OXFORD UNIVEKSITY SPITSBERGEN EXPEDITIOJv^. 1121 



The testes are small, and not lobed. Sperm-morulfe and the 

 early stages of spermatozoa are free in segm. xi., but not in large 

 numbers. 



The male funnel is small, snbspherical in shape, 108 /x in 

 diameter, with spermatozoa clustering ronnd its mouth. The first 

 portion of the vas deferens is of a diameter of 15 /x, but this is- 

 only for a very short distance on both sides of the septum, and 

 the main part of the duct forms a very narrow tube 6 /x in 

 diameter, packed tightly in a coil just behind the septum and 

 entu^ely in front of the level of the male pore. The penial body 

 is of the lumbricillid type, subspherical in shajDC, 120/x in diameter, 

 compact, with a definite outline and contained in a definite- 

 muscular capsule. 



The ovary is small ; large ova are contained in segm. xii. 



The spermathecal duct is straight for the most part, of some 

 length, 28 /i in diameter, directed downwards and forwards j 

 towards its ental end it bends inwards ; there are a few pear- 

 shaped lobules of cells around its ectal end, but these may be 

 peritoneal aggregates and not epithelial gland-cells. The ampulla 

 is only slightly dilated, measuring 56ft in diameter; the two 

 ampullcG are continuous across the middle line — there is not even 

 a narrowing of the lumen to demarcate one from the othei'. 

 There is no connection between the lumen of the oesophagus and 

 that of the ampullie ; the structures do not anywhere come into 

 conta,ct. The length of the conjoined ampullae is 160 /x (computed 

 — it extends through 20 longitudinal sections each of a thickness 

 of 8 u). 



There are no copulatory (ventral) glands. 



The first specimen is altogether smaller than the second, and was 

 collected a little earlier. The diameter of the male funnel is 75 iJ. ; 

 though here, too, spermatozoa ai'e clustering round the n)outh. 

 The penial body is also about 75 /x in diameter. The sperma- 

 thecal ampulla is no wider than the duct, though the epithelium 

 is much lower and the lumen therefore more capacious ; the inner 

 ends of the ampullae are not in contact either with the oesophagus 

 or with each other; there is an interval of about 1 6 /a between 

 the ampullcTB of the two sides. 



HeNLEA (HexLEA) BPtUCEI, sp. n. 



Spitsbergen ; dry tundra, among Lo'yas, etc., on hill near coast^ 

 Presli water Bay, Prince Charles Foreland; 10.vii.]92]. A single 

 specimen. 



Spitsbergen ; Bruce City region (no data concerning habitat) ; 

 10.viii.l921. A single specimen. 



Spitsbergen ; among plants growing on shingle of raised^beach, 

 Bruce City ; ll.viii.l921. Tv/o specimens. 



Length 6-8 mm.; diameter •31-"46 mm. Segments 40-4.3. 

 Colour brown (probably in part at least due to preservative). 

 Prostomium short and rounded. Head-pore on dorsal suiface of 

 prostomium. No dorsal pores. 



