The Grasjyedosomatidae of North America. 49 



Genitalia of male (figs. 165, 166) with the anterior arms oblique, deeply 

 bifid at apex, the lobes subequal, bnt of different shape; the inner somewhat 

 resembling in outline the head of a bird; the outer more or less truncate and 

 fimbriate along the inner edge distad. Posterior arms clavate, somewhat 

 acuminate at apex and with a notch on the median face. Below, attached to 

 the anterior arm, and somewhat embracing the posterior is on each side a thin 

 lamina. 



Ninth legs of male (figs. 167, 168) with the basal joint broad below and 

 deeply emarginate above. From the posterior face projects mesad a triangular 

 plate dentate on the iKOximal edge, partly covering the emargination, and 

 giving the appearance of a deep, notch when the leg is viewed from the pos- 

 terior side. Second joint more slender than in the other species, more than 

 three times as long as broad 7: 2. Proximal joints with scattering hairs, the 

 distal increasingly hirsute. Claw rather small. 



Tenth legs of male (fig. 170) with margins of coxal apertures produced, 

 and the inner edge of the coxa somewhat emarginate. 



Eleventh legs of male (fig. 171) with the conic process rather shoi't and 

 blunt. 



Color of alcoholic specimens, probably faded, horn brown, darker above, 

 gradually changing to dirty white below. The spots described for the pre- 

 ceding species are present, but are less distinct, so that the animal appears 

 nearly concolorous unless more closely examined. 



Length of male 15.5 mm. ; width "2 mm. 



Habitat: Locality unknown, probably Indiana, U. S. Nat. 

 Museum, No. 427, a male and two female specimens. In the 

 form of the genitalia and ninth legs this species seems very 

 distinct. 



Cleidogona forceps sp. n. 



Plate IX, figures 159-163. 



Male genitalia with anterior arms broad below, graduallj^ narrowed, then 

 dilated and again narrowed, deeply bilobed at apex, not decurved; superior 

 lobe broadly notched at apex, one of the divaricate divisions serrate; inferior 

 lobe longer, the apex slightly notched, twisted. 



Posterior arm attached at about one-third the height of the anterior, slender, 

 deeply divided, forcipate. 



Ninth legs of male with basal joint moderately emarginate below on the 

 ventral face, slightly so above on the dorsal face. Second joint scarcely twice 

 as long as wide, at about the middle on the ventral side swollen into a large 

 rounded prominence; above is a broad sinus into Avhich the distal joints are 

 folded. 



The specimen on which this species was founded was taken 

 from the same bottle (U. S. Nat. Museum No. 16, no locality), 

 with those represented by figures 144-148, and not apparently 



Annals N. Y. Acad. Sci., IX, Oct., 1895.— 4 



