146 LE CONTE.— LONGICORN COLEOPTERA 



lono- as all the others united. The femora are never clavate: the anterior legs 

 frequently long, and the prominence on the outer edge of the intermediate tibiae very- 

 distinct. The ligula is sometimes entire (Ptychodes) and sometimes emarginate 

 (Dorcaschema). 



PTYCHODES Serv. Ann. Ent. 



Antennae subtus pilosse, articulo 3'° longissimo. 

 Elytra apice rotundata, spina suturali armata. 

 Femora minime clavata. 



The eyes in this genus are nearly divided, the upper part being narrow and 

 obliq\ie, connected with the lower part by a mere line. 



1. P. TRiLiNEATUS, cinereo-fulvus breviter pubescens capite lateribus, thorace lateribus lineaque mediali, 

 elytris lateribus vittaque communi suturali irregulari niveis, elytris ante medium parce grossius punctatis. 

 Long. •8—1-25. 

 Mas antennis corpore triplo longiores, articulo ultimo longissimo; pedibus anticis elongatis, eljtris a humeris 

 postice angustatis. 



Femina antennis corpore longiores, elytris subparallelis. 



Ptycliodes vittatus Hald. 53. 



Saperda vittata Fabr. Ent. Syst. (1792) : Syst. El. 2, 322. 



Ccramhyx trilineata Lin. Mantissa, 532; Syst. Nat. Ed. Gmel. p. 1840 : Drury 1, tab. 41. 



Louisiana and Mexico, on fig trees. Dr. Schaum and Mr. Guex. Fabr. cites 

 Olivier, No. 67, tab. 19, fig, 142, which is there named Ceramhyx iigrinus, and does 

 not appear to represent our insect. I cannot find the precise date of the first 

 publication of the species by Linnaeus, but it is evidently anterior to Fabricius' work, 

 and is so considered by Fairemaire in a recent number of Guerin's Mag. et Revue de 

 Zoologie, where this species is mentioned as occurring in Polynesia. 



HETCEMIS Hald. jDej. 



Antennae non pilosae, articulo 3'o longissimo. 

 Elytra apice acuminata. 

 Femora paulo clavata. 



The last joint of the tarsi is less elongated in this genus than in the preceding. 



1. H. ciNEREA, nigra, pube brevi depressa cinerea dense vestita, capite lineis tribus, thorace vitta 

 longitudinali, humerisque denudatis nigris, thorace transversim leviter bi-impressa, elytris fere ad apicem 

 parce punctatis, antennis nigris. Long. -45. 



Mas antennis corpore duplo longioribus, articulo ultimo longiore. 



Saperda cinerea 01. 68, pi. 3, 35. 



Saperda trilineata Say. J. Ac. 5, 273. 



Heia^mis iuglandis Hald. 54. 



