JAMES CHESTER BRADLEY 213 



Mutilla (Timulla) navasota u. sp. 



d'. Black, the aljclomen with its pubescence appearing orange rufous, the 

 ground color a trifle more red; head and posterior part of dorsum with erect 

 black hairs; head and dorsum in front of the tegulae with felted, cartridge- 

 buff pubescence, abdomen dorsally thickly covered with erect mars-orange 

 pubescence, concealing shorter appressed, cadmium-orange pubescence; wings 

 dark violaceous. Length 13 mm. 



Head coarsely, closely punctured; ocelli large, diameter of the posterior 

 pair .32 mm., their distance from the eyes .36 mm., from each other .66 mm., 

 from the front ocellus .26 mm.; face strongly elevated below the antennae; 

 it and the clypeus with a strong, concave, highly polished, impunctate, V- 

 shaped area, between which and the base of the mandibles the face is acicu- 

 late; inferior margin of the mandibles entire. 



Mesopleura with a deep obhque fossa, interruptednear the posterior margin; 

 mesosternum with a weak transverse callous spot, its anterior surface sloping, 

 punttate; under surface of the middle coxae with a callous spot, without sub- 

 apical tubercle, under surface of posterior coxae with a rather long carina. 

 Propodeum coarsely, rather shallowly reticulated, with a short median chan- 

 nel. 



Second ventral segment not ridged; fifth and sixth unarmed; seventh with 

 rudimentary tubercles; eighth with a very feeble obhque ridge; pygidium with- 

 out median impunctate ridge, but toward the apex with a strongly elevated 

 keel, the dorsal and caudal lines of which form a right angle. 



Holotype: Brazos County, Texas. Collection of jNIr. Xathan 

 Banks. 



Mutilla (Timulla) hexagona Say 



1S36. Mutilla hexagona Say, Bost. Journ. Nat. Hist., 1:295, cf. 

 /^1899. Mutilla hexagona Fox (pars). Trans. Amer. Ent. Soc, 2.5:270, cf . 

 1903. Mutilla saiji var. hoUensis JMelander, Trans. Amer. Ent. Soc, 29:324. 



cf . The ocellar measurements of an average of 10 specimens are: diam- 

 eter posterior ocelli .22 mm., their distance from the eyes .37 mm., from the 

 front ocellus .21 mm. There is a trifling variation in the individuals of this 

 species, the distance between eyes and ocelli exceeding the diameter of the 

 latter by an extreme range of from 1.5 to 1.77 times. 



9. Claret brown; legs except femoi-a beneath, antennae, petiole and 

 pygidium black; apex of each abdominal segment except the first ventral 

 with a band of silvery pubescence, interrupted medially on the third dorsal 

 and triangularly produced in the middle on the second dorsal; doreal segments 

 otherwise mostly covered with short black pubescence, giving way to brown, 

 red, and on the second, silvery pubescence on the sides; other pubescence sparse; 

 head and front of dorsum with erect black hairs; sides of thorax and venter 

 with a silvery sheen. 



Petiole with an inferior, anterior, truncate, process; pygidium with oblique 

 wrinkles, converging caudad. 



TRAXS. AM. ENT. SOC, XLII. 



