DESCRIPTIONS OP NEW SPECIES. 199 



gente, margineque apicali tenui pallide flavo-pilosis ; antennis pedibus- 

 que (clava femorali excepta) ferrngineis ; fronte flavo-pilosa, umboue 

 elongata, plana, argute marginata, antice acuta. Long. 11 min. 



Ohio, one specimen, which I owe to the kindness of Mr. H. 

 Ulke. A very distinct species by the elytral markings, which are 

 narrow lines of mixed yellow and white hairs, and consist of the 

 entire suture, the usual curved fascia concave forwards about the 

 middle, an oblique line behind the middle, and the apical mar- 

 gin ; in front of the curved fascia is an oblique line running in- 

 wards and backwards from the humerus, but not attaining either 

 the margin or the sutural line. The four thoracic spots of yellow 

 hair are placed, two transverse ones on the front margin, and two 

 discoidal behind the middle. The femora are strongly clubbed, 

 and the hind pair extend to the tip of the abdomen. 



521. X. insignis. Nigro-piceus pnbescens, fronte, oculorum sinubus, 

 prothorace margme apicali et basali, elytrisque maculis solitis latis flavo- 

 pubescentibus, macula antica inclusa retrorsum iutus obliqua ; protho- 

 race rotundato, basi tubulatim constricto, subtiliter muricato; elytris 

 apice rotundatis ; frontis umbone bicarinata, antice subacuta, subtus 

 maculis et fasciis flavo-pubescentibus. Long. 20 mm. 



California, Dr. Horn. Our largest and most conspicuous spe- 

 cies ; easily known by the wide bright yellow markings, which 

 consist of : frontal spot, emargination of the eyes ; front and 

 hind margins of prothorax, (the former almost interrupted at the 

 middle) ; a basal spot near the scutellum, and joining the yellow 

 hind margin of that part ; a curved band commencing behind the 

 scutellum, running along the suture nearly to the middle, then 

 transverse and slightly curved forwards to the margin ; a slightly 

 oblique band behind the middle, and a broad apical margin ; 

 beneath, side spots of the pro- and metathorax, the posterior 

 half of the episterna of the metathorax, four broad bands on 

 the ventral segments, and the whole of the 5th segment are simi- 

 larly clothed with dense yellow pubescence. 



522. X. obliteratus. Nigro-piceus cinereo irroratus, prothorace 

 magis rotundato, snbtilius asperato, basi baud tubulatim constricto ; 

 elytris maculis solitis angustis testaceis indistinctis, macula antica 

 inclusa retrorsum intus obliqua ; elytris apice rotundatis, umbone fron- 

 tali latiore, antice obtusa, medio canaliculata, hand acute bicarinata ; 

 subtus immaculatus. Long. 15 mm. 



