2. PLATE XIII. 



EUTHEMISTO LIBELLULA. 



The flagellum of the first pair of antennae. 9( 20 /'i)- 



A piece of the upper margin of the same. $ ( 80 /i)- 



A piece of the under » » » » $ ( 80 /i)- 



The apex of the first pair of antennae in a 



young female ( 30 /j). 



The apex of the second pair of antennae. 9 ( 30 /i)- 



The labrum. tf ( 12 /,). 



The left mandible. <? ( n /\). 



The apex of the same, c? ( 35 /i)- 



The incisive lamina of the same. cJ* ( 25 /i)- 



A piece of the margin of the molar tubercle. 



a* ( 200 k)- 



A tooth from the same margin, a* ( 600 /i)- 



The apex of the last joint in the mandibular 



palp. (30^). 



The first pair of maxillae, tf ( 12 /j). 



The apex of the secondary lamina of the same 



pair. J («%). 



The second pair of maxillae, a* ( 12 /i)- 



The apex of the secondary lamina of the same 



pair. rf ( 50 /,). 



The maxillipeds seen from behind, tf ( 12 /i). 



A piece of inner margin of the left lateral 



lamina in the maxillipeds. tf ( 75 /i)- 



The maxillipeds from the inner side, a" ( 12 /j). 



The maxillipeds from the side, tf ( ,2 /,). 



The apex of the median lobe in the maxillipeds. 



<? ( 2 7i)- 



Branchial sack and ovitectrix from the fifth 



pair of peraeopoda. $ ( 16 /i)- 



The first pair of peraeopoda. tf ( n /,). 



The third » » » Young tf ( 30 /j). 



The fifth » » » c? ( 5 A)- 



The dactylus of the same pair, q" ( 35 /i)- 



The fifth pair of peraeopoda. Young tf ( 3 %)- 



The dactylus of the same pair. Young o 71 ( 100 /i)- 



The seventh pair of peraeopoda. Young tf ( 3 %)- 



The first pair of pleopoda. rf 1 ( 9 /,). 



The urus. Young tf ( 25 /])- 



EUTHEMISTO COMPRESSA. 



» 32. The apex of the second pair of antenna?, tf 



( 30 /i)- 

 » 33. The first pair of peraeopoda. a 71 ( 3 %)- 



^ 



. 1 



» 



2 



)) 



3 



» 



4 



» 



5 



» 



6 



» 



7 



u 



8. 



» 



9. 



» 



10 



» 



11 



» 



12 



» 



13. 



» 



14 



» 



15 



» 



16. 



» 



17 



» 



18 



» 



19 



» 



20. 



» 



21 



» 22. 



» 



23 



» 



24 



» 



25 



» 



26 



» 



27 



» 



28 



» 



29 



» 



30 



» 



31 



Fig. 34. The apex of the carpal process in the second 



pair, d* («%). _ 

 » 35. The hind margin of the carpus in the third 



pair. rf (i%). 

 » 36. A piece of the metacarpus in the same pair. 



» 37. The fifth pair ot peraeopoda. tf ( la /,). 



» 38. A piece of the front margin of the carpus in 



same pair, o 71 ( 6 %)- 

 » 39. The dactylus in the same pair. rf ( i5 / x ). 

 » 40. The seventh pair of peraeopoda. ^ ( 13 /,). 

 » 41. A piece of the front margin of the carpus in 



the same pair, o 71 ( 43 /i)- 

 » 42. A piece of the front margin of the metacarpus 



in the same pair, a 71 ( 45 / 1 ). 

 » 43. The urus. tf ( 12 A)- 



EUTHEMISTO GAUDICHAUDII. 



» 44. The second pair of peraeopoda. o 71 ( 2 %). 

 » 45. The third » » » tf (">/,). 



a 46. The fifth » » » tf ( 10 /,). 



THEMISTELLA STEENSTRUPI. 



47. The male from the side ( 18 /j). 



48. The first pair of antennae, tf ( 35 /]). 



49 and 50. The second and third flagellar joints 

 in the same pair, q" ( 250 /]). 



51. The second pair of antennae, q 71 ( 35 /i)- 



52. The apex of the same pair, o 71 ( 15 %). 



53. The first pair of peraeopoda. a* ( ,00 /i). 



54. The second » » » rf ( 10 %)- 



55. The third » » » a* ( 35 /i)- 



56. The fourth » » » <? ( 35 /i)- 



57. The fifth » » » a* (»%). 



58. The sixth » » » a 71 ( 35 /j). 



59. The seventh » » » tf ( 35 /i)- 



60. Coupling spines from the first pair of pleopoda. 



& ( 70 %)- 



61. The cleft bristle from the same pair, cf ( 3o %)- 



62. The urus. tf ( 4 %). 



