308 
THE VOYAGE OF H.M.S. CHALLENGER. 
Ebalia ( Phlyxia ) intermedia, n. sp. (PL XXV. fig. 2). 
I thus very doubtfully designate some small specimens (perhaps not fully grown) 
which are intermediate in their distinctive characters between Plilyxia crassipes and 
Phlyxia orbicularis. They are distinguished from the former species by the absence of 
tubercles from the dorsal surface of the carapace (except sometimes an obscure tubercle 
in front of the median posterior spine, which is more elongated than in Plilyxia crassipes) 
and from Phlyxia orbicularis by the more convex and less orbiculate carapace, more 
prominent front, and more slender chelipedes. It may be a variety of the latter species; 
it can hardly, I think, be identified with Bellidilia serratocostis, Kinahan, which is very 
briefly diagnosed. 
Carapace moderately convex, longer than broad, granulated but not tuberculated on 
the dorsal surface, which is somewhat uneven, with a slight protuberance on the intestinal 
region, in front of the posterior spine, and with three or four small tubercles or granules 
on the lateral margins, the most prominent being one placed in the middle of the postero- 
lateral margin ; front rather prominent and quadridentated ; the median posterior spine 
of the carapace is prominent and acute, and below it the posterior margin is straight, 
with the lateral angles not prolonged as lateral spines. There is a small tubercle on each 
pterygostomian region. The sternum and post-abdomen are finely granulated; the latter 
is smooth, with all of the segments (except the last) coalescent in the male ; in the 
(young ?) female one or two of the basal segments are partially distinct ; the terminal 
segment is narrow and rounded at the distal extremity. The maxillipedes are finely 
granulated ; the exognath has a nearly straight outer margin, and its distal extremity 
nearly attains the acute apex of the merus of the endognath. The chelipedes are 
moderately elongated and slender ; merus slightly compressed (but not carinated) and 
granulated, the granules of the posterior surface most prominent ; wrist and palm 
granulated and compressed ; the latter has on its exterior margin a small indentation at 
base close to its articulation with the wrist ; fingers thin, compressed, as long as or 
slightly longer than the palm, and obscurely denticulated on them inner margins near to 
the apices, which are incurved ; ambulatory legs, of which only one or two detached, 
remain very slender, with the dactyli styliform and considerably longer than the 
penultimate joints. Colour, in spirit, light yellowish-brown. The most perfect specimen, 
which is, I think, an immature female, has the following dimensions : — 
?• 
Length of carapace, nearly 
Breadth of carapace, 
Length of a chelipede, about 
Length of first ambulatory leg, nearly 
Lines. Millims. 
4 8 
H 7-5 
6 13 
5 10-5 
Four small specimens, all more or less imperfect, were dredged in 33 fathoms, off the 
entrance to Port Philip (Station 161). 
