NEW SUBTERRANEAN COPEPODS—JAKOBI AND SILVA 391 
A.1 6-jointed, true second article absent, fused with first. First 
article forms a very strong trunk bearing the rest of the relatively 
small antennula. First article as long as the following three com- 
bined, and also as long as the furcal branches. Sensory setae on the 
third and sixth articles, like Parastenocaris bidens Noodt. The three 
bristles, situated at the inside of the first article, are very character- 
istic. A.2 with relatively great allobase, much smaller Enp. and 
6 ot 
IMde c i 1 
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IPod 
IP59 
IF 
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EA iFud O- Ox IP4.6 (Benp.+1"art.exp) 
Ficure 1.—Parastenocaris brasilibathynellae, new species. 
very vestigial Exp. bearing a small bristle; sometimes the Exp. cannot 
be found in spite of all care during preparation. 
P.1 Exp. 3-jointed, Enp. 2-jointed, with two bristles of different 
lengths. Enp. a little longer than Exp. Length of second article of 
Enp. about half that of first, with small distal inner marginal bristle. 
Exp. with three well-developed and two rudimentary bristles apically, 
second article without bristles. P.2—P.4 each with 1-jointed Enp., 
varying considerably in structure. Enp. P.2, with two terminal 
bristles, but only one on inner margin. Enp. P.3 lacking bristles. 
Enp. P.4 with one terminal and two smaller lateral bristles. Enp. 
P.4 about 8 times longer than wide, easily lost. P.5 spatuliform, about 
