18 



WOOD, 



1. PtLalangium dorsatum Say. 



1 a, female (natural size) ; 1 b, male (nat. size) ; 1 c, penis ; anterior and lateral view. 



P. DORSATTTM Sciij. Journ. Pliila. Acacl. Nat. Sci., 1st se., Vol. 2, p. 66. 



Dorsum minutely granulate ; its general color grayish brown, with 

 often a sort of a golden tint ; anterior to the eye-spot, ornamented 

 with a somewhat v-shaped or irregularly parallelogrammatic black 

 marking on each side. At the eye eminence commences a dark black- 

 ish central marking, which is at first quickly expanded, then very 

 much contracted, and afterwards gradually somewhat expanded, and 

 then similarly again contracted, so as to form a strongly pronounced 

 central vase-shaped marking extending from the eye-spot to the pos- 

 terior extremity ; besides, there ,is on the flanks a more or less dis- 

 tinct blackish band, and the surface of the abdomen is more or less 

 spotted with black. Segmentation of the abdominal scutum well 

 marked. Eye eminence prominent, scarcely at all crenulate. Palpi 

 long, slender, grayish or reddish brown, more or less pubescent in the 

 male with their uuder surface and lateral edges furnished with rows 



