120 James A. G. Rehn: On some African Mantidae and Phasmidae 



Measurements. 



Length of body 46 mm. 



Length of pronotum 18,5 



Greatest width of pronotum 4 



Length of tegmen 34 



Length of cephalic femur 11 



Length of median femur 14 



Length of caudal femur 15 



The type is unique. 



Amphecostephanus* n. gen. 



Apparently a member of the division Pachymantides of the 

 Creobotrinae, but not closely related to any of the previously 

 known genera. The peculiar form of the occiput is quite distinet 

 from that of any other genus of the family. 



Head strongly depressed; occiput elevated into a lamellate 

 subfoliaceous structure, acute-angulate mesad flanked laterad by 

 rectangulate proximal marginal lobes. Pronotum short subsellate, 

 margins ciliate. Tegmina and wings very ample, greatly sur- 

 passing apex of abdomen, margins of tegmina and costal margin 

 of wings ciliate. Cephahc coxae unarmed; cephalic femora com- 

 pressed, subtrigonal, sublamellate dorsad, discoidal spines four. 

 Median Hmbs non-lobate. Cerci hardly surpassing the subgenital 

 plate, monihform, the distal segment broad, depressed, with its 

 distal margin arcuato-emarginate. 



Type. — A. rex n. sp. 



Amphecostephanus rex n. sp. 



Type: ^', Benguella, Angola. (Dr. F. C. Wellman.) [German 



Entom. Museum.] 



Size medium; form moderately elongate. 

 greatest width contained one and one fifth 

 times in the greatest depth; face subdepla- 

 nate; occipital appendage considerably de- 

 planate, sHghtly curved cephalad toward the 

 apex, the height of the appendage dorsad 

 of the dorsal margin of the eyes two- 

 thirds of its proximal width, median section 

 of the appendage reverssed subcordiform, apex 

 acute, proximal lateral Shoulders sinuato- 

 rectangulate, separated from the eyes by Amphecostepht 

 verv small low obtuse lobes, ventral face n- gen. and sp cephaiic 



"^ ■ , ,-1 j- View of head. (x6.) 



of appendage venoso-carinate, the median 

 carina forked; ocelh large, placed in an inverted triangle; facial 

 shield transverse, the greatest depth contained nearly three 

 times in the greatest width, dorsal margin arcuato-elevate mesad, 



Head with the 



lanus rex 



*) ^A(i<prixi double-edged, a tecpavoi crown. 



