DESCRIPTIONS OF NEW SPECIES. 139 



ISOMER.! Muls 



425. I. quadristriata. Nigro-picea, vel testaceo-pioea, Bubnitida 

 dense sericeo-pubescens, thorace latitndine dnplo breviore, lateribae 



rotundatis, basi bisinuata temiiter inargiiiata, augulis posticis reotis, 

 cum capite dense subtiliter punctato; elytris dense subtiliter pnnotatia, 

 striis obsoletis, duabus intends pone medium distinct is ; ant. Minis foBois 

 corporis dimidio longioribus, tenuibus ; pedibus ferrugiueo-testaceis, 

 femoribus ssepe infuscatis. Long. *24 — -2G. 



Cistela quadristriata Coupek, Canadian Naturalist, Feb. 1805, p. 62. 



Lake Superior, Canada, New York, Georgia, .Missouri. A 

 widely diffused and not uncommon species, having the apper 

 surface nearly as finely punctured as Cistela sericca, from which 

 it is at once distinguished by the more broadly triangular, rab- 

 cultriform last joint of the maxillary palpi. 



It is with some hesitation that I refer this species to Tsomira, 

 the outer side of the last joint of the maxillary palpi being in J. 

 antennata twice as long as the apical side, while in our species 

 the difference in length is not very great. I do not observe a 

 complete uniformity in the form of the part in question in those 

 genera of which I have examined several species, and therefore 

 cannot consider the difference as sufficient to warrant me in pro- 

 posing a new generic name. 



In one specimen, from New York, the inner side of the 1;;-' 

 joint of the maxillary palpi is distinctly bisinuate, but I observe 

 no other character, except that the head and thorax are black, 

 and the elytra paler and more finely punctulate than in the other 

 specimens ; I have mentioned it in the List as I. vclutwa. 



MYCETOCIIARES Latr. 



426. M. fraterna. Nigra nitida, tenniter parce pnbesoen?, tho- 

 race transverso, latitudine duplo breviore, lateribus valde rotundatis, 

 disco remote subtiliter punctato; elytris thorace baud latioribus sub- 

 tiliter punctatis, versus suturam obsolete bistriatis, macula subbasali 

 rufo-testacea ornatis ; snbtus rufo-picea, ore antennis pedibuaque rui".>- 

 testaceis, srepe paulo infuscatis, coxis anticis prosterno s. -paratis. I 

 •24— -26. 



Cistela fraterna Say, J. Ac. Nat. Bo. Phila. HI. 27" ; el. I.-. II. 

 Stigviatoma fraterna Lkc. Class. Col. N. America, 244. 

 Middle States; under the bark of Populus d&atata. The 

 thorax is vaguely impressed each side of the base, and more 



