146 



ME. T. SCOTT ON ENTOMOSTEACA 



Fig. 7. Mandible. X 125. 



8. Anterior foot-jaw, X 165 



Mecynocera Clausi, I. C. Thompson. 



Fig. 9. Abdomen and candal stylets, female. 63 X. 

 10. Abdomen and caudal stylets, male. X 63. 



Rhincalanus aculeatus, n. sp. 



Fig. 11. Female, dorsal view. X 12'5. 

 13. Female, lateral view, x 12"5. 



13. Anterior antenna. X 12'5. 



14. Posterior antenna. X 20. 



15. Mandible. X 76. 



16. Maxilla, x 17. 



17. Anterior £oot-jaw. x 40. 



Fig. 18. Posterior foot-jaw. X 32. 



19. Foot of first pair. X 38. 



20. Foot of second pair, x 30. 



21. Foot of fourth pair, x 30. 



22. Foot of fifth pair. X 38. 



23. (?) Immature female, x 10. 



24. Foot of fifth pair of same. X 



17. 



Fig. 25. Female, dorsal view. X 9. 



26. Anterior antenna. 



27. Posterior antenna. 



28. Mandible. X 18. 



29. Maxilla. X 18. 



30. Anterior foot-jaw. 



31. Posterior foot-jaw. 



32. Foot of first pair. 



Aziffaptilis Rattrayi, n. sp. 



Fig. 33. Foot of third pair, x 20. 



34. Foot of fifth pair, x 28. 



35. Rostrum, x 32. 



36. Portion of seta of the posterior foot-jaw 

 {aa, " buttons " more highly magni- 

 fied). X 380, 



37. Portion of test highly magnified. 



Fig. 38. Male, dorsal view. X 20. 



39. Anterior antenna, female. 



40. Mandible. X 115. 



Augaptilis hecticus, Giesbrecht. 



Fig. 41. Anterior foot-jaw. X 70. 

 X 13. 42. Abdomen and caudal stylets, female. 



X 20. 



Heterocalanus serricaudata, n. sp. 



Fig. 43. Female, dorsal view. X 32. 



44. Female, lateral \Aew [a, ovisac more 



highly magnified). X 32. 



45. Posterior foot-jaw. X 190. 



Fig. 46. Foot of fifth pair, female. X 135. 



47. Abdomen and caudal stylets, female. 



X 7G. 



48. Abdomen and caudal stylets, male. X 76. 



Plate III. 



Heterocalanus serricaudatus, n. sp. 



Fig. 1. Antenior antenna, female, x 100. 



2. Right anterior antenna, male, x 76. 



3. Posterior antenna, x 70. 



4. Mandible («, mandible palp), x 190. 



Fig. 5. Anterior foot-jaw. x 250. 



6. One of the swimming-feet, x 128. 



7. Fifth pair of thoracic feet, male, x 150. 



