258 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



ISCHYROPODA, new genus 



Sternal shield with accessory setae; at least leg II conspicuously 

 stout and with spurs and massive, often blunt, setae especially on 

 tarsus ; anal shield of male separate ; accessory setae present on ventral 

 shield of nymph. 



Genotype : Ischyropoda spiniger, new species. 



KEY TO FEMALES OF ISCHYROPODA 



1. Movable chela toothless ; all setae on dorsal shield smooth ; leg I with a stout, 



posteriorly directed coxal spur ; genu of leg II with a similar spur. 



spiniger, new species. 

 Both chelae with teeth 2 



2. Many setae on dorsal shield barbed ; coxa I and genu II without spurs. 



armatus, new species. 



ISCHYROPODA SPINIGER. new species 



Figure 53 



Female. — Body broad but distinctly pointed anteriorly. Doi*sal 

 shield relatively short, with a blunt, slightly indented posterior mar- 

 gin ; much of dorsal surface unprotected. Usual pair of apical setae 

 situated immediately anterior to shield, smooth and shorter than setae 

 on the shield, and flanked by a pair of smaller setae ; all setae of shield 

 smooth, 30/x to 40ju, apart, and relatively large, being 80/x to 120/x. in 

 length. Shield sculptured. Setae of unprotected dorsal integument 

 smooth and those on the posterior body margin longer and slenderer 

 than those on the shield. Tritosternum barbed. Presternal area 

 sculptured but sutures lack spines. Sternal shield not clearly out- 

 lined, its lateral and posterior margins somewhat irregular; usual 

 sternal setae smooth and larger than accessory setae, which number 

 28, 27, and 23 in specimens available for study and are scattered over 

 the shield in no apparent pattern; these are of various sizes but are 

 larger near margins of the shield; none are present on the anterior 

 margin of the shield ; all are smooth. Anterior pair of sternal pores 

 nearly parallel with anterior margin of shield ; lateral end of posterior 

 pair of pores in contact with lateral margins of shield ; shield sculp- 

 tured. Genitoventral shield relatively narrow, about three and one- 

 half times as long as wide and with nearly parallel lateral margins 

 and an irregularly rounded, almost truncate posterior margin; pos- 

 sesses usual pair of genitoventral setae and several almost equally 

 as large accessory setae ; these numbered 6, 7, and 8 in the three females 

 examined. Anal shield of distinctive shape, with nearly lateral 

 margins and only very roughly triangular; three usual anal setae 

 present, all much smaller than adjacent ventral body setae; the pos- 

 terior unpaired seta nearer to the anus than to the posterior margin 

 of the shield and not quite half as large as the paired setae. Endo- 

 podal shields very slender. Metapodal shields small and oval ; in addi- 



