28 BULLETIN 143, UNITED STATES NATIONAL MUSEUM 



"'^ylander from Finland. This specimen was a lateral gynandro- 

 morph with the left half male and the right half female. Wheeler 

 (1910) gives an account of a lateral gynandromorph of Pseudo- 

 tnetlwca canadensis (Blake). In this case the left half was female 

 and the right half male. A third instance is mentioned by Mann 

 (1915) regarding a gynandromorph of Dasymutilla fvZvohii'ta 

 (Cresson), He described this one as follows: "This specimen is 

 incompletely differentiated and is a crossed or decussated gynan- 

 dromorph. The male side lacks wings, and all of the legs are typi- 

 cally male. The head is male to the right and female to the left, 

 while the thorax and abdomen are male to the left and female to 

 the right." 



The fourth case is a specimen of Dasyrrmtilla liora^ new species 

 (described hereafter) collected by Dr. J. C. Bradley at Spring Creek, 

 Georgia, May 18-21, 1916. In this specimen the gynandromorphism 

 is confined to the first four abdominal segments, and is not a perfect 

 lateral gynandromorph as in the cases described by Maeklin and 

 Wheeler. The head and thorax are entirely male in character, the 

 antennae, wings, and legs exhibiting normal male characters on both 

 the right and left sides. The first four segments of the abdomen 

 are predominantly female although the first and fourth segments 

 are modified by the male influence. The first segment is asym- 

 metrical, with the left side ferruginous, clothed with sparse, erect 

 pale hairs, glabrous and impunctate, and the right side of a dark 

 mahogany red, clothed with sparse, erect black hairs and punctate; 

 the apical fringe of the left side is pale and of the right side black. 

 The second segment is asymmetrical basally where it joins the first 

 ' segment but the appearance of the entire segment is very similar 

 to that of the female ajfrh (Blake). The second tergite possesses 

 four pale ferruginous spots and the apex of the segment is fringed 

 with silvery pubescence interrupted medially by a spot of black 

 pubescence. The third tergite is fringed with silvery pubescence 

 slightly interrupted medially with black. The second, third, and 

 fourth sternites are typically female, with thin apical fringes of 

 silvery pubescence. The fourth tergite is both male and female; 

 laterally both sides are male in that the pubescence is erect, long, 

 dense and black; an area of similar pubescence is present adjoining 

 and immediately to the right of the median line; the remainder 

 of the tergite; that is, areas between this median spot and each lateral 

 spot of erect, shaggy pubescence, is typically female with sparse, 

 appressed, silvery pubescence. The remaining abdominal segments 

 present male characteristics entirely. The genitalia upon dissec- 

 tion proved to be normal and like those of normal individuals of 

 this species. 



