354 BLATTIDiE PRESERVED IN AMBER, FROM PRUSSIA. 



o-enital lamina is furnished with minute styles ; the genicular spines are long, 

 and arolia are present between the tarsal claws. 



No. 6735 (PI. 48. fig. 23) is another very young larva which probably 

 should be referred to the subfamily Perisphseriinse. Since the species is 

 more distinctive than any of the others enumerated above, it should be 

 recognisable from the following description and figure, and eventually it may 

 be possible to assign it to some adult form as yet undiscovered. 



(J . Depressed, ovate, rufo-testaceous, without pubescence. Head com- 

 pletely concealed beneath the pronotum ; eyes moderate, (?) approximated 

 on vertex of head * ; antennse short, with 18 joints. Pronotum sub-cucullate, 

 anteriorly parabolic, posteriorly truncate, a faint median sulcus extending on 

 to the mesonotum. Posterior angles of the meso- and metanotum slightly 

 produced backwards, those of the abdominal tergites more strongly produced. 

 Supra-anal lamina subquadrate, posteriorly slightly eniarginate, barely ex- 

 ceeding the sub-genital lamina, which is trapezoidal and furnished with two 

 minute styles. Lateral margins of abdominal sternites overlapped by the 

 tergites. Cerci very small, nn jointed, and pointed. Legs short ; femora 

 unarmed beneath, their genicular spines minute ; posterior tibise with the 

 spines on the outer aspect triseriately arranged, with an interior calcar almost 

 equalling in length the metatarsus. All the metatarsi much shorter than the 

 succeeding joints, their pulvilli and arolia large. 



Total length 5'5 mm. ; greatest breadth 3"5 mm. 



EXPLANATION OF THE PLATES. 



Plate 47. 



Fio-. 1. Ectobius halticus, Germ. & Ber. a, apex of abdomen of male from beueatli ; 

 h, titillator penis ; c, pronotal pattern of specimen No. 5428. 



2. Ectobius inclusus, sp. n., apex of abdomen of male from the side. 



3. Ischnojitera (fedanensis, Germ. & Ber., apex of abdomen of male from beneath. 



4. IscJmoptera Idebsi, sp. n., apex of abdomen of male from beneath, a, genital 



style. 



5. Left genital style of Ischnoptera perplexa, sp. n. 



6. Phyllodromia lorenz-meyeri, sp. n., apex of abdomen of male from beneath. 



«, titillator penis. 



7. Phyllodromia germari, sp. n., apex of abdomen of male from beneath. 



8. „ „ „ „ female from beneath. 



9. Phyllodromia yolanda, sp. n., apex of abdomen of male from beneath. 

 .10. Phyllodromia antiqua, sp. n., „ ,, „ ,, 



11. Phyllodromia latissima, sp. n., ,, „ „ ,, 



12. Phyllodromia tenaciUa, sp. n., „ ,, ,, ■ „ 



* This detail cannot be made out very clearly, 



