18 Annelida Ghcetopoda 
of head, lateral, large; posterior pair a little smaller than 
the middle, back of and within the latter, but almost 
touchiug them ; all dark red. Median antenna, arising 
between median pair of eyes, is always very long, but 
varies, being from 5 to 8 times the width of the body. 
Lateral anteunee about two thirds as long as the median. 
Superior tentacular cirrus as long as median antenna ; 
inferior, length of lateral antennae. 
Palpi, portion projecting beyond the head slightly longer 
than the head. They are broad, flattened, inner two-thirds 
of uniform width, outer third with external margin curved 
inward, internal margin straight, end bluntly rounded. 
They are free and diverge for their outer two-thirds, 
united by a membrane along their posterior third. 
The dorsal cirri arise from short stout basal articles 
(or elevations of the body). Their length varies from 
four to eight times the width of the body. There is a 
strong tendency to alternation between the shorter and 
longer cirri. Anal cirri two, as long as the last 6 or 8 
segments taken together. The antennae, tentacular cirri, 
dorsal cirri and anal cirri are alike in form and structure. 
They are uniform in diameter from end to end, are not 
composed of distinct articles but are wrinkled, and some- 
times 80 regularly as to give the appearance of distinct 
annulation. All are covered with short stiff" hairs. 
Ventral cirri arise about half way out on feet. Anterior 
not projecting beyond the feet,but the posterior often reach- 
ing slightly beyond. They are delicate, conical. 
The oesophagus reaches to the 4th or 5th segment. Ante- 
rior end with a circle of small, flattened, triangular papillae ; 
one stout conical tooth. The stomach is about the same 
length as the oesophagus, reaching to the 9th or 10th seg- 
ment. Back of the stomach, a pair of lateral glands. 
The feet are uniramous, conical, bilabiate, in length 
equal to the width of the body. The setae (f. 42) are 
