NEW DRAGON-FLY NYMPILS—NEEDIIAM. 687 



tuiv are represented by Nos. 1, 2, S, 14, 16, 18, 25, 27, 29, and 32 of 

 the list. In addition to the above there are inchidcd in this paper 

 additional descri[)ti\e notes oriio-ures, or both, of the t'ollowinu- species 

 which have alreadv been noticed elsewhere: 



Species. Locality. Collector. 



37. Ejwplitlialmia elegans Japan Ke v. C. M. Clark 



38. I>t/tlifiiiixfi(!iaj-f New Mexico T. D. A. Cockereil. 



39. I'diitdid ildrtscens lava 1». fi. Fairfhikl. 



40. IIi/ponri(ni lugens New Mi'xico '1". \^, \ . ( '(.ciciTcll 



XaiiK^s followed by ( in the a])Ove list are of doubtful speeitie deter- 

 mination; the species marked with * were bred by the collector named. 

 That so many not bred are not marked with i is due to the fact that 

 I have been able to examine satisfactorily the venation in the nym})hal 

 wings and to reeog-nize the species thereby. This means of determin- 

 ing miscellaneous nymphs is of remarkable value. It has not been 

 used l)y other authors, and was not used ))v myself in the work done 

 for my earlier papers. Its application requires well-preserved speci- 

 mens old enough to have the adult venation well developed 3'et not 

 near enough transformation for the wings to be crumpled within their 

 sheaths. If the cleaner, more transparent (more recently moulted) 

 nymphs be selected, and their wings carefully removed by cutting off 

 at the base with a sharp razor, mounted and examined with a micro- 

 scope, the venation may be studied in them almost as well as in the 

 adult. Save for ultimate fusions (as of the sectors of the areulus) the 

 correspondence is exact. 



SuTj family GrC>^\^T>JJ^ll<f A^l. 



GOMPHOIDES STIGMATUS Say. 



Plate XXXVIII, tig. 1. 



Nymphs and exuviae and imagos, the last in .some munbei's. from 

 Shovel Mount, Texas, collected by Mr. F. U. Schau})}). 



Length 34 mm., abdomen 28 mm., hind femur 0.0 mm.: width of 

 head ♦> mm., of a))domen T mm. 



Body elongate, depressed cylindric. hairy at the sides. Head thick, 

 pointed and declined in front, with .scar-like corrugations l)ehind the 

 eves, and a conspicuous bare .scar on eithei- side of the median line in 

 the rear. Antenna' declined upon the lal)rum, the two ba.sal segments 

 globular, the second half :is large as the first, the third twice as long 

 as both ])asal together. (U'i)ressed, clavat(>. incurved at the ajuw. and 

 scurfy hairy along its thick margins, the fourth segment a con.spicuous 

 upturned conic rudiment about as long as the second segment. Labium 

 (Plate XLTIL fig. I) of moderate size, the hinge reaching po.steriorly as 

 far as the mesothorax. mentum v»'ry gradually widened to the bases of 

 Proc. N. M. vol. xxvii— 03 48 



