ra 
j 
pi 
P 
T'ransactions.— Zoology. 
EXPLANATION OF PLATES I.—III. 
Prate I. 
Scutuloidea maculata x 19; a,innerantenna x 40 ; b, auditory seta from same, 
more highly magnified ; c, mandible x 40; d, first maxilla x 40; e, second 
maxilla x 74; f, seta from outer lobe of same highly magnified ; g, inner lobe 
of same x 160; h, maxilipede x 40; k, first thoracic leg x 15; 1, end of 
same X 40; m, second thoracic leg x 15; n, end of same x 40; o, one of the 
pleopoda x 30; p, abdomen from below x 12. . 
Hymenosoma lacustris; a, third (external) maxillipede x 10; band c, different 
forms of sete from the same, more highly magnified ; d, chela of male x 8; 
e, abdomen of male x 15. 
Cubaris rugulosus ; a, inner antenna x 40; b, outer antenna x 10; c, scale-like 
markings on the integument x 120. 
Anthura affinis; a, antenne from above x 23; b,firstthoracieleg x 15; c, second 
thoracie leg x 13; d, extremity of same, more highly magnified ; e, abdomen, 
with telson and last pair of pleopoda, from above, x 30; f, first pleopod x 30. 
Plakarthrium typicum x 12; a, inner antenna x 18; b, outer antenna x 18; 
c, mandible x 120; d, first thoracic leg x 18; e, extremity of same x 75; 
J, third thoracic leg x 40; g, one of the pleopoda X 30; h, another form of 
the pleopoda x 30; k, last pair of pleopoda x 24. 
Puate II. 
Limnoria segnis; a, antennæ from above X 60; b, mandible x 120; c, maxilli- 
pede X 120; d, appendage of sixth segment of pleon x 40. 
Nicea egregia, female x 6; a, portion of flagellum of upper antenne with audi- 
tory cilia x 40; b, portion of flagellum of lower antenna x 60; c, mandible 
X 40; d, maxillipede x 60; e, first gnathopod x 30; f, second gnathopod of 
fully developed male x 13; g, second gnathopod of young male x 13; h, 
transverse section through one of the segments of pereion of male x 15; 
k, extremity of pleon x 30; 1, telson, from above x 40. 
Moera spinosa; a, second gnathopod of female, which is the same as second 
gnathopod of left side of male x 13. 
Moera petriei ; a, second gnathopod of female x 13. 
Harmonia crassipes ; a, first gnathopod of female x 35; b, second gnathopod of 
female x 35. 
Praire III. 
Cyproidia (?) crassa X 80; a, upper antenna, and b, lower antenna, in position, 
X 70; c, first gnathopod x 70; d, telson and three posterior pleopoda from — 
above x 120. i 
Podocerus frequens x 30 ; a, first gnathopod x 40; b, second gnathopod of male 
X 30; c, extremity of pleon x 70. 
Moera incerta X 13; a, first gnathopod x 30; b, second gnathopod x 30; c 
fifth pereiopod x 30; d, dactylos of same X 120; e, telson and last pair of 
pleopoda from above x 30. 
