1902. 



ANATOMY OF THE PEDIPALPI. 



Text-fig. 42. 

 tr. 



.177 



B km . tk 



Mouth-parts of the Pedipalpi of the families Thelyplionidce, Fhrynida, 

 and of the Pseudoscorpioiies (Chernetes). 



/* A. Portion of the inner surface of the right coxa of the chela of one of the Thely- 

 phonida [Kypoctonus formosus) with lettering as in text-fig. 41, and lam., 

 one half of the finelj' grooved and hairy spoon- or bowl-shaped lamina which 

 embraces the camarostome and forms the floor of the preoral gutter with 

 which the ventral wall of the pharj'nx {ph.) is continuous ; p', point marking 

 the anterior extremity of the hinge resulting from the fusion of the inner 

 surfaces of the two coxaj ; p", point marking the anterior extremity of the 

 hinge between the proximal plate {clypeus) of the camarostome and the coxa 

 of the chela. 

 B. Lateral view of the mouth-parts of Titanodamon jolinstoni, one of the ambly- 

 pygous Pedipalpi, showing the inner (preaxial) surface of the coxa of the 

 chela of the right side, that of the left side being cut away with the cheli- 

 ceree : ent., vertical median entosclerite affording support to the dorsal 

 dilator muscle {ms) of the pharjmx {ph.) ; cam., camarostome with its horny 

 basal sclerite overhanging the mouth {m.) ; lam., horny plate on the coxa of 

 the chela, !-epresenting one half of the grooved spoon-shaped suboral sclerite 

 of the Thelyphonidce ; mb., hairy membranous tract; tr., portion of second 

 segment or trochanter of chela; ff, coxal groove; th., thickening of the 

 integument of the coxa to afford support to the anterior ventral apophysis of 

 the entosternite ; st., sternal plate of second postoral somite. 



/Q, C. Dorsal view of the coxal segments of the chela? of Titanodamon johnstoni, with 

 the camarostome and pharynx. Lettering as in B. 

 D. Ventral view of the mouth-parts of one of the Pseudoscorpiones ( Garypus), the 

 coxai of the chela forcibly separated to show the narrow blade-like hypo- 

 stomial process or labium {lah.), which perhaps represents the sternal plate 

 of the first postoral somite, projecting between the two inferior lobes ot the 

 camarostome {cam.) ; mx.p., membranous maxillary process of the coxa. 



Proc. Zool. Soc— 1902, Vol. II. No. XII. 12 



