PALTOTHEMIS LINEATIPES Karsch. 

 Plate XXXIX, fijr. 4. 



San Bernardino Coimtv, Califoniiii. May. --A. Kocl.el,.. collrctor." 



Leno-th, 23 mm.; ahdomen. 14 mm.: hiiul tVmur. (I imn.: width of 

 head. <!.5 mm.: of abdonuMi, it mm. 



A smooth blackish spocios, paler ventrally. with yellowish. l)asal 

 rinus (,„ tVniora and tibia\ Head wider than lono-, with eyes not very 

 pi-ominent, well rouncUHl: a very obtuse frontal ridg-e aerass the faee 

 before which the face' is vertical, behind whieii, sloping. The curve 

 of the very ol)tuse and scurfy pubescent hind anole.s of the head 

 l)eginning at the eye and ending- upon the straight hind margin. 

 Labium broad, the hinge reaching posteriorly betw^een the Ijases of 

 the middle legs, median lo])e prominent, spinulose on margin; lateral 

 lobes ample, each with 7-8 large obtuse teeth on opposed lateral mar- 

 gins, the uppermost double, the others separated by deep notches, 

 each armed with about four graduated spinules at tip internally; mov- 

 able hook stouter, but hardly longer than setie; lateral seta- 9;^ mental 

 set* 14-15 each side in a regular series, longest in the middle. 



Legs short smooth; wing cases reaching the base of abdominal seg- 

 ment 7. 



Abdomen broad, depressed, most nai-rowed posteriorly on the ninth 

 segment, tenth segment short, half as long as the ninth, but not 

 included in the ninth. Dorsal hooks on segments 2-6 erect diminish- 

 ing in size from the front, on 6 very rudimentary, a trace on 7, want- 

 ing on 8-10; all hidden between the wing cases. Lateral spines on 

 segments 8 and short, sharp, straight, those of the ninth segment 

 not reaching the level of the apex of the tenth segment on the ventral 

 side. Appendages short stout, as long as the ninth segment on its 

 ventral side; superiors and inferiors equal; laterals one-third shorter; 

 the inferiors spinose on lateral mai-gins; the superior thick at base 

 with a strongly arcuate, median longitudinal, carina. 



This singular nymph, so suggestive of the Cordulina' in the form of 

 its body and in the large teeth, higher than wide, on the op])osed 

 edges of the lateral labial lobes, w^as so puzzling to me 1 could not . 

 resist the temptation to remove the wings of one side from the solitary 

 specimen. A moment's examination of the venation shown was 

 enough to settle its identity. 



DYTHEMIS VELOX Hagen ? 



I 'late XLJI. lig. 2. 



There is a single nymph in the National ^Museum that 1 take to Ix'long 

 to this species. It is from Sand River. San Marcos, Texas, and was 

 collected March 24. iSHit. Tt is apparently not ([uite grown. 



