( <>u:oi'Ti:i;A MTinri.m.E. l'.r. 



Family BYRRHID^E Leach. 



NOSOl>KXI>l;<>N T Latreille. 



NOSODENURON TRITAVUM. 

 I'l. 7, Fitr. 30. 



A single spec! ii is preserved, a little larger and a littl- stouter than 



inn- N. nnicolor, and which shows the under surface of the bodv with tin- 

 head In-lit under and with the elytra! markings showing through to a certain 

 extent. The hend appears to be siiiuuth; four segments are shown In-hind 

 the hind ro\;e, occupying about one-third of the abdomen, and, exn-p- 

 fur the sli-htlv longer posterior segment, of equal length and all unifunnlv, 

 profnseh -, and miniitt.-ly punctate. The elytra show here and there si-n- 

 of faintlv impressed distant stria-, which do not appear on tin- plate. 



Length of I)M.ly, 5' um : breadth, 3.6 mm ; distance apart of elytral strue, 



A .)tlllrl 



Green River, Wyoming. One specimen, No. 86 (Dr. A. S. Packard 

 Family NITIDULIDyE Leach. 

 1'HEXOLIA Erichson. 

 PHKNOLIA INCAPAX. 



Pi. 7, Fig. 23. 



I'heiiolin iiic'iiiiuc Scudd., Bull. U. S. Gcol. Googr. Surv. Terr.. II 



Represented milv l>y a single specimen and its reverse, showing the 

 under siiri'aci- .if th.- ln.dy, tnnn which the app.-nda--.-s ha\-.- been torn. It 

 cl.i^.-lv n-s.-iiil>les in si/..-, form, and tin- relation of the parts P. gro".i 

 i Falir. ), litit ditl'.-rs from it in the character of the under surface of tin- l>odv, 

 which in the fossil species is very minutely and very faintly punctulate, 

 and the posterior edifes of the seinm-nts are not raised. 



Length of fragment, 5 !' abdomen, 2.3"" n ; breadth of sain.-, i 



(Ji-e.-n Ki\.-r. Wyoming. One specimen, Nos. 133 and l.T_!"l 1 

 A. 



