NO, 10 KKEDING OI<(iAN> ol .\K.\( II N IDA — SNOIKiKASs 35 



Spinneret (B, C, Spn) known as the "galea." Tlie spun silk is used 

 for the making of cocoonlike nests in which the animal encloses 

 itself for moulting, brood purposes, or for hilK-rnation. The silk 

 glands, therefore, are best develoj)cd in the immature stages and in 

 the adult female; the glands of the adult male become reduced, and 

 in some cases they appear to be absent. 



The female pseudoscorpion deposits her eggs in a gelatinous brood 

 sack attached around the genital ai)erture on the under side of the 

 abdomen, and the young after hatching undergo their development 

 iiere, fed on an albuminous substance discharged from the ovaries of 

 the mother, until they are fully formed young pseudoscorpions. Some 

 species carry the eggs and the young about with them in the o{x;n, 

 but with most species the female encloses herself in a silken cfKoon 

 until the young are able to live independently. The remarkable 

 metamorphosis that the young pseud(jscorpion undergoes during its 

 development is described by Barrois (1896), and an interesting ac- 

 count of the construction of the brood cocoon is given by Kew ( 1914). 



The chela of the cheloncthid j)cdipalp, as already shown (p. 14. 

 tig. 5G), has the same general structure as the chela of a scorpion 

 (fig. 5 E, F) but it possesses the unique feature of containing in 

 most species one or two glands supposed to secrete a venomous litjuid. 

 According to Chamberlin the glands may be present in both the mov- 

 able and the fixed finger, in the movable finger only, or in the fixed 

 linger only ; in four families, however, they are absent. Each gland 

 (fig. II D, VGld) consists of several elongate sacks with a common 

 duct {Del) opening through a pore (J'Pr) on a subapical, toothlike 

 l)rocess on the convex side of the finger containing the gland. 



The coxae of the pcdipalps are free from each other, and are 

 connected only at their bases with the narrow membranous ventral 

 wall of the body between them (fig. 12 B, IICx). Anteriorly the 

 coxae are produced into a pair of thick processes (cxf>), normally 

 embracing the labrum (figs, ii A, 12 A). Thougii these coxal exten- 

 sions are called "manducatory" processes, they have no chewing func- 

 tinn, and serve merely to form the lateral walls of the prcoral food 

 chamber. A flat dorsal api)endage arising from the base of each lolx' 

 in most species, and a thin ventral fiange (fig. 12 A, Is, li) art- known 

 res{)ectively as the lamina superior and the lamiua inferior. 



The labrum projects between the coxal processes of the iK-dii>alp.s 

 as a free lobe of varying width in different sjjecies (fig. 12 A, B. Lm). 

 The dorsal surface of the labrum is continued proximally into an epi- 

 stomal plate (A, Epst), which is mostly invaginated into the anterior 

 body wall below the bases of the cheliccrae, and thus becomes prac- 



