CUKCU LIGNUM'] — ("rUCULIONlN,^-: — HYLOKIIXI. 91 



PacHYLOBIUS DEPR/EOATIS. 



n. X, Fip-. 12. 



Tliis sj)e('ios is also represented (Hilv hv single clytrn, whicli ijiffci- fnnii 

 the same parts in the hist species only in Ix-iin^- hn-j:cr, sk-nderer, and of a 

 coarser sculpture. They are almost three times long-er than hi-oad, with 

 othci'wisc (it (juitc the same sliape as in /'. citnijircssus. 'i'hc stria' ai'c the 

 same as there, t'adin;^- in the same way, but the pmicta arc hca\icr and 

 coarser, and there is a greater diti'erence hetwecn the hasc and apex, since 

 they vanish completely j)osteriorly. 



Length of elytra, G-G-7-S""" ; breadth, ■J-3--J-.S""". 



Iioan nioinitains, western Colorado, from the richest beds at tlu- crest 

 ot' tlic ridge opposite head of East Salt creek. One specimen. No. 1(143, U. 

 S. Geolog'ical Survey. From nesu- the same beds. Three specimens, Nos. 

 23, o!», 1»7, U. S. Geological Survey. 



TTYLORTITS Germar. 



A ofenus widely spread thoug'h not \('rv numerous in species, foiind 

 mostly in the l)oreal parts of the uortliern heini>pheie and living upon 

 coniferous trees. Three species are found in North America and occur unK 

 east of the Rocky mountains, but from Canada t<> the Gulf. Haifa dozen 

 species have been described from the European Tertiaries, three from Aix, 

 and one each from Rott, Corent, and Diirnten, the latter in an interglacial 

 deposit where only an elytron was found. In .Vmerica we tind three; species, 

 one at Floris.sant, somewhat resend)ling' tlu! rather im|)ei-fcct Corent 

 species, but with a fuller thorax, and two from Green River, which do not 

 appear to approach any of the European fossils very closely. 



Table of the upenes of Uylohius. 



Eye fully twice as high as long provectux. 



Eye much less than twice as high as long. 



Klytral stri;i> delicate, very faintly and tiiicly pnnctato; beak slender. ./wAvovZ/i. 



Elytral stria' less delicate, distinctly and deeply tliongli tiiiely punctate; beak 

 stout lacoei. 



