Io8 PSYCHE [June 



The long erect hairs are distribnted as in the worker, but are shorter and less conspicuous. 

 On the outer genital appendages there are numerous erect hairs, which, however, are less 

 robust and shorter than the hairs on the gastric segments. 



Head, thorax, and abdomen deep black as are also the mandibular teeth, and the femora 

 and tibiae except the articulations which are yellow. Mandibles, sides of cl}'peus, and tarsi 

 yellow. Antennae and genital valves more or less infuscated. Wings grayish hyaline with 

 gray nervures, more indistinct than in the female. 



This species wliich I dedicate to my former pupil, Mr. C. T. Brues, is 

 described from numerous males, females, and workers which I collected Dec. 19th, 

 1901, in Fresno Caiion, in the southern part of Presidio County, Texas. The 

 nests, more extensive and populous than those of P. melanderi, were found under 

 piles of stones, just above high water mark where the soil retains some moisture 

 during the dry season. P. bruesii is sufficiently distinct from all the described 

 American Prenolepis on account of the peculiar configuration of the male genital 

 appendages. 



10. Camponotus texanus, sp. nov. 



Worker maxima. Length 10-12 mm. 



Mandibles small, convex, 5-toothed. Head large, about as broad as long, distinctly wider 

 behind than in front, sides moderately convex, posterior border straight w'hen the head is 

 viewed squarely from the front. Clypeus a little longer than broad, not keeled in the mid- 

 dle, its anterior border with a shallow median excision bounded on either side by a promi- 

 nent tooth. Frontal area small, obscure. Frontal carinae prominent, lyrate. Front with a 

 median groove accentuated by a longitudinal depression towards its posterior end. Cheeks 

 rather uneven, with a deep impression or dimple at the lateral border of the clypeus. Eyes 

 broadly elliptical, flattened. Antennal scape barely reaching the posterior corner of the head, 

 slender and slightly flattened at the base, thicker and more cylindrical towards the distal 

 end; funiculus slender, consisting of joints more than twice as long as wide. Thoracic dor- 

 sum regularly arcuate in profile; pro- and mesonotum somewhat flattened dorsally, the 

 former distinctly carinate along its anterior border; pleurae, especially the meso- and meta- 

 pleurae compressed and flattened; epinotum with a short, slightly concave declivity passing 

 evenly into the rounded basal portion. Sutures, except those between the meso- and meta- 

 pleurae, distinct. Petiole thick, with convex anterior and very flat posterior surfaces, which 

 form a rather abrupt angle at the summit of the node. From behind the margin of the node 

 is evenly arcuate, passing without angles into the lateral contours. Gaster and legs of the 

 usual shape. 



Surface of body finely shagreened, smooth and shining, especially the posterior corners 

 of the head which are highlj' polished. Head covered with punctures, whicii are coarse 

 and conspicuous on the mandibles, clypeus, and cheeks but smaller and sparser on the 

 remainder of the head, and especially on the posterior angles. Vertex with eight foveolate 

 piligerous impressions in two rows of four each. Mesonotum with a few coarse piligerous 

 punctures near the middle of its dorsal surface. Legs rather finely punctate. 



