NORTH OF MEXICO. 3(il 



1 . marginata, Lee, I loina Ann. Lye. V. 140; I toxemia Gen. Col. N. A., p. 



Similar in form to Noma, with the margin of the elytra i "e reflexed. 



I length .:!:'> inch. 



Found under Cottonwood bark, along the Gila and Colorado Rivers. 



MEROTEMNUS, . g. 



This name is suggested li>i an elongate Ulomide with entire epipleurae and slender 

 fronl tibiae, differing from CJlosonia in the epistoma more prominent, suture not impressed, 

 fronl not tuberculate. Femora clavate and flattened, emarginate at tip, and with a broad 

 tooth at the emargination, on the middle and hind femora. 



M. elongatus, elongate, sub-parallel, modi mvex shining, ferruginous brown. Head moderately con- 



rex, sparsely and finely punctured, not tuberculate, frontal suture nol impressed. Thorax sub-quadrate, one-fifth 

 broader than long, sides nearly parallel, very feebly rounded, margin distinct, slightly reflexed, apex emarginate, an- 

 gles no) prominent, i>a^ almost truncate, angles rectangular; iUm- sparsely and finely punctured. Elytra elon| 

 more than twice longer than broad, sides slightlj converging toward apex, base truncate on'eai h side, emarginate ai 

 middle, slightlj broader than base of thorax, angles rectangular; nnV entire and '>n<- short scutellar stria, moderately 

 punctured, interstices convex, si th. Beneath very finely and sparsely punctured. Body winged. 



Length .-M inch. 



The femora of this insect arc much more stronglj clavate than any other of our genera 

 ofUlomini. The anterior femur i> not emarginate near the apex, but slightly sinuous, 

 the middle and hind pairs distinctly emarginate, the tooth of the latter being quite large 

 and rather acute at tip. 



One specimen is known to me, presented to Dr. Leconte bj Mr. like, who received it 

 from California. 



MYCOTROGUS, . g. 



This genus differs from all our other genera ofUlomini in having the presternum pro- 

 longed, mucronate and with a deeply emai'ginate mesosternum. From Ereltu, Muls. il 

 differs in the tuberculate head, the convex mentum with the middle lobe rather promi- 

 nent in front. The third joint of the antenna' is longer than the fourth. The epipleurae 

 are entire, nearlj as broad at apex as at middle, the anterior tibiae dilated, verj finely 

 denticulate and slightly arcuate. The hind tarsi have the fii-st joint longer than the 

 -en. nd and third. Body winged. 



\\ pi ceil 1. depressed, piceous, black, shining. Head rather densely punctured, suture of epis- 

 toma impressed, epistoma and sides of front ferruginous. Thorax sparsely punctured, broader than long, feeblj con- 

 vex, sides i Icrately rounded and margined, gradually narrowing to apex, which is rather deeply emarginate, i 



prominent, nol acute; base strongly sinuate, hind angles rectangular. Elytra oval, one-half longer than broad, feebly 

 rounded on the sidi il middle and truncate a) sides; apex obtusely rounded. Disc with eight 



entire and a short Bcutellar stria of moderate punctures. Rtrire feebly impressed Beneath sparsel) and finely punc- 

 tured. Antenna' and legs palei 



Length .'.'I inch. 



