HEMIPTERA HOMOPTERA JASSIDES. 309 



TIIAMXnTKTTIX Zetterstedt 



No so,- ', i of this genus have been hitherto recognized am. .ni: fossil 

 insects. The larger species n -ribed certainly belong lien- <>r in the 



immediate virinitv, tin- nenration ot' both le^mina and hind win^s d..sdv 

 agreeing, as well as sudi other details of bodily structure as can ; 

 Tlie small species is placed here \vitli m >re doubt, since it is too poorly pre- 

 served to determine with any mniideuce. 



Tabli'i'i : !' Thamnotettix. 



Larger species; mor.- n Im^tli. 



IJi'lai i vd y -t.> ii bodied, .vii b tegmiua ba w limail 1. T. muiilntn. 



Relativoly slcmler Imdicil with i'>ly more tliun I Urn- times as long as broad. 



'.'. /'. tinnnitti. 

 Smaller species; loss than three inilliinctrix in h njjtli :i. T. fimdi. 



I. THAMNOTKTTIX MUTILATA. 

 n. T, KI-. c. 



A single specimen is preserved, sliMwinjjf only a part of the head Init 

 tl\p whole dorsal view of the rest of the body, with one of the tegniinu 

 partly expanded. The body is long ovoid, verv regular in shape with full 

 abdomen, hardly pinched posteriorly, but. with full roundeil curve. The 

 thorax is transverse, and the scutellum largo for this genus, being if anv 

 thing a little longer than the thorax The tegmiua are barely three times 

 as long as broad, with interrupted dusky m along the outer half of the 



costal margin, and slight signs of the same along the inner margin. The 

 hind tiMa' are obscurely seen through the body, and appear as if very 

 dense] \- spined with excessively minute and sllort spines, very dill'ereiit in 

 character from those of living types. 



Length of body, 4.55 mn> ; breadih. l.i 1 : length of tegmina, ;i.7o""" ; 



breadth, 1.25 mm . 



Green River, \V\oming. (>ne specimen, Xo. 7."., 1'rof. L. A. Lee. 



2. TlIAM.NoTKTTIX CAN.MM'TI. 



I'l. ti, I'i-. 33; I'l. 7, I-'i-. 6. 



Two specimens, dilfering a lillle in six.e, seem to liel.mj- to.r.-ther. lioth 

 preserved in a similar manner, showing a dor-al \ie\v with spread tegminu, 

 and wind's, though in one case par! was covered when the plate ua> drawn. 

 The liodv i> rather slender, the a'ndom,-n tolerably lull, Init pinched 



