DESCRIPTIONS OF NEW SPECIES. 223 



Black, prothorax distinctly narrowed in front, pubescence short, a. Elytra 



dirty testaceous, luridipennia Ilald. ; 67. mdtabilis. 



Black, prothorax nearly square, pubescence long, erect, fuzzy. 



G8. QDADRICOLLIS. 



b. Elytra rough with elevated points or granules; 



Very black, thorax feebly bisinuate on the sides ; antennae not carinated, 

 11th joint not appeudiculate. 69. aspeka. 



F. Prothorax constricted before and behind, wider at base, hind angles 

 not prolonged ; elytra wider, parallel, rounded at tip ; head suddenly 

 narrowed far behind the eyes, but not constricted, hind angles 

 therefore long, broadly rounded ; eyes not einarginate, antennae 

 inserted a little behind the front margin of the eyes, slender, with 

 4^ joints punctured, the remainder sericeous, 11th joint simple ; 

 geua? rather short, palpi with last joint triangular, truncate, as in 

 L. vittata; this group differs from Acmaeops chiefly by the position 

 of the antenna? ; 



Black, antenna? brown, front legs ferruginous, with knees, tip of tibiae, and 

 tarsi dark ; head and prothorax longer than wide, densely and finely 

 punctured, the latter subcanaliculate, with smooth narrow dorsal space. 



70. C0BITALIS. 



Prothorax not longer than wide, more densely punctured, elytra and legs 

 testaceous. 71. spuria. 



541. L,. gigas. Niger pubescens, prothorace dense subtiliter punctato, 

 dorso utrinque late deplanato, linea dorsali subelevata ; elytrislsete ful- 

 vis, quadrisulcatis, apice nigris, emarginatis, bispinosis. Long. 35 mm. 



The specimens commonly called L. emarginata from Texas 

 differ from the northern individuals by the prothorax much more 

 densely punctured, the disk more impressed each side, the dorsal 

 line more elevated, the posterior impression less curved, the middle 

 lobe of the base with a distinct transverse elevation near the 

 margin, and finally by the elytra being each marked with four 

 vague wide irrooves, reaching neither the base nor the tip, and 

 presenting somewhat the appearance observed in Tragidion. 



542. L.. soror. Testacea, flavo-pubescens, prothorace toto vel disco 

 solo nigro, postice vage impresso ; elytris fascia media alteraque ante 

 apicem nigris, apice acuminatis, occipite pectorisque lateribus nigris ; 

 antenuis validiusculis fuscis, vix annulatis. Long. 12 mm. 



California; Dr. Horn. This is so closely allied to the lighter 

 colored varieties of L. obliterata, that it might be viewed as a less 

 developed Southern race of that species. Nevertheless the elytra 

 are less distinctly obliquely truncate at tip, so as to become rather 

 rounded, and acutely acuminate ; the antennee are also stouter 



