294 
C irru s I has on its inner ramus 12, on its outer 13 seg¬ 
ments; the basal segment of the outer ramus evidently consists of 
two coalesced segments. In cirrus II the rami have 11 and 13 
segments. In both cirri the 
outer ramus is longer than 
the inner ramus by two 
segments and a half. Cirrus 
III is damaged in the spec- 
imen examined. 
The caudal append- 
ages are short, only little 
longer than the protopod- 
ite of cirrus VI; they con- 
sist of 12 segments. 
It is not without hesit- 
Fig. 42. Verruca cristallina f. laevis , 25 miles E of ation that I refer the preS- 
Zamboanga. a mandible, b maxilla, c distal two en j. S p ec j m enS tO VerrUCa 
segments of the injured cirrus III showing mode 
ofregeneration. [X 87]. CTistdllinCL . AcCOfding tO 
Gr uv el (1917) the spec- 
imens from the Andaman Islands have a more heavily sculptured 
fixed tergum and scutum, each of which moreover is adorned with 
an interlocking rib. On the other hånd, the ribs of the movable 
scutum are more prominent in the present specimens, and also 
the small scutal ribs of the rostrum are more numerous. These 
characters may nevertheless fairly well come within the range of 
variation in a species. 
Also the features of the animal’s body seem to differ in some 
points. Gr uv el found in his specimens caudal appendages halfas 
long as cirrus VI with 25 segments, whereas the caudal append¬ 
ages of the present specimens are only little longer than the prot- 
opodite of cirrus VI, and consist of only 12 segments. Also in 
the mouth feet differences seem to be present, although they can- 
not be made out with certainty because of the rather schematic 
drawings of Gru vel. 
We are not at present able to judge of the systematic value 
of the said characters, and 1 have, therefore, preferred to designate 
the present specimens as belonging to Verruca cristallina, although 
representing a special forma laevis. Later investigations on larger 
