20 A Canadian Arctic Expedition, 1913-18 



F.XI'LAXATION OF PLATES. 

 All the figures except \<>s. l<), 'JO, (17. 70 and 71 are from -specimens collected by the Expedition. 



PLATE 1. 



Fig. 1. I'otliira di/udlicd, right hand foot, X 337. 



'2. I'othi/'d d({Udtird, dorsal aspect of left macro, X 577. 



I'odm'd (ujiidticd, left macro, X 577. 

 \. Ai-honttc* tnllbcriii, eyes of left side, X 577. 



\flionth'ii tullbt-nji, sense organ of third antenna! segment of right side, X 908. 

 I). Acliorutf* tiillhi'rni. right, mid foot, X 577. 



7. .\i-honitrx tiilll)<'r</i. left macro, X 577. 



8. Achorutes tiiUhert/i, right macro, X 577. 

 '.i. .\efionitex tiillhert/i, left macro, X 577. 



10. Acliorute* titllherifi. anal spines, X 908. 



PLATE 2. 



Fig. 11. Achoritte* (iillherdi, right anal spine, X 577. 



12. Arhorute* .ST//.S///X postantennal organ and two eyes of left side, X 577. 



sense organs of third antennal segment of left side, X 577. 



left hind foot, X 341. 



right mucro, X 577. 



left mucro, X 577. 



left anal spine, X 560. 



dorsal setae of second abdominal segment, X 297. 



13. Arhorut.es sens/It's 



14. Arhorute* 



15. Achonites 

 1(1. A ch orates 



- 17. Arhorutes sensil/s 

 1^. Achorutex sensili.x 



19. Aclioriitc* r/dtints, sense organ of third antennal segment of right side, from a European 



specimen, X 90S. 



20. Arhorutes ridti'-nx, dorsal setae of second abdominal segment, from a European speci- 



men, X 337. 



PLATE 3. 



Fig. 21. Achorutes armatus, lefi post antennal organ, X 505. 



22. Arhorufes <i mint UN, right fore foot, X 300. 



2:i. Arfiorutc* drnidtu*, left macro, X 505. 



21. Arhoruti'x dniidtuN, left anal spine, X 505. 



25. Arliuruti-x nrnidliis. dorsal seta 1 of first abdominal segment, X 295. 



2<>. Oui/cfiiiirux duodecimpuncta^US, right postantennal organ, X 505. 



27. Omjchiiirux duodecimpunctatus, pseudocelli of right antennal bas<\ X 295. 



O////r//////-//.s iliioiliTJin i>iiurt<ttiix, sense organ of third antennal segment of left side, X 800. 

 2!). Oui/rfiiuniN duodecimpuncfatus, dorso-lateral aspect, to sho\v pseudocelli, X 35. 

 :^(). ()n//rhiuru* diAodecimpunctatus, left hind foot, X 505. 



PLATE 4. 



I. Oni/cliiiirus duoilrr/.iti/ninctdt-iix, right anal spine, X (>35. 

 :>2. O////f7/////-//.s duodedmpunctatUS, dorsal seta- of second abdominal segment, X 295. 



:;:;. Tetracanthdla irdhlt/rcn/, X 42. 



ill. 'l'r/rdrdnlfn'l!d inilil.t/rcn/ , eyes and post ant ennal organ of right side, X 252. 



Tetracanthella //v////f//v///. sense organ of thii-d antennal segment of left side, X S25. 



Mil. TetracantheUa irdhlt/rcni, extremity of abdomen, X 1S5. 



37. T< trdrdiithclld irdhlijrt ni , dorsal aspect of anal s])ines, X 250. 



PLATE 5. 



Fig. 3S. TftmniHlhrlln irnhhjrrni , left hind foot, X 505. 



:;'.). Trti-dcdttlficlld imhlijreni, furcula and tenaculivin, X 505. 



10. T<-ti-<ic<iiilhclld ir<ilil(/rcrii, dors;il aspect of macrodent es, X 505 



11. 

 12. 



T<-ti-<ic<iiilhclld ir<ilil(/rcrii, dors;il aspect of macrodent es, X 505. 



Tetracanthella wahlgreni, dorsal setst of GIB\ abdpminal segment, X 2 ( .)5. 



. f-'olso/uid t/iidi/riocn/dfd, eyes and postantennal organ of left side, X 505. 



13. Fnlxoinid ijiidflrioruldld, sense organ of tliird antennal segment of right side, X 825. 



11. f-'n/xtintni (/iuiflrioriil.dt'i, right hind foot, X 505. 



15. fr'olxnmid (/n<id'ri"fn/d/(t , portion of furciila, X 505. 



Mi. I<'t>lx<nnid f/tidi/norit/d/d, left aspect of furcula, X 295. 



17. Fnlxoniin <iun<lri<-nl<il<i . dorsal seta' of second abdominal segment, X 295. 



