143 



of claw which is covered by the other process forming a flap, quite 

 hairy on its upper margin. The ninth sternite is described very well 

 by Eothschild (8) as "boomerang" shaped. The eighth tergite has 

 a small manubrium. 



Description of Plate VI. 



[P Finger. 



Pig. 1. Clasping organs of male | M Manubrium. 



[iX St Ninth Sternite. 



Fig. 2. Head of male. 



Fig. 3. Terminal abdominal segments, female. . f '^ Eighth Tergite. 



^ ' ■ "18 St Eighth Sternite. 



Fig. 4. Hind coxa and femur, inner surface. 



CTENOCEPHALUS CANIS Curtis. 

 [Plate VI.] 



Head. — Strongly and evenly rounded in both sexes. Eye large. 

 Maxilla triangular. Maxillary palpi about as long as labial palpi. 

 Labial palpi reach to two-thirds of anterior coxae, 4-jointed. Seven 

 spines along the lower margin of the gena. The posterior angle of 

 the gena ends in a small tooth. Occasionally this may be absent. 

 Antennal groove in the female reaches to within one-third of the top 

 of head and is prolonged upwards by a chitinous thickening and in 

 the male reaches almost to top of head. Two bristles on the gena, 

 one placed well toward the anterior lower angle and the other in front 

 of the eye. Usual number of bristles on posterior m.argin of the head, 

 with 2 large ones back of the antennal groove. About 8 hairs on 

 the second joint of the antenna nearly as long as the third joint. 



Thorax. — A row of about 10 bristles on the pronotum, with a 

 ctenidium of about 14 to 16 spines. Two rows of bristles on the 

 mesonotum, a posterior of about 12, another of more numerous 

 smaller bristles placed well anteriorly. The metanotum contains a 

 single row of about 10 or 12 bristles. The episternum of the meta- 

 thorax has 3 or 4 stout bristles, while the epimerum contains an an- 

 terior row of about 10 bristles and a posterior row of about 9. 



Abdomen. — The first abdominal tergite contains 2 rows of about 

 4 bristles each, while the other tergites to the seventh contain a 

 single row of from 12 to 16 bristles. The stigmata are large. There 

 is a single antipygidial bristle on each side. The sternites from third 

 to seventh have a single row of 4 bristles each. 



Legs. — The hind coxa has on its inner side a patch of from 6 to 12 

 spines, while the hind femur has a row of 10 or 12 bristles on its inner 

 surface. The spines on the posterior border of the hind tibia, with 

 the exception of the apical, are in pairs, while in the apical group are 

 about 3 stout bristles. The apical spine of the second joint of the 

 hind leg reaches to nearly the middle of the fifth joint. On the fifth 



