198 DESCRIPTIONS OF NEW SPECIES. 



the length of the abdomen, as well as by the fasciae of the elytra 

 being less numerous than in the allies of C. pictus, and by the 

 prothorax not being fasciate. 



CLYTIJS LAICH. 



519. C. lanifer. Niger, flavo-pubescens, prothorace elytrorumque 

 basi et sutura lougius flavo-villosis, illo latitudine paulo longiore, basi 

 constricto, lateribus subangulatim rotundatis, postice sinuatis, dense 

 grosse punctate, linea brevi dorsali laevi ; elytris sutura, fascia subbasali, 

 altera transversa ad medium, Siaqne obliqua ante apicem flavis ; scutello 

 dense flavo-villoso ; tibiis tarsisque ferrugineis. Long. 14 mm. 



Owen's Valley, California; Dr. Horn. In the $ the antennae 

 are a little more than half the length of the body, and the front 

 tarsi are much broader than in the 9 . The prothorax is quite 

 distinctly tubularly constricted, and sinuate on the sides near the 

 base ; the hind tarsi are less slender than in C. marginicollis ; 

 the 1st joint is longer than the 2d and 3d, but not as long as all 

 the others united. The front is short and rounded as in that spe- 

 cies. It belongs to the Ochrestes group, but differs from any of 

 the Mexican species which are thus far described. 



XYL.OTRECHUS CHEVR. 



The markings of the elytra in all the species of this genus may 

 be reduced to an elementary form, consisting of a scutellar spot, 

 an arcuated band extending along the suture to a little in front 

 of the middle ; an oblique band behind the middle, and the apical 

 margin, which are covered with pale or yellow hair. In front of 

 the arcuated band is inclosed a marking which is variable in form 

 being sometimes (e. g. colonus) a slender sinuated transverse line ; 

 sometimes, as in most of the species, a spot ; sometimes as in the 

 three following species a line, directed inwards and backwards, 

 but reaching neither margin nor suture. The bicarinated frontal 

 elevation also differs in form in the different species, and affords 

 good characters for distinguishing them. 



520. X. convergens. Fusco-piceus, cinereo-pubescens, prothorace 

 latitudine sublongiore, asperato, lateribus late rotundatis, basi tnbula- 

 tim constricto disco plagis 4 flavo-pilosis ornatis ; elytris apice late rotun- 

 datis, breviter mucronatis, sutura tola, linea hamata a basi ad medium 

 juxta suturam extensa, dein extrorsum antice curvata, strigam obli- 

 quam tennem includente, linea tenui pone medium extrorsum retrover- 



