368 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
of the segment in the form of a small cleft on the posterior margin 
a short distance from the lateral margin. On the underside the coxo- 
podite is separated only posteriorly in the form of a tooth. The six 
following segments of the thorax are subequal in length. The coxo- 
podites of the second segment are small, but quite prominent on the 
underside, and are in the 
form of a sharp tooth. 
The coxopodites of the 
aw third and fourth segments 
are small and are repre- 
Fig, 12. Fig. 13. sented on the upper part 
Fig. 12.— Spherillo testudinalis. First and sec- of the underside of the 
ond thoracic segments. (Lateral view). 16. x segments by a thickened 
Fig. 13.— Spherillo testudinalis. Head and first : 
three thoracic segments. (Ventral view). 16. xX ridge. In the last three 
segments the coxopodites 
are large and prominent and are in the form of thickened processes 
on the underside. 
The first five segments of the abdomen are about equal in length. 
‘The lateral parts of the first two are covered by the last thoracic — 
segment. The lateral parts of the third, fourth, and fifth segments 
are expanded and the third segment has distinct coxopodites on the 
underside similar to those of the preceding thoracic segments. The 
terminal abdominal segment is tetragonal, wider at the base than at 
the apex, which is truncate, and contracted in the middle. The uro- 
poda are short, not reaching beyond the extremity of the last abdomi- 
nal segment. The basal article is large, wide, truncate at the apex, 
and occupies all the space between the last segment of the abdomen 
and the lateral parts of the preceding segment. The outer branch 
is small, conical, and placed on the dorsal side of the basal article in a 
groove which extends to 
—~ the middle of the dorsal 
LA) side. The inner branch is 
——* small and narrow and does 
Bye Be ek not quite reach the ex- 
Fig. 14.— Spherillo testudinalis. Terminal seg- tremity of the last ab- 
ment of abdomen with urcpoda. (Dorsal view). ore 
Ap r8 dominal segment on the 
Fig. 15.— Spherillo testudinalis. 'Terminal seg- wnderside. 
ment of abdomen with uropoda. (Ventral oy ae kb 
SPE WPS, In color it is dark brown 
with patches of light brown 
at the sides of the body in which are wavy lines of dark brown. A 
dark band extends along the median line. Patches of light brown 
extend also along the lateral parts ofthe segments. 
