1914-J S.Kemp: Onychophoni. ^yg 



ganglion. It extends backwards through the ganglionic substance 

 of the brain, but decreases rapidly in diameter; at its actual point 

 of attachment with the white matter it is exceedingly slender 

 (pi. XXXV, fig. 2). 



The antennary nerve appears to be considerably stouter than 

 usual. Possibly, as some compensation for its blindness, the an- 

 tennae are more sensitive in Typhloperipatus than in other forms. 

 The curious scale-bearing patch on the lower surface may well be 

 tactile in function. 



The brain differs rather noticeably in shape from those of the 

 species figured by Balfour and Bouvier. Fig. i, plate xxxv repre- 

 sents a dorsal view of the entire brain in its grosser detail,, 

 reconstructed from serial sections, the white matter being indi- 

 cated as a solid mass lying within the ganglionic substance, which 

 is shown in partial transparency. 



Salivary glands. 



These glands are well-developed in Typhloperipatus , but vary 

 considerably in length in the specimens in which I have ex- 

 amined them. They may extend only to the twelfth pair of legs 

 or may reach to a point between the fifteenth and sixteenth pairs. 

 In sections they are sometimes, but b}^ no means always, found 

 lying in a cavity which may have considerable dimensions. In one 

 instance a cavity is found surrounding the posterior end of the 

 gland ; but, as far as I am able to detect, there is no communi- 

 cation between it and the gland : there is no such cavit}' on the 

 other side of the bod^^ 



Evans writes of "coelomic end-sacs of enormous size" in 

 Eoperipatus which form a most conspicuous feature in transverse 

 sections. I presume that the asymmetrical cavity found in the 

 Abor specimens must be homologous with these " coelomic end- 

 sacs", but it is evident that the resemblance between the two 

 genera is by no means close in this respect, unless the spaces 

 should prove in both cases to be artificial. Bouvier does not seem 

 to regard the presence of these sacs in Eoperipatus as a feature of 

 any importance, since he has omitted all reference to them in his 

 memoir. 



Renal glands. 



A typical renal gland from the ninth leg-bearing segment is 

 shown in pi. xxxv, figs. 5 and 6. It consists of the customary five 

 parts, namely the ectodermal duct, the bladder, the coiled tube, 

 the funnel and the coelomic end-sac. There is, of course, no renal 

 gland at the base of the legs opposite the genital opening and that 

 of the last leg-bearing segment is but little developed in the 

 female and, apparently, wholly absent in the male. In the male 

 too, the renal glands of the two pregenital segments are poorlv 

 developed, the bladder being much reduced in size and the coiled 

 tube practically non-existent (pi. xxxv, figs. 7-10), The gland of 

 the third pregenital segment is, however, well formed. 



