JANIRA MACULOSA. 339 
segments of the body are transversely channelled near the 
anterior margin of each, and each segment has its lateral 
margin marked with small incisions (that vary in speci- 
mens), giving a serrated appearance to the animal. The 
white upper surface is punctured and marked with 
minute dark-brown dots. The eyes are placed some- 
what on the disc of the head, instead of occupying its 
posterior lateral angles. The two basal joints of the 
peduncle of the posterior pair of antennz are short 
and stout; the third is also short, but much narrower ; 
the fourth and fifth are long and slender, and the whole 
terminate in a long multiarticulate flagellum. On the 
second joint of the peduncle is a short, pointed, arti- 
culated plate; this is tipped with three hairs. 
The first pair of legs are somewhat larger in the male 
than in the female, and have the carpus short and 
superiorly produced over the propodos; the propodos 
is long, narrowly oval, and armed along the inferior 
margin with two or three short robust spines; the 
dactylos is as long as the propodos, fringed with minute 
cilia along the concave margin, which impinges closely 
in its entire length against the inferior margin of the 
propodos, and has its extremity furnished with two 
curved ungues. 
The tail consists of a single plate; it is flattened and 
nearly circular, with the latero-posterior margins finely 
serrated, the extremity having but a small incision, the 
terminal styles (which are about equal to the entire tail 
in length, with the basal joint about as long as the two 
terminal branches) being affixed beneath the margin of 
the tail, so that their place of insertion is not seen 
from above.* 
* We believe that the length of the antennz, and the amount of serration 
at the sides of the body and tail, vary according to age and sex. 
Z2 
