68 



MR. R. SHELFOED : THE BRITISH MUSEUM 



Plegtoptera antiqua, sp. n. (Plate 7. fig. 9.) 



One female, No. 1 13758. 



Rufo-castaneous. Autennse elongate, setaceous, fuscous, with the last four 

 or five joints pale. Pronotum transversely elliptical, anteriorly not covering 

 vertex of head, sides hyaline. Tegmina hyaline ; mediastinal vein giving off 

 some incomplete venules towards the outer margin, radial vein simple ; 1.0-11 

 rather irregular costals, many of these joined by transverse venules, a few 

 venae spurise between some of the costals and between the discoidal sectors. 

 Apical field of the wings visible. Subgenital lamina small, apex only slightly 

 produced, st^des excessively small. Cerci straight, moderate. Legs 

 testaceous ; all the femora entirely unarmed beneath. 



Total length (excluding the unfolded wing-apex) 5 mm. 



By a fortunate accident the apical field of the wing, which in this genus 

 and in Anaplecta is normally doubled over the rest of the wing and hidden 

 under the tegmina, has been unfolded in this specimen and projects far 

 beyond the apex of the tegmina, so that there can be no doubt as to the 

 generic identity of the species. Unfortunately, whoever was responsible for 

 shaping the block of amber in which the insect is embedded, ground one face 

 a fraction too much, with the result that one-third of the dorsal surface of the 

 insect has been destroyed and the complete venation of the tegmina can no 

 longer be observed. This venation is rather singular and the fraction that 

 is visible suffices to discriminate the species from all the modern representatives 

 of the ffenus. 



The following is a list of all the species noted or 

 pages, arranged in their systematic order : — 



described in the preceding 

 Geological 



Sub/am. 





horizon. 



Locality. 



ECTOBIIN^. 



Eetohius balticus, Germ. & Ber. 



Oligocene. 



Samliuid. 





Anaplecta sp. 



p 



xVfrica & E. Africa, 



PHYLLODKOMIINiE. 



Ischnoptcra yedancnsis, Germ. & Ber. 



Oligocene. 



E. Prussia. 





„ sp. 



;> 



Samlaud. 





,, provisioiialis, sp. n. 



•? 



E. Africa. 





Phyllodi'omia ?furcifera, Shelf. 



Ohgoceue. 



E. Prussia. 





„ inclusa, sp. n. 



p 



E. Africa. 



NYCTIBORIN-aE. 



Blattin^. 



PLECTOPTEIlINiE. 

 CORYDIIN.^E. 



„ ^9?-<ECMrsor, sp. n. 



,, tvoochoardif sp. n. 



Pseudophyllodromia succinica, sp. n. 

 Ceratinoptera miocenica, sp. n. 

 Te7nnopteryx klebsi, Shelf. 

 ? NycUhora succinica, Shelf. 



Miocene. Stettin. 



Olio-ocene. Samland. 



Periplaneta sp. 



p 



E. Africa, 



» :! 



Miocene. 



Stettin. 



Plectoptera antiqiM, sp. n. 



p 



E. Africa. 



Euthyrrhapha pacifica, Coq. 



Miocene. 



Stettin. 



? Polyphaga foasilis, Shelf. 



Oligocene. 



Samlaud. 



