1854.] 219 



The second species of Argaleus (Pachyta attenuata Hald.) enters the genus An- 

 thophylax Lee. Piodes must be united with Acmaeops. Commencing then with 

 Rhagium, our genera of Lepturidae, having the front oblique, the mentum trape- 

 zoidal, and the gula emarginate each side of the mentum, may be thus arranged : 



1. Antennae ante oculares ; tibiae calcaribus ad apicem sitis ; 



a. Sterna gibba ; coxae anticae discretae Rhagium. 



b. Prosternum simplex ; coxae anticae contiguae ; oculi integerrimi ; 



Mesosternum protuberans Gaurotes. 



Mesosternum planum Acmaeops. 



2. Antennae vix interoculares ; 



a. Tibiae calcaribus ante apicem sitis Toxotus. 



b. Tibiae calcaribus ad apicem sitis ; 



Oculi mediocres ; elytra postice angustata Argaleus. 



Oculi magni ; elytra linearia Centrodera. 



2. Antennae interoculares ; oculi intus emarginati ; tibiae calc ad apicem sitis ; 



a. Palpi labiales dilatati Anthophylax. 



b. Palpi labiales maxillaribus non latiores. 



Antennae articulis externis utrinque impressis Typocerus. 

 Antennae 11-articulatae articulis haud impressis ; 



Thorax angulis posticis productis Strangalia. 



Thorax angulis posticis haud productis Leptura. 



The separation of the last two genera is evidently unnatural. The separation 

 of Centrodera and Argaleus is also on very slight characters, but as thus far 

 there is a peculiarity of appearance, which renders each easy of recognition, it 

 will be more convenient to permit them to remain distinct. The other genera 

 appears to be entirely natural. 



34. Taraxis Lee. (Agassiz* Lake Superior, 237) does not appear different from 

 Auchenia. 



35. Hemophilus f o s s o r Lee. (Journ. Acad. 2d, 1, 92) appears not to be re- 

 lated to Heliophilus, but to be a new genus near Opatrum ; Opatrum latima- 

 n us, described at the same time, is also referred incorrectly ; it is allied to and 

 perhaps congeneric with Leichenum. 



36. Pytho pallida Say, (Journ. Acad. 3, 271,) belongs to Adelina. 



37. Boletophagus tetraopes Newman, (Ent. Mag. 5, 378,) is Eledona d e- 

 pressa Randall, Bost. Journ. Nat. Hist. 2, 21 ; the last mentioned name has 

 priority by two months. 



38. Boletophagus silphides Newman, ibid, is on the other hand a species 

 of Peltis, (!!) so closely allied to P. dentata of Europe, that by Dejean it was 

 considered identical. 



39. In Psorodes Solier (Studi Entom. 167) has placed Helops contractus Beauv. 

 under the name P. inflata. The same insect was long ago made the type of a 

 special genus, Meracantha canadensis Kirby, (Fauna Bor. Am. 238.) The name 

 must therefore be Meracantha contract a. 



40. Stenochia gracilis Lee. (Ann. Lye. 5, 150) is allied to Allecula ; the 

 penultimate joint of the tarsi is lobed, and the ungues are serrate. 



41. Mycetochares ruficornis Mels. Proc. Acad. 3, 59, is a Melandryide, 

 congeneric with Hallomenus luridus Hald. 



42. The last named species does not appear sufficiently distinct from H. scapu- 

 laris Meis. Proc. Acad. 3, 57. 



43. Orchesia sericea Mels. ibid, upon which the genus Calasia Hald. is 

 constructed is a true Scraptia. 



44. Scraptia 1 ute a Hald. is not different from S. pallipes Mels. 



45. S. a mericana Hald. placed in the Cat. Descr. Col. p. 143, as synony- 

 mous with the last, is a different species. 



