no. 2089. NOTES ON NEOTROPICAL DRAGONFLIES—V/ILLIAMSON. 613 



shown in Doctor Calvert's figure. Viewed in profile the inferior 

 appendage at about its middle on the ventral edge has a distinct 

 prominence; this prominence being opposite the origin of the basal 

 tooth shown on the inner edge of the inferior appendage in Doctor 

 Calvert's figure. In my material this tooth and the area supporting 

 it extending along the inner side of the appendage to its base is pale 

 colored and apparently less chitinized than the remaining basal por- 

 tions of the appendage. The apex of the lower appendage termi- 

 nates in a very narrow, suddenly constricted, flattened, thread-like 

 body, shining and horn like, which resembles a claw or hook on the 

 appendage, curved in directly toward the appendage in a semicircle 

 opposed to the curve of the appendage itself. The tip of this small 

 thread-like body is rounded. Opposed to this curved thread-like end 

 of the appendage and opposite its tip is a minute spine on the append- 

 age. This thread-like body is not discernible on all specimens because 

 of the position of the appendages in drying and because of its small 

 size and optical indistinctness. In life it is probably flexible and, in 

 connection with the spine opposite it, is intimately concerned with 

 the coupling of the sexes. 



In the single male of nathalia the second spine described above on the 

 supero-external edge of the superiors is minute or wanting and the 

 edge is not concave as in paulina. The lower edge of the inferiors, 

 seen in profilers convex at about the middle but has no distinct promi- 

 nence as has paulina. I detect a similar thread-like apical termination 

 as in that species, but the position of the appendages makes it impos- 

 sible to study this carefully, and I can not see any minute opposing 

 spine as described for paulina. 



3. A NEW TELAGRION FROM TRINIDAD, WITH A NOTE ON TELAGRION 

 DAECKII BY PHILIP P. CALVERT. 



The following is a brief description of a new Telagrion collected 

 by Mr. B. J. Rainey in Trinidad. 



TELAGRION RAINEYI, new species. 



Male. — Length of abdomen, 31 mm.; length of hind wing, 17.5. 



Labium pale yellowish, median lobe with a U-shaped cleft for about 

 two-fifths its length. Labrum dark green, very narrowly margined 

 with pale yellow. Clypeus and dorsum of head black, marked as fol- 

 lows : A median yellow spot and on either side a smaller spot between 

 clypeus and frons; occiput, on either side of the occipital ridge behind 

 the ocelli, dull orange, separated from the eyes by a black line; 

 through this orange is a dull black band, about one-third as wide as 

 the orange at the eyes, and extending from the occipital ridge to the 

 eyes, nearly, parallel to the rear of the head; overlying the outer end 

 of this black band and the yellow adjacent to it anteriorly are blue 



