Hughmilleria socialis Sarle 
Page 335 
See plates 59-61, 63 
Swimming leg, disjointed, showing the form of the joints. x 2% 
Complete swimming leg. x 3 
Two coxal joints of swimming legs. Natural size 
Two metastomas showing slight variation in form. Natural size 
Coxal joint of fourth walking leg showing large perforation of unknown 
function 
Coxal joint of walking leg. x 3 
Female genital appendage of second sternite. Natural size 
Female genital appendage of second sternite, showing its partial cover- 
ing by opercular appendage. x 24 
Middle portion of operculum and second sternite, from within showing 
female genital appendages and partial covering of appendage of second 
sternite by opercular appendage. This second appendage should have 
been drawn into a more elongate tubular form. x 34 
1o Same as preceding from the outside, showing appendage of second 
sternite fully exposed. The longitudinal groove shown on this appen- 
dage is the result of pressure against the overlapped edges of the 
right and left halves of the sternite. x 34 
1m View of male operculum and second sternite showing fused parts of 
opercular appendage and lanceolate shape of appendage of second 
sternite seen from inside. x 2 
Horizon and locality. Pittsford shale. Pittsford, N. Y. 
The originals are all cotypes and are in the State Museum 
CONTI CN Mm B® N & 
\O 
564 
