212 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



near its midpoint. All setae on shield smooth. Anterior pair of 

 sternal pores parallel with anterior margin of shield and at level of 

 anterior pair of usual sternal setae. Genito ventral shield only slightly 

 expanded posteriorly, with usual genitoventral setae and numerous 

 smaller accessory setae (55 to 70 in number in available specimens) ; 

 accessory setae distributed over entire shield; all genitoventral setae 

 smooth. Anal shield narrow. Specimens examined had three usual 

 anal setae and five smaller accessory setae; all anal setae smooth. 

 Endopodal shields present as thin strands at level of junction of coxae 

 III and IV. Metapodal shields small. Metasternal setae smooth and 

 as large as usual sternal setae. Ventral body setae very numerous and 

 slightly larger than dorsal setae, especially at posterior body margin, 

 where two or three pairs are distinctively longer and stouter than 

 the others. Peritreme slender, distinctive in shape, its posterior end 

 in contact with fovea of coxa IV. Epistome with almost all fimbriae 

 at its distal end; very few are lateral; most are branched. Chelae 

 lack teeth ; both possess bursae ; fixed chela the stouter. All maxillary 

 setae smooth. All palpal setae smooth ; two especially strong ventral 

 setae on tibia. Leg II shortest and stoutest; all legs with relatively 

 large, strong, smooth setae, which are stouter and fewer ventrally. 

 Length-width ratios of tarsi are: Leg 15:1, leg II 4.5:1, leg III 

 6.5 : 1, leg IV 9 : 1. 



Male. — Dorsal surface essentially as in female. Tritosternum and 

 presternal area as in female. Accessory setae present over entire sur- 

 face of ventral shield. The three usual pairs of sternal setae, as well 

 as the metasternal and genitoventral setae, recognizable. The more 

 anterior accessory setae larger, especially those lateral in position ; as 

 in the female two pairs of accessory setae present on the anterior 

 margin of the shield. Setae of the posterior, expanded portion of the 

 shield larger than those of the dorsal shield and, like them, of two 

 types. Lateral margins of the shield not anteriorly directed lateral 

 to coxae IV. All setae of ventral shield smooth. Peritremes as in 

 female. Epistome sometimes with more lateral fimbriae than in 

 female. Fixed chela toothless, with a pilus clentilis, and expanded 

 medially. Movable chela bifurcate. Maxillae and palpi as in female. 

 Leg II stouter than others and differing from that of female in the 

 following distinctive setation : Femur with three stout ventral setae ; 

 genu with one stout and one medium ventral setae ; tibia with one stout 

 ventral seta; tarsus with two stout ventral setae. All setae smooth. 



Nymph. — No nymphal specimens were available for study, but these 

 according to Oudemans (1913), may be distinguished as those of 

 hirsutus by similarity of epistome, chelicerae, and setation from those 

 of the adult female. As in the adults, setae are reported to be smooth. 



Size. — Four measurable females were 1,162/x, 1,232)li, 1,050/*, and 



