46 IVAR ARWIDSSON, SYSTEMATIC NOTES ON SOME MALDANIDS. 



26. Portion from the posterior part of a strongly contracted proboscis; the ruiddle line is situated about 2 [ 3 to the 

 right of the drawing. 10: 1. — Pleasant Beach. 



27. Anterior region as far as the 9 th setigerous segment. Glands. 55: 1. — Departure Bay. 



28. Rear end from the posterior portion of the last or 18 th setigerous segment. Glands. 5: 1. — Near Victoria, 

 Vancouver Island. 



29. Part of the 17 th setigerous segment from the right, showing the arrangement of the groups of glands from 

 the ventral nerve-cord to the mid-line of the back. Glands. 16: 1. 



Euclymene modesta. 



30. Head from above. Glands. 12: 1. 



31 (a — b). Anterior and middle parts including 15 th setigerous segment, from below. Glands. 4: 1. 



32. Setigerous segments 7 — 15, seen from above. Glands. 4: 1. 



33. Setigerous segments 7 — 9, seen from below obliquely. Glands. 4: 1. 



34. Posterior part including 18 th setigerous segment from beneath. Glands. 4: 1. — Specimen has 31 anal cirri. 



35. Posterior end including 20 th setigerous segment, from the left side. Glands. 4: 1. 



Caesicirrus neglectus. 



36. Part of the 8 th setigerous segment, seen from beneath. Glands. 5: 1. 



37. Part of the 8 th setigerous segment, seen from beneath. Glands. 6'5: 1. 



38. Part of the 8 th setigerous segment, seen from above. Glands. 6'5: 1. 



39. Setigerous segments 4 — 8, seen from above. Glands. 4: 1. 



40. Abnormal posterior end from the 2 nd anteanal achaetous segment inclusive, from below. Glands. 8'5: 1. 





Tryckt den 23 december 1922. 



Uppsala 1922. Almqvist & Wiksells Boktryckeri A.-B. 



