NO. 3570 PANDARIDAE — CRESSET 71 



Leg 4: In many genera of both groups this leg in the female is 

 lamelliform {Pandareus, Phyllotherus, Echthrogaleus, and Dinemourd). 

 The females of these genera can be separated from other female mem- 

 bers of the family on this basis alone. In the male the leg is not 

 modified and is of more usual form. 



Leg 5: This leg is reduced in both sexes and is represented by a 

 group of 2-4 setae. This appendage is not useful in separating 

 members of the family. 



Leg 6: This leg is incorporated in the female into the area of 

 spermatophore attachment and is more obvious in group II species 

 (see figs. 209, 284). In the male this leg is represented by 2 setae 

 located near the union of the abdomen and genital segment in all 

 members of the family in which the male is known. 



It should be noted here that certain observations were made 

 regarding the determination of adult males. It was noted (see 

 page 14) that often, in collections, 2 sizes of males showing sperma- 

 tophores were present. A closer examination indicated that the larger 

 was more mature than the smaller (based on relative development of 

 the spermatophores) . It was obvious that in a collection w^here 

 only the smaller ones were present that these might be erroneously 

 considered as matiu-e. I found that in the larger forms the pad of 

 the second antenna was only about one-half the size of the pad of the 

 first antenna. In the smaller forms they are of about equal size. 

 The opinion is therefore presented that this difference may be a method 

 of determining sexual maturity of the male since the spermatophore 

 is seen in earlier stages and is not a dependable criterion. It was 

 observed that in mature males of other species of Pandarus this re- 

 duction of the pad of the second antenna Avas also present (see figs. 

 59, 60). 



