1851.] 3i5 



12. P. p u n c t i c o 1 ] i s, piceus capite parcius punctato, ore flavo, thorace 

 flavo capite angustiore, latitudine non breviore, parce punctato antrorsum angus- 

 tato, lateribus subrotundatis late marginatis, medio canaliculato, nigro-vittato, 

 elytris dense rugosis, sutura, margine, abdonninis marginibus pedibusque pallidis, 

 fennoribus saepius apice nigris. Long. -35. 



A common Southern species ; the black on the femora extends about one-third 

 of the length ; the variety without this femoral spot is rare. 



13. P. b r u n n i c 1 1 i s . Cantharis hrunnicoUis Fabr. Syst. El. 1, 298. 

 Georgia, rare. This species nearly resembles the last, but the thorax is longer, 

 not at all rounded on the sides, which are jiarallel, and it has no dorsal dark 

 spot. The legs are black ; the femora rufous at base for two-thirds their length. 



b. Thorax angustius marginato, ungues basi dentati ; palpi art. ult. 

 triangulari. 



14. P. c a V i c o 1 1 i s, supra pallidus, capite dense punctato pone oculos 

 nigro, thorace parce punctato, elongato, lateribus rectis, angustius marginatis, 

 antice posticeque excavatis, disco longitudinaliter valde excavato, leviter infus- 

 cato, elytris minus subtiliter scabro-punctatis, subtus piceus, antennarum basi 

 pedibusque pallidis. Long. -25. 



San Diego, California. 



15. P. puncticollis. Podaints Tnarghiellus Lee. Agassiz' Lake 

 Superior, 229. Malthacus puncticollis Kirby, F. Bor. Am. 247. Eagle Harbor 

 Lake Superior. 



16. P. p u n c t a t u s Lee. ibid. 229. With the preceding. 



17. P. p u b e r u 1 u s Lee. 1. c. 229. Lake Superior. 



20. P. 1 ae vi c o 1 1 i s Lee. 1. c. 227 ; Malthacus Icevicollis Kirby. F. Bor. 

 Am. 24S. Lake Superior : the disc of the thorax is sometimes rufous, black only 

 at the base and apex. 



Malthinus Latr. 



Antennae tenues, articulo 2ndo tertio vix breviore ; palpi maxillares articulo 

 2"<lo elongato, ultimo ovali apice acuto ; tarsi postici articulis gradatim breviori- 

 bus, 4<o omnium bilobato, unguiculari brevi, unguibus integris ; caput pone oculos 

 angustatum ; elytra abdomine breviora. 



a. Caput pone oculos valde angustatum, elytra seriatim punctata. 



1. M. occipitalis, pallide flavus, capite pone oculos nigro, thorace 

 non transverso, antrorsum angustato, lateribus rotundato, minus dense punctato, 

 valde canaliculato medio fusco vittato, antice transversim impressis, elytris sat 

 dense seriatim punctatis,testaceis, apice anguste flavis. Long. -1. 



S. Carolina, Dr. Zimmerman. 



2. M. difficilis, pallide flavus, capite pone oculos vix infuscato, 

 thorace subtransverso, antrorsum angustato, lateribus rotundato, parce punctato, 

 canaliculato, antice transversim impresso, elytris albicantibus, seriatim punctatis, 

 apice late flavis. Long. -l. 



These two species are very closely allied, yet the differences in the form of 

 the thorax are sufficient to distinguish them. I have received them from Dr. 

 Zimmerman. 



