Mr. K. Slielford on the Studies of the Blattidae. 649 



Theganopteryx affinis, sp. n. 



$ . Closely allied to T. fantastica, but tegmina with anal field 

 and a stripe on the discoidal field, castaneons ; distance apart of 

 eyes on vertex of head greater than the breadth of the 1st antennal 

 joint; wings faintly suffused with castaneous, ulnar vein bifurcate, 

 the rami joining again at their extremities. Secondary sexual 

 apparatus of ^ as in T.fantastica. Posterior angles of 8th abdominal 

 tergite less produced; supra-anal lamina not sub-bilobate. Sub- 

 genital lamina symmetrical, apex concavely emarginate, two styles. 

 Cerci narrower, situated less close together, their bases not hidden 

 by the supra-anal lamina. 



Total length 10'2 mm. ; length of body 8"1 mm. ; length of 

 tegmina 8 mm. ; pronotum 2-2-5 mm. x 2-5-3 mm. 



Hob. Congo State, W. of Kambove, 3,500-4,500' {S. A. 

 Neave) (British Mus., type). 



Theganopteryx nitida, Borg. (Plate LXXIX, figs. 2, 3.) 



Theganopteryx nitida, Borg. Bih. Svensk. Vet.-Akad., 

 Handl. xxviii, Afd. 4, No. 10, p. 4, pi. 1, fig. 8 (1904). 



^ . Castaneous or rufo-castaneous, unicolorous. Antennae fuscous, 

 not incrassated. Tegmina with 19-21 costals, radial and anterior 

 ulnar veins simple, posterior ulnar 6-ramose. Wings suff'used with 

 castaneous, mediastinal vein 4-ramose, 21 costals, the proximal 16 

 slightly incrassated, medio-discal area in the middle about four times 

 broader than the medio-ulnar area, crossed by 14 transverse venules, 

 ulnar vein bifurcate, flexuose, reaching the outer margin, 1st axillary 

 vein 7-ramose, triangular apical area large, prominent. Posterior 

 margin of penultimate tergite sinuate ; no scent-gland opening 

 visible. Supra-anal lamina very asymmetrical, its posterior angles 

 produced as two incurred hooks, the right overlapping the left. 

 Subgenital lamina surpassing the supra-anal lamina, produced, 

 asymmetrical, irregularly notched on the left side, apex with a blunt 

 style. Cerei moderate, 9-jointed. Legs testaceous. 



Total length ITS mm. ; length of body 9 mm.; length of tegmina 

 9-8 mm.; pronotum 3 nmi. x 3*1 mm. 



Ilab. Kamerun (Sjostedt, Stockholm Mus. type ; Con- 

 radt, coll. Bolivar); Biafra, Cabo S. Juan {Escalera, 

 Madrid Mus.). 



