NO. 1371. 



NEW DRAGON-FLY NYMl'IIti—NEEDIIAM. 



703 



Fig. 3.— Labu'M of nymph of 

 okthemis ferrrginf,.\, from 



WITHIN. 



with small eyes capping- the aiitero-lateral angles, scjirccly narrowed 

 on the sides before the o))tusi' hind angles; hind margin a little eon- 

 cave; frons very hairy. Labium (tig. ;-5) short, hinge reaching between 

 the bases of the fore legs. ^Median lobe of the mentum moderately 

 prominent, with a strongly crenuhite front border, the crenuhitions 

 increasing in size on either side up to the base of the prominent median 

 tooth. jNIental sehe about lO each side, the iimermost indistinct, the 

 fourth (counting- from the side) longest, the Hfth and succe<>ding ones 

 suddenly shorter. Lateral lobes moderate, lateral set.v s, hook mod- 

 erate, teeth s(>rrate, each armed witli three 

 or four graduated spiiudes. 



Frothorax with high and well-exposed 

 spiracles. Legs rather short and very hairy; 

 held close to the body in locomotion. "Wing- 

 cases reaching posteriorly as far as the sixth 

 abdominal segment. 



Abdomen somewhat triquetral, widest in 

 the middle and tapering- gradually to the 

 apex, without dorsal hooks but wntli dorsal 

 tufts of long hair replacing- hooks on seg- 

 ments -i-T. Lateral spines on segments 8 

 and i*. of nearly equal size and in length 

 equaling- about one fourth the length of 

 their respective segments. Segments 8 and concave on their dorsal 

 apical margins and 10 annular. Appendages as long as segments 8-10 

 on the dorsal side (about as long as 1> and 10 on the ventral side), 

 spinous margined, slender and sharp, the laterals less than half as long- 

 as the others. 



There are traces of single black bands on the sides of the thorax 

 and near the apex of the abdomen, ending upon the base of the lateral 

 appendages. Base of the superior appendage ))lack. 



ORTHETRUM LEPTURUM Burmeister ? 

 Plate XLl, ti>;s. 4, 5. 



Twenty-nine specimens, some in very bad condition. Buitenzorg, 

 Java, D. (t. Fairchild: also a number of imagos from the same 

 locality. 



N3^mph (apparently nearly grown). Lengtii. 1 7 nun. : witltii of heail, 

 4 mm.: of abdomen, .■).5 mm. 



Body slender, not depressed, with sides nearly parallel, and sharply 

 pointed abdomeji. Head cuV)ical, concave in front between the high, 

 prominent eyes. Face and hind angles hairy; eyes situated before the 

 middle of the length of th(» head, the sides behind them nearly straight 

 and parallel as far as the rounded hind angles, hind margin scarcely 

 concave. Labium moderate, hinge reaching ])osteriorly to the meso- 

 thorax, median lobe prominent, with a l)rownish middle tooth, and 

 Froc. N. :M. vol. xxvii— 03 41> 



