588 FAMILY VII. TETTIGONIIM3. THE KATYDIDS. 



at or behind the middle with a single tooth; subgenital plate of 

 male either notched or subtruncate, its styles variable in length 

 and thickness; of female always notched, usually deeply so. Ovi- 

 positor variable in length, usually straight, sometimes feebly 

 curved downward, its tip acute. 



The synonymy of the species of the genus Atlanticus is very 

 much confused. Until 1894 only three species, now included un- 

 der that name, were known from the United States, two described 

 from South Carolina by Burmeister (1838) under the names 

 Decticus jKH-Jii/iiimis and dorsalis, and one from Tennessee by 

 Saussure (1859) as Orchestic us <nu<'ri<-<nius. Burmeister's names 

 were placed by Scudder (1862) under the Old World genus Tliyre- 

 onotus (Serv.) and by him applied to two well known northern 

 forms (one of them the americanus of Saussure) which R. & H. 

 (191Ga) aver are not the same as those described by Burmeister, 

 though they have not seen the latter's types and base their con- 

 clusions mainly on the fact that the species to which Scudder 

 applied the names do not, as far as known, occur in South Caro- 

 lina. Scudder (1894a) founded Atlanticus and referred to it the 

 northern forms which he had previously placed under Tlii/rcouo- 

 tus, and a third species, gibbosus, from Florida. Later (1900) he 

 described a fourth species, testaceus, from Missouri?, R. & H. 

 (1912) described A. glaber from Florida and Davis (1915a) A. 

 tnonticola from North Carolina. Finally R. & H. in their Revi- 

 sion (191f>a) applied Burmeister's names to two southern forms, 

 placed Saussure's americanus (dorsalis of most authors) under 

 Atlanticus, referred the northern form previously known as 

 "pacliymerus Burm." to testaceus Scudd., and described two 

 forms as new, thus recognizing nine species of Atlanticus. all oc- 

 curring east of the Mississippi, and all but two confined to that 

 area. 72 Since no one knows, or probably ever will know, to what 

 forms Burmeister's names should in reality be rightfully applied, 

 I judge that the conclusions of R. & H. are as good as any that 

 can be made, and to avoid stirring the hodge-podge still farther T 

 have, in the main, adopted them. 



But two species of Atlanticus occur in Indiana and in their 

 various stages are quite frequent from April 1st to September l.~>th 

 in dry upland woods and on sloping hillsides with a southern ex- 

 posure, but are seldom, if ever, found in damp localities. On the 

 first warm days of early spring the young begin to emerge and in 

 suitable places for a mouth or more are among the most common 



"Scudder (18943) and R. & H. (19163) stated that Atlanticus was confined to the 

 Atlantic slope of North America, but Rehn has recently described a species from China. 



