( &34 ) 



taining (on the two sides together) on the anterior segments ten to twelve and on 

 the posterior ones eight to ten bristles, the first tergite, however, liaving two rows 

 of four bristles. The antein-gidial bristle is a very little shorter than the second 

 bindtarsal segment. The steruites have few bristles in both se.\-es, the numbers 

 being two to four in the c? and three or four (rarely tive) in the ? , segment VII. of 

 the ? usually having one or two more bristles than the preceding segments. 



Legs. — The coxae are similar in shape to those of Ct. felis and canis. The 

 hindco.\a bears eleveu to fifteen stout short spiniform bristles on the inner surface 

 and three bristles on the posterior apical lobe. The hindfemnr has two subapical 

 ventral bristles on the outside and a row of three to five on the inner surface. The 

 hindtibia has five dorsal notches, exclusive of the apical one, and on the outer 

 surface a row of eight to ten bristles, besides six to eight placed along the anterior 

 edge. The longest apical bristle of the first hiudtarsal segment oiten reaches to 

 the apex of the second segment, and the corresponding bristle of the second segment 



KiG. 7. — Ctetlocephainit eraterns. 



frequently extends to the apex of the fourth. The measurements of the mid- and 

 hindtarsi are as follows : 



Midtarsns : S 21, 28, 18, II, 31 ; ? 27, 34, 20, 13, 35. 



Hindtarsns : S 59, 33, 21, 14, 33 ; ? 67, 39, 23, 10, 38. 

 The proportions vary a good deal in the specimens of different size. 



Modified Segments. — cJ. The eighth sternite (text-fig. 7) has an oblique sub- 

 apical row of three or four bristles and one ventral bristle, besides some minute 

 hairs. The internal jwrtion of the ninth tergite is broader than long, being truncate, 

 with the upper angle about 90° and the lower angle very strongly rounded (IX. t.). 

 The manubrium (M) and the two flaps of the clasper bear a remarkably close 

 resemblance to these organs of Ct. canis. The bristles on the outer surface of the 

 large flap F' are more numerous and the small flap F" is narrower thau in canis. 

 The outline of the distal portion of the ninth sternite is so much obscured in the 



specimen from which the figure is taken that we cannot make it out clearly. 



?. The eighth tergite, which has no bristles above the stigma, bears from eight 



