392 



PSYCHE. 



[September, igo2 



3. Yellowish red, gaster 

 brown except at the base ; 

 peduncle shorter than the 

 very long node, which is 

 pointed above ; postpetiole 

 not as high as long. Sculp- 

 ture fainter than in No. i, 

 petiole and postpetiole punc- 

 tate, without rugae. 



subsp. longinodis Emery, 

 b. Interrugal spaces of head 

 regularly foveolate-punctate. 

 Color ferruginous red. Work- 

 ers polymorphic, /. e. with size 

 of head greatly varying. 



bad ins Latr. 

 Austin, Texas, May \o, 1902. 



Postscript. 



As the result of recent collecting trips 

 in Central and Trans-Pecos, Texas, I 

 am able to add the following brief notes 

 on some of the species of Pogonuviyrmex 

 of the above table and on a new species 

 and subspecies which came to light too 

 late to be included. 

 \| I. Pogoiw??iyrmex apache, sp. nov. 

 This is a fine orange-yellow species, 

 nearly as large as barbatns, with smooth 

 posterior angles to the head and without 

 epinotal spines. It is decidedly larger 

 and more robust than californicus, which 

 it resembles in sculpturing, and the 

 cone of the petiole is blunter and more 

 depressed. It differs from sancti-hyacin- 

 tlii in coloration and in having a less 

 deeply excised clypeus. Only four 

 isolated nests of apache were seen. 

 These were excavated in the dry, stony, 



adobe soil about Fort Davis in Jeff Davis 

 County. They were in the form of 

 small chaff-strewn mounds, 3-5 inches 

 across, perforated with an entrance 

 about J inch in diameter, and containing 

 hardly more than 25-50 workers. Near- 

 ly all the workers were busily engaged 

 carrying home grass-seeds. When run- 

 ning they carried the abdomen in a 

 peculiar elevated position. 

 V 2. P. occidentalis subsp. eomanc/ie, 

 subsp. nov. This form differs from the 

 typical oceidetttalis and resembles suhniti- 

 diis Emery in the less opaque surface 

 of the head and thorax. It is mainly 

 distinguished, however, by the very short 

 epinotal spines, which are hardly half as 

 long as those of the typical form. It 

 was discovered near Milano, Millan 

 County, in the sandy soil of the open 

 post-oak woods. Here it constructs 

 small mound-nests not more than 4-6 

 inches across and very unlike the great 

 gravel cones constructed by the typical 

 form in Wyoming and Colorado. There 

 were not more than 50 ants in a nest. 

 At Langtry, in Valverde County, small 

 colonies of the typical occidentalis were 

 seen inhabiting similar nests on a sandy 

 spot in the Caiion of the Rio Grande. 



3. P. sancti-hyacinthi. This species 

 is common at P"ort Davis, where it builds 

 small obscure nests among the disinte- 

 grating volcanic rocks on the summit of 

 the " Crouching Lion " (altitude about 

 5400 ft.). While running this species 

 does not carry the abdomen conspicu- 

 ously erect. 



4. P. dcscrtorum. Several fine nests 



