38 GEO. H. HORN, M. I>. 



The species are remarkable in having the spurs of the middle and 

 j)Osterior tibite finely pectinate on their inner or lower edge. The 

 last two species have the eyes moderately closely approximate on the 

 front, while in ornata they are distant. For the Scandinavian spe- 

 cies of the former type Thomson (Skand. C/ol. vi, p. 306) retains the 

 name Orchesia, while for the ornate form Cliuocera is used. The 

 latter name has not been generally adopted. 



O. ornata n. sp. — Very elongate oval, narrower behind, luteou.s or oclireous, 

 moderately shining, surface clothed with fine yellowish pubescence, elytra with 

 l)iceous markings. Front densely punctured, three vague impressions, one near 

 each eye, a third on the occiput. Thorax much broader than long, sides arcuate, 

 broadest slightly in front of the middle, surface densely punctured, the basal 

 impressions well marked and oblique. Elytra densely punctured, slightly rugu- 

 lose near the baFc, an oval, oblicjue piceous spot on each elytron near the base, a 

 sinuous fascia one-third from apex, a small piceous spot close to the apex. Body 

 beneath densely punctured, the abdomen very finely. Prosternum very narrow 

 at tip and acute. Length .18 inch ; 4.5 mm. 



This species is the first re])resentative of the genus from the west 

 coast. The eyes are more distant on the front than in either of the 

 other species, and, in view of a similar occurrence in Eustrophus, 

 does not seem to warrant the division of the genus. That the elytra 

 are ornamented with a design adds another to the many evidences 

 of the similarity of our west coast fauna to that of Europe. 



Occurs in Washington Territory and Oregon. 



O. castanea Mels., Proc. Acad. 1846, p. 51. — Elongate, scarcely more acute 

 posteriorly,, castaneous or brown, pubescence silken brown. Eyes closely ap- 

 proximated on the front. Thorax rather coarsely punctui-ed near the base, more 

 finely in front, the basal impressions vague. Elytra punctured similarly to the 

 thorax, the punctures gradually finer to the apex. Body beneath very closely 

 punctate, the abdomen more finely. Prosternum nan-ow and acute at apex. 

 Length .14 — .20 inch ; 3.5 — 5 mm. 



Occurs from Massachusetts to Michigan, southward to Virginia. 



O. gracilis Mels., loc. cit — Similar to castanea, but more slender, more nar- 

 rowed posteriorly, sculpture coarser and more rugose ; basal impressions of tbora.K 

 indistinct. Prosternum parallel between the coxie and obtuse at tip. Length 

 .14 — .16 inch ; 3.5 — 4 mm. 



The differences between this species and the preceding are more 

 entitled to generic value than those used to separate species of the 

 ornata type. 



Occurs from Pennsylvania to Louisiana. 



