ON A SECOND COLLECTION OF MALLOPHAGA ETC. 



647 



to the posterior, weakly convex margin of the second segment ; posterior 

 margin of all following segments nearly straight. Dorsal surface of 

 the first segment with four hairs on each side of the posterior margin 

 and with four more hairs on the margin of the produced median parts; 

 dorsal surface of segments II — VI with four to six weak hairs on each 

 side of posterior margin, and that of segments VII and VIII with two 

 or three hairs. A group of four strong spines on each side of the 

 posterior margin of the second abdominal sterilite. 



Ground colour of abdomen buffy whitish ; transverse band of the 

 first segment broad, brownish ; that of the second segment dark brown 

 and interrupted by the triangular projection of the preceding .segment ; 

 segments III — VIII with a continuous, dark brown transverse band ; 

 sutures broad, buffy-whitish ; the last segment uniformly coloured. 



Description of tlie male : — Much resembles the female. Body 

 smaller, metathorax slightly narrower than in the female ; abdomen 

 distinctly smaller and narrower ; posterior margin of all abdominal 

 segments nearly straight and bearing a row of twelve to sixteen hairs 

 on segments I — VII and four hairs on segment VIII ; the last segment 

 narrower than in the female, with a few fine hairs instead of a con- 

 tinuous fringe of same. Genitalia long, distinct, well chitinized, reaching 

 from posterior margin of the third segment to the posterior end of 

 abdomen. 



Measurements : 



























mm. 



mm- 



mm. 



mm. 



mm. 



mm. 



mm. 



mm- 



mm. 



mm- 



Length of body 



2.16 



I.90 



I.92 



1-93 



1-93 



1-53 



I.70 



1.68 



I.72 



I.72 



Width of body 





O.70 



O.72 



0.72 



0.31 



0.57 



O.56 



0-S9 



0.56 



O.57 



Length of head 



O.37 



O.36 



O.37 



0.37 



0.36 



0.33 



0-34 



0.34 



O.34 



o-35 



Width of head 



O.67 



O.70 



O.69 



0.69 



0.69 



0.60 



0.61 



0.62 



O.62 



O.62 



Length of prothorax 



O.23 



O.23 



O.23 



0.22 



0.23 



0.20 



0.21 



0.21 



0.22 



O.23 



Width of prothorax 



O.43 



C-43 



O.43 



0.43 



0.41 



0.37 



0.36 



0.37 



O.36 



O.38 



Length of metathorax 



032 



O.30 



O.31 



0.32 



0.31 



0.29 



0.30 



0.29 



O.30 



O.29 



Width of metathorax 



O.65 



O.63 



O.65 



0.67 



0.63 



0.49 



0.50 



0.50 



O.49 



O.50 



