PLATE IV. 



Fig. I. Acetes dispar n. sp. (Continued). 

 Fig. ia. Postcrior part of thorax of a female, from below ; X 21. 



Fig. 2. Acetes dispar var. vel sp. n. 

 Fig. 2a. Posterior part of thorax of a female from lat. 24 17' N., long. ii8°I5'E., from below; X <3- 



Fig. 3. Acetes cltinensis n. sp. 

 Fig. 3«. Exopod of left uropod of a female; X 7- 

 Fig. ib. Posterior part of thorax of a female, from below; X 13. 



Fig. 4. Acetes serridatus Kröyer. 

 Fig. 4a. Anterior part of the carapace with the right eye, antennula and antenna of a male, from above; X 9- 

 Fig. 4b. Front end of the carapace of a female, from the left side; X 29. 

 Fig. 4c. End of third peduncular joint of left antennula with lower flagellum and the proximal part of 



upper flagellum of a male, from the left side; X 39- 

 Fig. 4d. Exopod of left uropod of a male; X II- 



Fig. 4e. Posterior part of thorax of a male, from below; X 27 /r ge. genital coxae. 

 Fig. 4 f. Posterior part of thorax of a female, from below; X 15- 



Fig. 4g. Left petasma, from behind; X 33- c. capitulum ; e. pars externa; m. pars media. 

 Fig. 4/1. Capitulum of the same petasma, from behind; X 72. 



Fig. 5. Acetes spiniger n. sp. 

 Fig. 5«. Anterior part of carapace with right eye, antennula and squama of a male, from above; X scarcely 7. 

 Fig. 5$. Front end of the carapace of a male, from the left side; X 29. 

 Fig. 5 c End of third peduncular joint of left antennula with lower flagellum and the proximal part of 



upper flagellum of a male, from the outer side; X 30. 

 Fig. $d. Exopod of left uropod of a male; X 9. 



Fig. 5 r. Posterior part of thorax of a male, from below; X 13. ge. genital coxae. 

 Fig. 5/. Posterior part of thorax of a female from Surabaya (Java), from below; X 10. 

 Fig- Sg- Left petasma, from behind; X 22. e. pars externa; c. capitulum; pv. processus ventralis. 

 Fig. 5 h. Distal half of pars media of the same petasma, from behind ; X 38. c. capitulum ; pv. processus ventralis. 



Fig. 6. Lucifer typits H. M.-Edw. 



Fig. 6a. Posterior part of abdomen with left uropod of a male from lat. 5°3i ' N., long. 23°i5'W., from 



■the left side; X scarcely 17. 

 Fig. 6b. Terminal part of the exopod of the uropod shown in fig. 6a; X 50. 

 Fig. 6c. Terminal part of the exopod of left uropod of another male; X 50. 



Fig. 6d. Terminal part of the exopod of left uropod of a female from the same locality in the Atlantic; X 50. 

 Fig. 6e. Telson of a male from the same locality, from the left side; X 43- 

 Fig. 6/. Telson of another male from the same locality, from the left side; X 43. 

 Fig. 6g. Major part of the peduncle of first left pleopod of a male from lat. 5°3i'N., long. 23°i5'W., 



from the inner side; X 78. The petasma is partly unfolded and its rather narrow terminal 



portion removed from the pleopod. p. process at the margin of the pleopod beyond the petasma. 

 Fig. 6/1. Terminal portion of the same petasma drawn with transmitted light so that the strongly chitinized 



parts are rendered with dark shading; X 160. h. long-stalked hook; pv. processus ventralis; 



s. dark undulating transverse lines. 

 Fig. 6i. Terminal portion of another petasma drawn with transmitted light, and processus ventralis has 



been taken out; X 160. The lettering as in fig. 6/1. 

 Fig. 6k. Terminal portion of a third petasma, seen from behind; X 160. The processus ventralis, pv., has 



been turned out of the sheath, s/i. ; //. hook. 



Fig. 7. Lucifer orientalis n. sp. 



Fig. ja. Posterior part of abdomen with left uropod of a male from Stat. 203, from the left side; 14. 



Fig. jb. Terminal part of the exopod of the uropod shown in fig. ja; X 50. 



Fig. je. Terminal part of the exopod of left uropod of a female; X SO. 



Fig. jd. Telson of a male, from the left side; X 43- 



Fig. je. Peduncle of first left pleopod of a male from Stat. 203, from the inner side; X 54- The petasma 

 is partly unfolded and its narrower terminal portion removed from the pleopod. p. process at 

 the margin of the pleopod. 



Fig. jf. Terminal portion of the same petasma drawn with transmitted light; X 160. pv. processus ven- 

 tralis; s. transverse lines. 



Fig. j g. Terminal portion of another petasma, seen from behind, and the processus ventralis, pv., has been 

 turned completely out of the sheath; 160. 



Fig. 8. Lucifer intermedius n. sp. 



Fig. 8a. Front end of cephalothorax with left eye, antennular peduncle, and basal part of antenna with 



squama, sa., of a male from Stat. $J, from the left side; , 21. 

 Fig. Sb. Telson of a male, from the left side; X 40. 



