36 
U. S. P. R. R. EXP. AND SURVEYS-ZOOLOGY—47TH PARALLEL. 
inargine apicali maculaque communi scutellari nigris, striis utrinque tribus externis integris, 
reliquis obliteratis ; tibiis anticis biclentatis, posticis seriebus transversis extrorsum spinulosis. 
Long. -25. 
One specimen from San Francisco, given me by Mr. Wild. Smaller and narrower than 
H. arcuatus, to which it is allied. The thighs are entirely black, and the posterior tibiae are 
more compressed. The sutural stria is entirely wanting, and the epipleurm are marked with a 
single lateral stria ; the pygidium is equably and coarsely punctured. 
Saprintts Leach. 
S. estriatus , oblongo-rotundatus, mneo-niger, thorace confertissime aciculato, callo utrinque 
rotundato, spatioque basali sublaevibus, elytris confertissime aciculatis striis dorsalibus nullis, 
macula pone basin subsuturali altera humerali tertiaque intermedia minore nitidis lmvibus, 
stria externa elongata flexuosa parum distincta. Long. - 13. 
One specimen from Oregon, collected by Dr. Townsend. This species belongs with S. fra- 
ternus, mancus, bigemmeus, &c., to group 8 of my division of the genus, (Proc. Acad. Nat. 
Sc. 6,) in which the front is transversely margined and angularly impressed, and the proster¬ 
num compressed with the striae distinct. The anterior tibim were probably four-toothed, as in 
S. bigemmeus, but the teeth, with the exception of one at the middle are entirely worn off. 
Teretrius Er. 
T. obliquulus, oblongus, cylindricus, niger nitidus punctatus, elytris striola obliqua ad basin 
versus humeros impressis ; antennarum clava, pedibusque piceo-rufis, tibiis anticis subito 
dilatatis, sexdenticulatis. Long. ’13. 
Sacramento; Mr. Wittick. This species resembles inform T. picipes, but is considerably 
larger, being fully twice as long ; that species is more finely punctured, and has no oblique 
stria at the base of the elytra. 
Epuraea Er. 
E. nubila , elongato-ovalis, testacea, punctulato-rugosa, subtiliter flavo-pubescens, thorace 
antrorsum angustato, lateribus rotundatis depressis, angulis posticis subrectis, elytris anguste 
marginatis, macula utrinque ad medium nigro-picea ornatis, ad apicem singulatim rotundato- 
truncatis. Long. ’10. 
One specimen, San Jose, California. This species is a little wider than E. parallela Lee., 
but is narrower than usual; the thorax is about twice as wide as its length ; the base is 
broadly rounded in the middle, and slightly sinuate towards the hasal angles, so that the 
latter become nearly rectangular, and not rounded. The elytra are about one-half longer 
than wide. 
Omosita Er. 
0. inversa, nigra, opaca, subtiliter griseo-pubescens, confertim subtilius punctata, thorace 
piceo-rufo, latitudine plus duplo breviore, antrorsum magis angustato, lateribus rotundatis late 
depressis, disco canaliculato et utrinque subfoveato, elytris testaceis, macula utrinque basali, 
