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BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Male seen from above, X 1. 
Same male seen from below, X 22. 
Head of the same male seen from below, X 36. 
2, Munidion princeps, n. gen., n. Sp. 
Anterior part of the head of the large female seen from below, scarcely 
X 10; c, labrum ; d, mandible ; f, maxilla. 
Left maxilliped of the large female, seen from below, scarcely X 7. 
Normal male, X 43. 
Misshaped male, X 28, 
Head of the normal male, seen from below, X 39. 
Left leg of first pair of the normal male, X 44, 
PLATE V. 
1. Munidion princeps, n. gen., n. sp. (continued). 
The large female seen from above, about X *?; aš, pleural plates of the 
fifth abdominal segment. 
Same female seen from below, about X 4°; 1, rami of first pleopod on 
the right side (of the animal, left side of the figure) ; 1’, rami of first 
pleopod on the left side ; 4, rami of fourth pleopod on the right side ; 
5, rami of fifth pleopod on the right side; 5’, rami of fifth pleopod on 
the left side; 6, rami of the right uropod; 6’, rami of the left uropod. 
Left leg of first pair with its marsupial plate of the same female, seen 
from below, scarcely X 7. 
Posterior part of the marsupial plate exhibited in the preceding figure, 
and seen from above, X +7. 
Left leg of sixth pair of the same female, scarcely X 7. 
2. Pseudione galacanthe, n. sp. 
Large female, seen from above, X 2; 6, uropods. 
Same female seen from below, X $; 1’, rami of first pleopod on the left 
side (of the animal); 4’, rami of fourth pleopod on the left side; 5, rami 
of fifth pleopod on the right side; 5’, rami of fifth pleopod on the left 
side; a, pleural plates of fifth abdominal segment. 
Anterior part of the head of female, seen from below, X 10; a, antennula ; 
b, antenna ; c, labrum; d, mandible ; e, maxillula ; f, maxilla; p, frontal 
plate. 
Left maxilliped of female, seen from below, X 10. 
Left leg of first pair with its marsupial plate, seen from below, X 10. 
Left leg of sixth pair of female, X 10. 
Largest male, X 10. 
Head and a part of the first thoracic segment of a smaller male seen from 
below, X 39; f, maxilla; 9, maxilliped. 
Left leg of first pair of the last named male, X 47. 
Left leg of seventh pair of the same male, X 47. 
