702 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvii. 



CROCOTHEMIS SERVILIA Drury? 

 Plate XLI, Hg. 3. 



Two nymphs .somewhat similar to the preceding-, apparently grown, 

 smaller. 



Length, 13.5 mm. ; abdomen, 8.5 mm. ; hind femur, 4 mm. ; width of 

 head, 4 nun. ; of abdomen, G mm. 



Head pentagonal, straight l)ehind, sides sloping from the laterally 

 prominent ej'es, front somewhat depressed; all smooth except the hind 

 angles inferiorh'. Labium short; median lobe with front margin 

 produced into a median obtuse middle angle, and with spinose mar- 

 gins. Mental seta3 11-12 each side, the seventh (counting from the 

 side) longest; lateral setse 6 with an additional basal axial spinule; 

 movable hook longer and stronger than the seta?, attenuate to the 

 slightly incurved apex; teeth on opposed edges of lateral lobes small, 

 serrate spinulose — each with three to four graduated spinules. 



Legs long, thin, nearl}' bare, longitudinally grooved. Wing cases 

 reaching the middle of the seventh abdominal segment. 



Abdomen sharply triquetral, widest in the middle, oval in outline. 

 Lateral spines on segments 8 and 9, stout, those on the ninth segment 

 about attaining the level of the apex of the tenth segment. Dorsal 

 hooks on segments 3-9, erect and narrower in front, becoming 

 declined and broader at l^ase posteriorly; all sharp, longest on seg- 

 ment 6. Appendages longer than the last two segments on their dorsal 

 side, sharp-edged, the superior slightly declined at tip, laterals j^aler, 

 one-third as long. 



The reference of these n3^mphs to this species is made with mi.sgiv- 

 ings. It can only be said, therefore, that imagos of this species were 

 sent by D. G. Fairchild from the same localit}^, Buitenzorg, Java, and 

 that in the venation rather scantily evidenced l>y markings on the wing 

 sheaths there appear to be no serious disagreements. The nymphs 

 seem, however, rather too small. The reference is very doubtful. 



ORTHEMIS FERRUGINEA Fabricius. 



This species, which is common through most parts of tropical 

 America, was bred for me b}' ]VIr. F. G. Schaupp, at Shovel Mount, 

 Texas, in August and September, 1897, and bred specimens are in the 

 National Museum and in my own collection. Its nymph is very simi- 

 lar to the nymphs of PhithinU and Ladona^ and agrees with them in 

 having the front border of the median lobe of the labium crenulate; 

 but it difi'ers from both in lacking dorsal hooks, and its abdominal 

 appendages are much longer than in Plathemh. 



Length, 22 mm.; abdomen, 13 mm.; hind femur, 5.5 mm.; width of 

 head, 5.5 mm.; of abdomen, 7 mm. 



Body lanceolate-cylindric, little depressed. Head somewhat cubical. 



