OF AMERICA NORTH OF MEXICO. 19 



11. A. DiscoiDEus. — Rufus punctatus, capite postpectore, pedibus maculaque suturali dilatata nigris. 

 Long. "5. 

 Say 1. c. Vol. iii. p. 4-11 . Callidium. 



Mississippi. 



Group 6. 



This group only differs from the last in having the femora strongly clavate. The 

 body is frequently very long and linear, and the elytra occasionally abbreviated or 

 subulate. The palpi are not at all dilated, by vi^hich character it is separated from 

 the next group. It seems to lead towards the Callidia : and contains several genera 

 in which the anterior cox83 assume the subtransverse form, which becomes constant 

 in the tenth and eleventh groups. 



ANCYLOCERA, Serv. 



Antenntc ll-articulatsc, glabrae. 



Palpi breves aequales, articulo ultimo ovali. 



Acetabula antica rotundata. 



Femora valde elongata, subito clavata ;. tarsi postici articulo l"^" vix longiore. 



Thorax cylindricus. 



The body is elongate and cylindrical, scarcely pubescent above. The head is very 

 short and obtuse. The antennae of the males are elongate : in the females they are 

 short and strongly serrate. 



1. A. RUGicoLLis. — Nigra, thorace latitudine plus dupio longiore, grosse punctato, transversimque rugoso, 

 interstitiis subtiliter punctulatis, elytris dorso planiusculis, sutura elevata, grosse subseriatira punctatis, 

 sanguineis apice truncatis, abdomine sanguineo. Long. '4. 



Gnomon rugicollis, Fabr. 



Saperda hicolor, Oliv. pi. 3, fig. 25. 



Georgia and Carolina. I have seen a specimen with pale yellow elytra, but not 

 having been able to compare it with others, I do not know whether it is distinct. 



TINOPUS. 



Antennae filiformes, glabrje, ll-articulatae. 



Palpi breves, asquales, articulo ultimo ovali. 



Prosternum planum non prominulum. 



Pedes longissimi ; femora apice subito clavata ; tarsi postici articulo 1™° elongato. 



Acetabula antica rotundata. 



Thorax elongatus, medio paulo latior. 



The body is linear, slightly pubescent and somewhat depressed ; the elytra are 

 margined at the base, with prominent humeri, and truncate obliquely at the tip. 

 There are South American and Mexican species resembling ours, but much larger. 



