﻿EXPLANATION OF THE PLATES. 



Plate I. 



Fig. I. Calaniis liyperboreus Krojer. 

 Fig. I a. f$. Marginal setae of the labrum; >; 77. 



— I b. f $. Oral surface of the labrum ; x 200. 



— I c. f $. Lamina labialis etc. 1 = lamina labialis, s = serrula 6-clentata ; x 200. 



— I d. f $. Lobi labiales and area behind, a— c = articular cavities of the maxillulae, maxillae and 



maxillipeds; >: 44. 



Fig. 2. Macrocalanus princcps Brad)-. 

 Fig. 2 a. f$. Oral surface of the labrum; x 57. 



— 2 b. f$. Lamina labialis and anterior surface of the lobus labialis; x 57. 



Fig. 3. Megacalanus princeps Wolfendeu. 

 Fig. 3 a. f$. Labrum, lobi labiales and area behind from below; x 24. 



— 3b. f?. Oral surface of the labrum; x 77. 



— 3 c. f ?. The lamina labialis, the lobi labiales and the right mandibula in ventral and partly anterior 



view, s = serrula 6-dentata; 1 = lamina labialis; x 57. 



— 3d. f?. The left maxilla; x 24. 



— 3 e. f$. The left second foot in anterior view, gl = glandular pores; x 24. 



— 3 f. f$. Se Re I pes II sin. in anterior view; 1 == lamina cribrosa; gl = glandular pore; >: 44. 



— 7, g. f$. The lamina cribrosa; x 280. 



— 3 h. f $. The left fifth foot in anterior view; > 24. 



— 31. f r?. The segment 6 (VI) to segment 11 (XI) of left antennula; x 24. 



Fig. 4. Rhincalanus nasutus Giesbrecht. 



Fig. 4 a. Y$ (V). The anterior part of the body in left view; x 24. 



— 4 b. f $. The riglit .side of tlie abdomen in abnormal specimen ; x 44. 



— 4c. f$. The lamina labialis etc.; x 200. 



— 4d. f$. The fifth foot in abnormal specimen from Thor 1905 ,St. 88; x 90. 



— 4 e. i<^. The oral surface of the labrum; x 2S0. 



— 4 f. f c?. The left antenna in posterior view; x 38. 



— 4 g. f d'. The fifth foot in posterior view of specimen from T]u)r 1905 vSt. 88; x 90. 



— 4h. f d*. The fifth foot in posterior view of specimen (Nr. 2) from Thor 1905 St. 88; x 90. 



— 4 i. i (^. The fifth foot in posterior view of specimen (Nr. 3I; x 90. 



— 4j. f cf. The fifth foot of an abnormal specimen from Thor St. 88; x 90. 

 -- 4k. YJ' (V). The fifth foot in posterior view; -90. 



— 4I. Yc? (IV). The fifth pair of legs in posterior view of specimen from Thor' 1905 St. 72; x 90. 



The Ingolf.Expi-diti.ra. HI. ,|. 3^ 



