Jan., '07] ENTOMOLOGICAL NEWS. 5 



1905, he wrote, "The variety of B. vinosa you mention is not 

 uncommon at Ohio Pyle. I have succeeded in taking three 

 specimens, though I saw a number of others. Their difference 

 from typical vinosa is apparent at a glance, even while they are 

 on the wing, their pale blue markings in marked contrast to 

 the almost uniform brown appearance of typical vinosa. In 

 manner of flight I could detect no difference in the two varie- 

 ties. They both prefer the ripples along the river where there 

 are many stones, and their flight is usually just along the 

 water's edge and but a few inches above the rocks. I observed 

 females of typical vinosa ovipositing while at rest on rocks in 

 the damp algae just above the water." In Canada I was able 

 to distinguish the two species readily on the wing by the color 

 of the apical abdominal segments. 



As above indicated, I am indebted to Professor Needham 

 for three specimens studied. In his laboratory we examined 

 together some of my material, and he regards grafiana as dis- 

 tinct from z'inosa. Dr. Calvert has sent me notes on venational 

 characters of specimens of the genus in Philadelphia. And 

 on October n, 1905, Professor Hine wrote me, "There is in 

 the collection here (O. S. U., Columbus, Ohio,) one specimen 

 taken at Orwell, Ashtabula County, Ohio, September, 1894, 

 by E. E. Bogue, and labelled vinosa, by Dr. Kellicott. This 

 dragonfly has the character^ you mention of the new species." 



Somatochlora charadraea n. sp. (charadrczusGr., from a mountain torrent). 



Abdomen, o* 35; hind wing 35 mm. (S. lincaris, abdomen 45, hind 

 wing 43). 



Labium pale yellow; lahrum dark yellow, edged with brown; clypeiis 

 brown; frons dark yellow, for nearly its entire width above and for a 

 short distance in front, metallic blue; vertex black, the apex yellow; 

 occiput dull yellow; rear of eyes black. 



Thorax brown, metallic reflections most evident below on tin mese- 

 pimeron and metepimeron, each of which has a bright yellow stripe, 

 on the first of nearly uniform width and nearly the length of the 

 scleritc, on the second widened and shortened to form an inferior 

 rounded spot; middorsal carina and intcralar sclerites yellow. Costa 

 pale yellow to its termination, and antenodals and nodus largely of the 

 same color; stigma black; all four triangles once crossed;* seven 



*.\cc(lhani. Aquatic Insects in the Adirondack's, N. Y. State Museum. 

 Bulletin 47, 1001, p. 484, in the Key to N. A. genera of Cordnlhi.e 

 (s. str. ) erroneously places Sonidtochlora under his section "cc Tri- 

 angle of hind wing without cross vein, open." Normally Somatochlora 

 has this triangle once crossed. Of 40 hind wings of \<>iatoclilom 

 elongata which I studied, the triangle in two left wings was not 

 crossed. 



