38 ENTOMOLOGICAL NEWS. [Feb., '03 



mmn'' in de Selys' handwriting;* these two males are from 

 the Museum of Comparative Zoology ; both have lost abdomi- 

 nal segments 7-10. De Selys describes this species as having 

 * ' Onglets obscurs a dent inferieure beaucoup plus courte que 

 la superieure ;" I find the tooth of the tarsal claws represented 

 only by a minute rudiment in these two males (see PI. Ill, 

 fig. 6). 



In favor of the relationship of daeckii to Telagrion are the 

 following agreements in structure (compare figs, i and 2, Plate 

 III) : (<2) l^he shape of the pterostigma and the number of 

 cells surmounted by it; (^) the shape of the quadrilateral; 

 {c) the origin of the inferior sector of the triangle at the sub- 

 median cross- vein ( ' * nervule basale post-costale" of de Selys, 

 1876), as well as (^) its termination proximal to the level of 

 origin of the nodal sector ; (<?) the termination of the superior 

 sector of the triangle between the levels of origin of the nodal 

 and ultra-nodal sectors ; (/*) the number of postcubitals ; (^) 

 the presence of pale postocular spots ; (/z) the small number of 

 spines on the outer side of the third tibiae ; (/) the great pro- 

 portionate length of the abdomen and (Jz) the simple character 

 of its tenth segment. 



It is true that there are some disagreements with Telagrion^ 

 such as the differently shaped superior appendages of the male 

 and the point of origin of the nodal sector (compare figs, i and 

 2, Plate III ; de Selys gives no data on this last feature). I 

 think, however, that these are not as great as the differences 

 between daeckii and any other known genus which might be 

 suggested, and I do not consider the erection of a new genus 

 for daeckii justifiable on our present knowledge. Of the 

 genera at present known from North America, one would 

 probably think of Ejiallagma as furnishing the nearest rela- 

 tionship for daeckii, but the characters above marked c, d, i, 

 are opposed thereto. 



It may be well to repeat here de Selys' remark (/. c, 1876, 

 p. 967): '* II est possible qu'il faille encore subdiviser ce sous- 

 genre \Telagrio7i\, car les especes du i er groupe {Julvellum, 



* Longissimum was a name employed by Hagen in his List of Neurop- 

 tera of South America (Syn. Neur. N. Am., p. 310. 1861), but without 

 description. It is cited by de Selys (/. c,y 1876, pp. 970, 972) but abandoned 

 for longum. 



