2. PLATE XV. 



DAIRELLA LATISSIMA. 



The male from the side ( 12 /i)- 



The first pair of antennae, tf ( 23 /i)- 



The second » » » tf ( 50 /i)- 



The Iabrum. <? ( I2 %). 



The right mandible. <? O 20 /,). 



The first pair of maxillae, a* ( 12 %)- 



The second » » » <f ( 12 %). 



The maxillipeds from the inner side, o 71 ( 120 / 1 ). 



The first pair of peraeopoda. <? ( 30 /i)- 



The dactylus of the same pair. ^ ( 110 / 1 ). 



The fourth pair of peraeopoda. tf ( 30 /i)- 



The dactylus of the same pair, a* ( 35 %). 



The seventh pair of peraeopoda. o 71 ( 30 /i). 



The first pair of pleopoda. tf ( 30 /i). 



The head and the first three peraeonal segments of a young male. ( 24 /,). 



The female from above ( 10 /j). 



The first pair of antennae. 9 ( 80 /i)- 



The dactylus of the first pair of peraeopoda. 9 ( 110 /))- 



Branchial vesicle and ovitectrix from the third pair of peraeopoda (z^^). 



The urus. $ ( 25 /j. 



DAIRELLA CALIFORNIA. 



21. The female from the side (1%). 



22. The first pair of antennae. $ ( 3 %). 



23. The first pair of peraeopoda. $ ( 30 /i)- 



24. The seconds » » $ (2%). 



25. The dactylus of the same pair. 9 ( 100 /i)- 



26. The third pair of peraepoda. 9 ( 25 /i)- 



27. The dactylus of the same pair. 9 I 300 /!). 



28. The fifth pair of peraeopoda. 9 ( 25 /j). 



29. The dactylus of the same pair. 9 ( 20 %). 



30. The seventh pair of peraeopoda. 9 ( 25 /i)- 



31. The dactylus of the same pair. 9 ( 26 %)- 



32. Coupling spines from the first pair of pleopoda. 9 ( 60 %)- 



33. The urus. 9 (*%). 



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