264 NOVITATES ZOOLOGICAE XXI. 1914. 



hairs on the fourth, fifth, aiul sixth joiats. The frons is prodaced iuto an obtuse 

 point between the antennae. A single long seta projects laterally from a slight 

 ridge on each side of the median line on the nndersurface of the head. 



Anterior limb (fig. 5) robust but comparative!}' short ; femur very stout ; tibia, 

 tarsus, and claw in one piece, without any trace of division, together shorter than 

 femur, the distal extremity strongly pointed and densely chitinons (see fig. 6), the 

 denser area continued along the outer side to the base of the joint. There are 

 numerous long hairs on the outer side of the coxa and femur and on the inner side 

 of trochanter and tibio-tarsus. 



Mid and hind limbs long and slender ; tibia more than twice as long as tarsus, 

 with a few longish hairs (fig. 7) ; claw simple ; femur with scattered long whip-like 

 hairs ; a tuft of similar hairs on the outer side of the coxa. 



Wings hyaline; ample; costal area denser; distal half of costal margin 

 strongly serrate (fig. 2) ; with two stout nervnres and an intermediate fold ; a 

 pocket-like lobe at base of inner margin (fig. 8) which engages with the terminal 

 process of the haltere. 



Haltere (fig. S) with a narrowed stalk and a broadly expanded outer area set at 

 an angle with the stalk ; distal extremity with a single stout chitinous hooked 

 process. 



Abdomen rather abruptly narrowed near the extremity (fig. 9) ; the penultimate 

 segment exfoliated on the dorsum ; the terminal segment consisting of a conical 

 sheath, divided above, for the protection of the eversile penis. There are two 

 transverse series of from seven to nine cylindrical pits, on the dorsum of the 

 sixth and seventh abdominal segments respectively, which give rise to the brush of 

 long glassy filaments shown at fig. 1. Abdominal spiracles well developed ; more 

 conspicuous on the posterior segments. 



Total length (without appendages), 3 to 4 mm. 



Female and early stages unknown. The fossorial front limbs of the male 

 indicate a subterranean habit in the female. The nymph (as in typical Murgarodes) 

 is probably attached to the roots of plants, and may be enclosed in a nacreous 

 envelope. 



The strongly branched antennae of the male, with the correspondingly increased 

 sensory area, may be a development necessitated by the arid atmosphere of the 

 region in which the insects were captured. 



Taken at light, by Dr. E. J. 0. Hartert : " El-Meksa (South of El-Golea), 

 Alger. Sahara, 2. iv. 1912." 



Explanation of Figures, Plate IX. 



Fig. 1. Adult male, side view, x 13. 

 „ 2. Portion of costal margin of wing, x 65. 



3. Head, dorsal view, x 65. 



4. „ ventral view, x 65. 



5. Anterior limb, x 65. 



6. „ ,, distal extremity of tibio-tarsus, x 280. 



7. Hind limb, x 65. 



8. Haltere and base of wing, x 05. 



9. Extremity of abdomen, dorsal view, x 05. 





