Feb., '02] 



ENTOMOLOGICAL NEWS. 



47 



Strecker, Herman. 

 Stromberg, C. W. 

 Sumichrast, F. 

 Tourney, J. W. 

 Townsend, C. H. 

 Twogood, F. D. 

 Ulke, Henry. 

 Van Duzee, E. P. 

 Wadsworth, Miss M. 

 Walker, Francis. 

 Walsh, B. D. 



Walsingham, Lord. 

 Walton, L. B. 

 Watson, John, 

 Webster, F. M. 

 Weed, C. M. 

 Weed, H. E. 

 Weidmeyer, J. W. 

 Welles, C. S. 

 Wenzel, H. W. 

 Wenzel, W. F. 

 Westcott, O. S. 



West wood, J. O. 

 Wickham, H. F. 

 Wilson, T. B. 

 Williston, S. W. 

 Wilt, Charles. 

 Wingate, J. D. 



Wolloston, 



Wood, W. C. 

 Wood, W, H. 

 Young, D. B. 



A New Species of Gomphus (Odonata) related to 



G, fraternus. 



By E. B. Williamson. 



In eastern North America the hitherto recognized species — 

 externus, fratcrmis, crassus, dilatatus and vastus^- — constitute 

 a group of the genus Gomphus characterized by the form of 

 the postanal cells, the color pattern of the thorax, and especi- 

 ally by the abdominal appendages of the males. Dilatatus and 

 vastjis have the fronto-nasal sature black, and the eighth ab- 

 dominal segment immaculate above, the face being unmarked 

 and segment eight having a basal yellow or yellowish spot in 

 externus , fraternus 2lvA crassus. The following species which 

 appears new finds its nearest ally in fraternus. Dr. Calvert's 

 recent critical study of fraternus, externus and crassus (Ent. 

 News, March, 1901, pp. 65-73, pi. iii, 18 figures) makes it 

 possible to describe this species without indicating at length 

 points of difference and similarity. What is here said con- 

 stitutes a fourth vertical column as an addition to the three 

 vertical columns of descriptive matter in Dr. Calvert's paper. 



Gomphns hybridus n. sp. 



Abd. cJ^, 35-37 ; 9, 35-36. H. w. J*, 27-8 ; $ . 29. 



(i). Superior abdominal appendages viewed from above not as robust 

 as fratertms and crassus, with the apices slenderer, separated by a dis- 

 tance greater than the length of one appendage ; 



(2). inner edge of each appendage concave in general direction, straight 



*I know ventricostis and consanguis only from descriptions. They 

 seem to be most closely related to vastus and dilatatus. 



