130 Carcinological Fauna of India. 
Family I. Homoutp2# restr. 
Carapace elongate-quadrangular, or ovoid, or urn-shaped, 
Terminal joint of the eyestalk (with the eye) either longer or 
shorter than the slender basal joint. Antennal flagella much longer 
than the carapace. 
External maxillipeds pediform or subpediform. 
The gill-plumes are 14 in number on either side, and there are 
epipodites to the chelipeds and first two pair of legs. 
Homola, Paromolopsis and Hypsophrys, vid. seq. 
Family Il. Larreiuiipar. 
Carapace elongate-quadrangular, or piriform. 
Basal joint of eye-stalk very much longer than the terminal joint. 
Antennal flagella not so long as the carapace. 
External maxillipeds sub-operculiform. 
The gill-plumes are 8 in number on either side and there are no 
epipodites to the chelipeds or legs. 
Latreillia and Latreillopsis, vid. seq. 
Tribe DROMIIDEA. 
Family HOMOLODROMIDA. 
ARAcHNODROMIA, Alcock, 
Arachnodromia, Alcock, Investigator Deep Sea Brachyura, p. 17. 
Carapace elongate-oblong bat somewhat broader behind than in 
front, deep, inflated, tomentose, its texture thin but well calcified: two 
creases break either lateral border, the posterior one being the more 
distinct and being continued to the cardiac region (=branchial groove), 
the anterior one, or true cervical groove, not. proceeding far on to the 
dorsum of the carapace. 
The front is horizontal, prominent, and deeply bifid. 
The antennule and eye of either side are completely retractile into 
a common deep fossa (just as in Dromia) which affords them complete 
protection. As in Dromia, the floor of this common antennular-orbital 
fossa is formed by a subocular (“antennal”) tooth in contact with the 
basal joint of the antenna, and, as in Dromia, the outer wall of the 
orbit is breached by a wide gap. The orbital portion of the fossa, 
which is loosely filled by the eyes, has the hollow for the eyes much 
deeper than the hollow for the eyestalk. The eyestalks are long and 
slender, the eyes small but perfectly formed and well pigmented. 
The two basal joints of the antenne, which are quite freely mov- 
able, largely fill the gap in the lower wall of the orbit, and lie in the 
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