424 



PSYCHE. 



to the Atlantic coast from Maryland to 

 Georgia. The interior basin between 

 the great continental ranges, the Gulf 

 States, and the region between the Alle- 

 ghanies and the Mississippi, as well as 

 the North Atlantic district are, so far 

 as we yet know, uninhabited by Myr- 

 mecophila. Saussure draws attention 

 to tiie fact that while the common 

 European species is found throughout 

 the south of Europe and also in Ger- 

 many, and especially in Saxony, it is 

 unknown in intervening districts, such 

 as Switzerland, where certainly the 

 examination of ants' nests has been cai'- 

 ried on extensively. 



It is not a little curious that so little 

 is known of the male of Myrmecophila. 

 Although two species of tiie genus are 

 known in Europe and one of tiiem is 

 not uncommon, Brunner von Wat- 

 ten wyl saj'S the male is unknown to 

 him, Saussure has but once seen one, 

 and this was destroyed before he could 

 describe the genitalia, and Fischer of 

 Freiburg has seen the male of one 

 species only, and in liis classical work 

 refers to it only by the words: "lam. 

 supraanalis mihi non rite visa." It is, 

 however, figured in Cuvier's R6gne 

 anim.. Disc, ed., pi. 82, fig. 2. Yet in 

 the forty specimens from the United 

 States I have had before me at this time 



for study, sixteen of them are males, 

 and represent all Init one of the five 

 species. 



So far as I have been able to observe 

 — the stout hind femora generally 

 interfere with a lateral view — the 

 species do not difler greatly from each 

 other either in the male or the female 

 abdominal organs. The tips of the 

 ovipositor often appear very different in 

 different individuals of the same species, 

 but this is due to desiccation. As to 

 the male organs, little can be seen 

 except a somewhat protuberant and 

 apically rountled haustrate plate, as 

 deep or ahnost as deep as broad, 

 apically cleft — the subgenital plate; 

 this partially or wholly conceals within 

 its upper margins a pair of not very 

 slender, lilunt, cylindrical, incun'ed 

 cerci, whicii do not reacii the tip of the 

 plate and ai'e overshadowed by a mi- 

 nute triangular or rounded quadrate 

 supraanal plate. 



I have given under each species all 

 that I can learn about_ the special asso- 

 ciation of these smallest of Orthoptera, 

 and I am glad to acknowledge my 

 indebtedness to Messrs. Pergande and 

 Ashmead through Dr. Howard for de- 

 termining some of the ants in whose 

 nests they were found. Mr. Pergande's 

 further aid is clear from the text. 



Tabic of the North American species of Myrmecophila. 



«' Body relatively large or of medium size, broad oval, depressed; hind femora 



pyriforin, distinctly more arcuate below than above. 



b '. Body nearly twice as long as broad ; front l)order of pronotum narrowly 

 margined with luteous ........ pcrgandei. 



