May, 1908.] Descriptions of New Mallophaga. HI. 355 



to do. Thus the theory seems to explain and incorporate every 

 observed fact and not to be out of harmony with the general 

 conditions of the vicinity. 



Since drift of Wisconsin age Hes in the smaller valleys and 

 since the observed stream erosion, accompHshed subsequent 

 to the diversions, is so great, it is beheved that the original 

 diversion must have occurred in connection with some pre- 

 Wisconsin ice invasion probably the earliest to come to this 

 region. , 



DESCRIPTIONS OF NEW MALLOPHAGA. III. 



E. P. DURRANT. 



6. Menopon colaptis, nov. sp. Fig. 1, H. 



Description of female. Body, length 1.82 mm., width .74 

 mm. ; of pale golden-brown color, with darker and narrow trans- 

 verse abdominal bands, many of the specimens, however, show- 

 ing a reddish tinge. 



Head, length .27 mm., width .58 mm.; forehead broadly 

 rounded with temples projecting; on front of head near lateral 

 margins, arising from a clear space, two small, and one large 

 hair; palps projecting a little more than terminal segment; a 

 distinct ocular fringe; back of eye two small hairs, and on temple 

 two long ones ; occipital border concave with eight long hairs and 

 with narrow brown marginal band ; head of rather uniform color- 

 ing, inner border of antennal pit dark ; ventral surface with a pair 

 of three-jointed backward-extending processes one-third the 

 length of the head. 



Prothorax large, with thin smoky lateral extensions reaching 

 as far as first long hair on occipital border ; two long pustulated 

 hairs on each lateral margin and eight on the posterior, the one 

 at the anterior angle with a small spine on each side of it. Meta- 

 thorax a little broader than the prothorax, with the posterior 

 border slightly curved backward and with a number of hairs; 

 legs of the general body color. 



Abdomen somewhat elongate, angles projecting shghtly and 

 bearing one long and two shorter hairs also one or tW'O small 

 spines ; a row of hairs extending across near posterior margin of 

 each segment; posterior border of last segment flattened and 

 with a row of small hairs, a close fringe of fine hairs on ventral 

 margin. 



Male. Body, length 1.54 mm., width .78 mm.; head, length 

 .27 mm., width .59 mm. Except in size much the same general 

 appearance as the female. 



