189I.] ENTOMOLOGICAL NEWS. 199 



differs appreciably only in the elongate second aristal joint, and 

 the vibrissae being inserted at a short distance above the oral 

 margin. Besides, Messrs. Brauer and von Bergenstamm have 

 erected several new genera which are founded on practically the 

 same characters." 



A NEW GENUS AND SPECIES OF ODONATA 

 FROM JAMAICA. 



By Philip P. Calvert. 

 ORTHOLESTES n. gen. 



Wings ceasing to be petioled just before the first postcostal 

 cross-vein. Median sector arising from the principal at less than 

 one-third the distance from the arculus to the nodus, the subnodal 

 one cell after the median. Quadrilateral distinctly trapezoidal, 

 superior side longer than one-half the inferior, internal side one- 

 third to one-fourth the inferior. Ultra-nodal sector unbroken, 

 or but very slightly angulated; subnodal and short sectors hardly 

 more angulated. Nodal sector arising from two-and-a-half to 

 four cells after the nodus. No supplementary sectors between 

 the median and short sectors. With supplementary sectors, 

 forming an irregular network (7-16 marginal cells), between the 

 subnodal and median sectors. Pterostigma three times as long 

 as broad. Hairs of the feet long. 



0. Clara n. sp. — Abdomen ^f 38 mm., 9 29-31. Hind wing J^ 29, 9 

 25-27. Yellow and dark brown or black. Labrum, epistoma and frons, 

 dark metallic blue. Abdomen dark brown, 3-7 with a yellow basal ring; 

 17-23 postcubitals. 



(^. — Superior appendages forcipated, dilated to form two rounded, in- 

 ferior ante-apical teeth. Inferior appendages half as long. 



9 . — Appendages longer than the last segment. Dorsal apical half of 

 9 bright yellow. 



Described from one $ ' one 9 from Kingston, Jamaica, May, 

 1890, by Mr. E. M. Aaron, to whose kindness I am indebted for 

 them; one % , Kingston, by Mr. Wm. J. Fox, (Amer. Ent. Soc. 

 coll.); one 9, Jamaica, Mr. Charles W. Johnson (Wagn. Ins. 

 coll.). 



This interesting form belongs to the Legion Lestes Selys. A 

 detailed description will appear later. 



