1851.] 339 



1. P. 1 a t i c r n i s. Canthnris hiticornls Say. J. Ac. Nat. Sc. 5, 168 ; 

 Telep/mrus dubius Mels. Pr. Ac. Nat. Sc. 2, 304. Middle States; rare. 



2. p. 1 i m b a t n s , ater thorace subtransverso, rufo antice infnscato, late- 

 ribus marginatis, rectis pallidis. medio minute incisis, angulis posticis acutis, 

 elytris subtilius scabris, margine suturaque pallidis, abdominis segmentis pallido 

 marginatis, mandibulis tibiisque aiiticis testaceis. Long. 22" 



New Jersey; Mr. Guex. The antennae are less strongly serrate than in the 

 preceding. 



3. P. 1 n c i s u s, ater, thorace quadrato, antrorsum vix angustato, lateribus 

 anguste marginatis testaceis, ad medium acute incisis, Jisco nigro valde tri- 

 impresso, elytris scabris. Long. '25. 



Georgia; rare. Easily distinguished by its less transverse thorax, concave 

 in the middle, less narrowed, but more rounded at the apex, and more suddenly 

 incised at the middle of the lateral margin, which is much narrower. 



SiLis Charpentier, Hor. Ent.* 



Palpi articulo ultimo vixdilatato; antennae articulo Sndotninuto, S'o sequenti- 

 bus aequali ; thorax margine ad angulum posticum profuude inciso, appendice 

 clavato inferne munito; ungues ad basin vix dentatis. 



a. Antennse valde serratae. 



1. S. bidentata. Cantharis? bidentata Say. J. he. Nat. Sc. .5, 169 ; 

 <Sj7/s lepida iDej. Cat. 



Middle and Southern States. Say's description gives the second joint of the 

 antennae as being half the length of the third ; it is in reality much smaller. 



b. Antennae tenues, elongatae, vix serratae. 



2. S. longicornis Lee. Agassiz Lake Superior, 230. Sault Ste. 

 Marie. 



:}. S. d i f f ic i 1 i s Lee. 1. c. 230. 



Sta. Fe and Lake Superior; the teeth at the posterior angle of the thorax 

 are much more prolonged than in the last mentioned species. 



4. S. pa 1 1 e n s, piceus, thorace elytrisque flavo-pallidis, illo transverso, 

 marginato, medio fovea lata nigra minus profiinde impresso. ad angulos posticos 

 subito inciso, dente anteriore obtuso, posteriore acuto tenui, elytris subtiliter 

 scabris, sutura, margine scutelloque nigris. Long. -2. One specimen, San 

 Francisco. 



** Antennas articulo 2"'' maiusculo. 



Telephorus Geoff. 



Cantharis Fabr. 



Palpi articulo ultimo dilatato, securiformi; antenna; articulo 2"do tertio sesqui 

 breviore caput pone oculos vix angustatum; thorax margine integerrimo. 



This genus varies very much in the form of the claws of the tarsi, which are 

 sometimes entire, sometimes toothed at the base, and sometimes bifid; the two 

 latter forms run into each other, to such an extent, that this character cannot 



*I give the citation to Charpentier, as his description (1825) appears to be the 

 earliest. Megerle instituted the genus in 1821 in Dejean's Catalogue, which 

 cannot of course be quoted as authority. 



44 



