OTiUlJUYNClllD.E — PUYLL015IINI. 57 



Tlic .s|)C'cio.s tVom tlic luK'ky iiKiuntaiii Tcrtiiirics incluilcd here are 

 known only l)y their elytra, and are c<>n.sef|iientlv not placed here with any 

 eertainty. They are, however, very .similar to, th(jugh coarser in their 

 scnlptnrc than, other remains referred to the allied jrenus Scvthropus, 

 tin- latter of which are regarded as more definitely placed tVoiii tin- testi- 

 mony of other parts of their structnre. 



Table of the spccicx of PhyUohiux. 



Iiit<'rs])a('Os hotweon elytial stn'ie tint or l)i-oa<lly lonmled. 



Stiial inuK'tures ol' elytra very V.wav and coarse, as wide as or wider than the 



iiitcrs|)aoes antcccxxor. 



Stiial paneturcs of elytra only moderately larjjo, narrower than the inter- 

 spaces curreruriux. 



Interspaces between elytra! strise with a median carina arux. 



PliyLLOTilUS ANTECESSOR. 

 I'l. 1\, 1% 16. 



A single elytron with its reverse is all that is preserved. It is a little 

 les.s than two and a qnarter times as long as broad, gentlv vaulted, iiearlv 

 straight, bnt with a scarcely ])erce[)tible arcnation, the hmneral angle scarcelv 

 rounded, the apex rounded subaciiminate. There are ten series of large, 

 circular puncta, as large as or larger than the intervening interspaces, 

 abruptlv and rather lieavilv impressed, those in each mw separated from 

 their neighbors by about the same distance as those of neighboring rows, 

 but irregular, and witli the intervening sjiace ])arely chaimeled. Inter- 

 spaces ihit or })roadly arched, smooth. 



Length of elytron, 4"'"'; breadth, is""". 



Roan mountains, western Coloiado, from the inchest beds at crest of 

 bluff overlooking head of Ea.st Salt creek. One s])eciinen, Nos. 2()4 and 

 301, U. 8. Geological Survey. 



PnYLLOlUr.S ("ARCERAKIUS. 



I'l. IX, Fig. 11. 



Only elytra are known. Thev differ from the pnceding species, prin- 

 cipally in having the markings less coarse. The breadth is contained a little 



