly alutaceous. 

 Elytra wider at base than the thorax, humeri rounded, disc feebly convex, the 

 punctures coarser and deeper than those of the thorax, very closely placed and 

 but little finer near the apex, surface shining, not alutaceous. Body beneath and 

 legs piceous, abdomen almost entirely smooth. Length .08— .10 inch. ; 2—2.5 mm. 



