X, V. 3 Baker: Philippine Jassoidea, III 191 



or less strongly projecting and usually carinate ledge. In all, the 

 pronotum is more or less strongly rounded between the eyes, and 

 with strong and usually complete lateral carinae. The pronotum 

 is either normal in form or strongly extended posteriorly and 

 largely covering the scutellum. The venation of the tegmina 

 varies from very simple to most complex. The arm.ature of the 

 hind tibiae varies from the numerous spines and teeth of Pytha- 

 mus to the few teeth and weak hairs of Megophthalmus. In a few 

 of the forms the hind tibiae are longitudinally sulcate. Among 

 the true Ledridse, however, can be found as wide variation in 

 tibial armature as in this group. None of these forms possesses 

 the remarkable structure of face common to the true Ledridse. 

 Much wider variation in structure of head and thorax and in 

 venation of tegmina is to be found in the family Tettigoniellidas. 

 From all of the evidence available it seems that this group is 

 a natural one, as worthy of distinction in the Jassoidea as are 

 Ledridse and Tettigoniellidse, the whole group to be included in 

 one family, the Stenocotidse.' It is true that Megophthalmus is 

 only Palsearctic, while the Stenocotinse are Australasian, but Kir- 

 kaldy * has described a genus, Kahavalu, from Australia, which is 

 very closely related to Megophthalmus, if not congeneric with it. 

 Rearrangement of these groups along more natural lines, and 

 based upon more detailed knowledge, has been delayed, because 

 the older species, often the types of the groups, have remained 

 but little known as to their structural details. The older figures, 

 and some of the later ones, are extremely misleading, and the 

 older descriptions are usually inadequate- For instance, speci- 

 mens of Megophthalmus scanicus Fall, of Sahlberg's collecting, 

 received from Doctor Reuter, cannot be placed in any position 

 under the microscope that will cause the face to appear in the 

 least like the cut in Fieber's "Les Cicadines d'Europe." Sketches 

 from these specimens made with camera lucida are presented 

 herewith (fig. 1). No previously published detail drawings of 

 Signoretia are known to me. In fact, even the exact determi- 

 nation of Signoretia malaya Stal, the type of the genus, is open 



' An instance of very unnatural association is Oshanin's reference of 

 the Persian genus Adelungia to the family Koebeliidse, described by me in 

 Psyche (1907), 8, 76. Koehelia has a ledroid habitus with thin horizontally 

 laminate vertex, but the ocelli are on the face. A.delungia has a strikingly 

 bythoscopoid habitus, but the head is provided with a porrect laterally com- 

 pressed process. The two genera have not the remotest relationship. Ade- 

 lungia pertains to the Bythoscopidse and should there form a new subfamily, 

 the Adelungiinae. 



' B>ilL Rep. E.vp. Sta. Hawaiian Sug. PL Assoc. (1906), 1, pt. 9, 371. 



