James A. G. Rehn: On some African Mantideie and Phasmidae etc. 107 



slightly larger size and in having six pairs of gibbosities along 

 the median line instead of five as in indica. The distribution of 

 the genus Humbertiella is now seen to be very similar to that of 

 the closely allied Theopompa. 



Size medium; form robust. Head broad, the greatest width 

 about equal to the pronotal length; occipital line subtruncate 

 with lose rounded juxta-ocular nodes separated from the median 

 portion of the occiput by distinct sulci; front subinflated, with 

 four subparallel sulci; ocelli small, placed in a broad low triangle; 

 facial shield strongly transverse, dorsal margin subarcuate, very 

 slightly arcuate ventrad; antennae (incomplete in type) longer 

 than head and pronotum together; eyes prominent, inflated, 

 subglobose, directed somewhat cephalad. Pronotum with the 

 greatest width contained one and one-third times in the length, 

 in form similar to that of the some sex of other speeies of the genus, 

 cephalic margin moderately arcuate, caudal margin arcuate 

 laterad, emarginato-truncate mesad, lateral margins straight, sub- 

 parallel cephalad of coxal Insertion, arcuate convergent caudad, 

 latero-cephalic angles decided but obtuse; greatest caudal width 

 contained twice in the length; dorsum with a more (cephalad) 

 or less (caudad) distinct medio-longitudinal sulcus, gibbosities 

 arranged in six pairs of which the cephalic is the most extensive, 

 the next pair chiefly laterad of the general series, the following 

 three pairs subequal in size and the caudal the smallest but most 

 decidedly conical of the series, supra-coxal region bearing a lateral 

 pair of tubercles in addition to the median series. Tegmina coria- 

 ceous, about twice as long as the head and pronotum together, 

 moderately broad; costal field rather narrow subequal in the 

 proximal three-f if ths ; apex rotundate oblique sub-truncate ; 

 Stigma narrow, linear. Wings not extending beyond tegmina. 

 Apex of abdomen surpassing tegmina and wings; supra-anal plate 

 transverse, margin arcuate, a median carina present, the surface 

 of the plate undulate and mesad elevated in a A. Cephahc coxae 

 but little shorter than the pronotal length, robust, cephalic margin 

 with extremely low serrulations ; cephalic femora nearly half 

 again as long as the coxae, robust, inflated transversely, dorsal 

 line nearly straight, distal extremity comparatively small, dis- 

 coidal spines four in number, proximal in position, external margin 

 with five spines of which the distal is small and genicular in 

 Position, internal margin with sixteen spines which reading from 

 the distal end of series give the following formulae i I iiiIII 

 IIIIIIII, the distal spine being genicular and the first three 

 separated from one another by considerable interspaces, accessory 

 row of prediscoidal tubercles on ventral face decided, external 

 face decidedly sunben within its margins, a medio-longitudinal 

 row of tubercles present, cephalic tibiae (exclusive of apical claw) 

 twothirds the length of femora, armed on the external margin 

 with nine spines, internal with ten; cephalic metatarsi equal to 



6. Heft 



