428 ENTOMOLOGICAL NEWS. [Nov., '08 



ocerus pusillus not common in any other locality visited by me 

 was frequently seen, and Haltica rufa was so abundant about 

 the roots -of grass as to be a nuisance. An unknown Acallcs 

 was hailed with delight when the first specimen appeared, but 

 it soon grew rather common and proved to be vcntrosus. 

 Another weevil was abundant, its brassy hue shining in the 

 sun as I stirred it up from the soil, Tyloderma aercum. Two 

 or three species of Tachys, many small Staphylinids and scores 

 of Limnichus nitidulns were taken thus. Several specimens 

 of a carabid new to me with odd deeply pitted elytra proved 

 to be Sclenophorns fossulatus and I took three specimens of 

 Hydrochus rugosus which I had never found before. Some- 

 times a pupa was found in the soil, or the whitish grub of some 

 scarabid beetle. So my search was not a monotonous one 

 but full of interest and excitement and I shall never regret 

 the long hours I spent so near the earth itself in my hunt for 

 Saldoida. 



A new Dragonfly (Odonata) belonging to the Cor- 

 dulinae, and a Revision of the Classifi- 

 cation of the Subfamily. 



BY E. B. WILLIAMSON. 



(Plate XVIII.) 



In the past, two groups of Cordulinae have been recognized 

 and defined by the following characters : crossed or free super- 

 triangles, and united (stalked) or distinct (separate) sectors 

 of the arculus. These groups and the sub-groups are familiar 

 to students of Odonata and need not be discussed here, except 

 to call attention to the fact that the classification resulting 

 from the use of these characters has been an altogether artificial 

 one, resulting in an unnatural assemblage of genera. 



The sub-family Synthemiinae, proposed by Needham and 

 Hart* but not defined, by inference includes the second legion 

 or group defined by de Selys and later authors, but only the 

 Illinois genera of this legion are mentioned. Later Needhamf 



* Bull. 111. St. Lab. Nat. Hist. Vol. VI, Sept., 1901, p. 5- 

 t Aquatic Insects in the Adirondacks, N. Y. St. Mus. Bull. 47, Sept., 

 1901, p. 479. 



