44 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



plate of male triangular, with the lateral margins slightly convex in 

 the middle (scarcely shown in the figure), with a pair of slightly dis- 

 tant, short, longitudinal, subapical ridges; furcula consisting of a pair 

 of attingent, depressed, equal, parallel, blunt tipped fingers, less than 

 a third as long as the supra-anal plate; cerci simple, conical, pointed, 

 hardly half as long as the supraanal plate. 



Length of body, male, 13 mm., female, 20 mm.; antennae, male and 

 female, 7 mm.; hind femora, male, 9 mm., female, 10.5 mm. 



Four males, 5 females. Fort Worth, Tarrant County, Texas, May, 

 ([No. 705] U.S.N.M , Eiley collection); Columbus, Colorado County, 

 Texas, June 21 (the same); southwest Texas, Schaupp (L. Bruner); 

 Uvalde, Texas, last week of July, E. Palmer. 



This species resembles P. punctata to such a degree as with difficulty 

 to be distinguished from it, except by the abdominal appendages of the 

 male, which are remarkably distinct. There is no sign in the female of 

 the dark mediodorsal fusiform patch on the prouotuni, and the coloring 

 of the female in both species is very variable. 



There are two other forms of Paraidemona known to me, which I 

 deem probably distinct from either of the above, but being known 

 only by the female, I only allude to them. Both have relatively heavy 

 hind femora. 



One is almost wholly olivaceous, the abdominal carina marked with 

 yellow, and with yellow shades upon the sides of the dorsum of the 

 thorax; it comes from Carrizo Springs, Texas (U.S.N.M.). 



The other is almost wholly yellowish testaceous, with no dorsal stripe 

 and relatively feeble and fleeting lateral stripes; it comes from Dallas, 

 Texas (U.S.X.M.), and Venis Mecas, San Luis Potosi, Mexico, January 

 6, E. Palmer. 



13. AIDEMONA. 



(aidijfj-oar, modest.) 

 Aidemona BRUNXER, R6v. Syst. Orth., 1893, p. 145. 



Body compact, moderately slender, parallel sided but enlarged at the 

 mesothorax. Head not prominent, the vertex well rounded, rising 

 above the level of the prouotum, the space between the eyes narrow 

 but not very narrow, the face broadly rounded and a little retreating; 

 frontal costa a little prominent above, broad, much broader than the 

 interspace between the eyes, plane, percurrent, subequal, and heavily 

 punctate; eyes moderately prominent but little more so In the male 

 than in the female, rather large, broad ovate, much larger than the 

 subocular portion of the genae; antennae slender, rather shorter than 

 the head and pronotum together. Pronotum scarcely enlarging poste- 

 riorly, transversely quadrate, the dorsum plane or very feebly convex, 

 with the lateral lobes set sharply at right angles to it, but otherwise 

 with no raised lateral cariuae, a feeble median carina on metazona only, 



