98 TERTIAKY KHYNCHOPHOEOUy COLEUrTEKA. 



Lengtli, excluding- mstniiii, (i"""; rostrum, 1"""; elytni, 4-25"""5 height 

 of Ijo.ly, 3 ■2""" 



Fk)ris.saut, Cohirado. ( )]ie specimen, No. 3011, Mr. 1\. I). Lacoe. 



I take pleasure in naming this insect after my correspondent, Dr. B. 



Foerster, of Mulhouse, Alsatia, wliose recent researches upon the fauna, and 



especially the insect-fauna, of the Oligocene of liis district are well known 



and im[)ortant. 



Cleonus degeneratus. 



PI. II, Fig. 22. 



Head faintly and very tinely punctate, the eye very large, occupying, 

 as seen on a side view, the entire front of the head; I'ostrum considerably 

 longer than the head, rather slender, equal throughout, considerably arcu- 

 ate. Thorax sharply, deeply, profusely punctate. Ehtral striiv moderately 

 slender, deej), punctate throughout. 



Length, excluding rostrum, n-f)'"'"; rostrum, 1-2"""; elytra, 4"""; height 

 of body, 2-5""". 



Florissant, Colorado. One si)ecimen, Nos. 260'J and 3129. 



Tribe ERIRHININI. 



No tribe of Curculionin;e shows such a variety of structural forms in 

 the Tertiar}^ deposits, whether of Europe or America, as this. In Europe 

 no less than nine genera, with thirteen species, have lieen recognized, namely: 

 Bagous, Avith three species at Brunstatt and Corent; Hydronomus, one spe- 

 cies at Aix; Tanysphyrus, the same; Erirhinus, rhe same; Notaris, recog- 

 nized by Curtis at Aix; Dorytomus, recognized by Serres at Aix; Erycus, 

 two species in the Pleistocene of H(")sbacli; Smicroiivx, one species at Brun- 

 statt; and Erirhinoides, an nncharacterized extinct genus, with one species 

 in amber. In America we lind seven genera and nine species, all of which, 

 Avith a single exception, come from Florissanr. < >f the genera found also in 

 the Eui'opean Tertiarii's, we have Dorytomus, with two sjiecies; Erycus and 

 Erirhinus, each witli one; l)esi(les these Grypidius, with one species, and 

 Procas, witli two, one of which occurs only in the Gosiute fauna; while 

 there are also two extinct genera, witli one species each, Numitor and 

 Bmicrorhynchus. 



