102 
“TERRA NOVA’’ EXPEDITION. 
^ / 7 J' 2.°! . 
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organism or other floating object. The surface of its body is not hairy, but this may 
l»e due to immaturity, or the hairs may have been rubbed off. There are traces of 
longish hairs on the leys. 
o o 
One specimen, Station 109. 
Family MAIIDAE. 
Sub-family INACHINAE. 
Genus ECHINOMAIA, n. gen. 
Two male specimens, dredged in 100 fathoms north of New Zealand, belong to a 
species new to science, related to those of Cyrtomaia and Platymaia, but differing from 
each of them in points which appear important enough to demand the institution of a 
new genus for its reception. This may be diagnosed as follows :— 
Carapace subpyriform, as broad as long, with well-marked and somewhat swollen 
regions, naked, porcellanous, sprinkled irregularly with granules of various sizes, and 
bearing also large and small, blunt spines. Sternum and abdomen also sprinkled with 
granules, among which small, sharp spines are regularly arranged. Abdomen of male 
seven-jointed. Rostrum three-toothed ; its middle tooth a spout-like outgrowth of the 
interantennulary septum directed obliquely downwards; its other two teeth sharp, 
hooked, and standing erect on the hood-like antennulary fossettes. Eye-hood 
prominent. No pre- or supra-oeular, but a strong postocular spine, not hollowed to 
receive the eye. Epistome broader than long, concave, lozenge-shaped. Edges of 
mouth-frame projecting strongly, and rising at each outer angle into a lobe. Eyestalks 
long ; cornea somewhat ventral, bearing a papilla at the end and [2] others on the 
upper side. Basal joint of antenna of moderate width, reaching fore edge of eye-hoocl, 
not fused with surrounding structures, but firmly fixed ; its ventral side flat, bearing at 
end two jagged lobes; last two joints of stalk spreading on their outer sides each into 
a large, leaf-like flange (flagella wanting in both specimens]. Third maxilliped 
subpediform, merognathite being narrower than ischiognathite and palp strong; 
exognathite well developed and only its flagellum hidden. Legs long, slender, 
sul(cylindrical, with compressed end-joints; first two bearing many sharp spines, fourth 
smooth [fifth wanting in both specimens]. Chelipeds shorter than walking legs, 
stouter, though still slender, and more spiny. Hands narrow, subprismatic, with 
fingers bent somewhat downwards on palm. 
In the shape of the rostrum and the compression of the last joint of the walking 
legs, Eeliinomcda resembles Platymaia. The profile of its carapace is much like that of 
P. turhynei, Stebb., 1902. In regard to the eyes, the spines of the carapace, and the 
shape of the hands, it is more like Cyrtomaia. In the stalk of its antenna it differs 
considerably from both genera, Echinoplax appears to lie a related genus, and so 
perhaps is Macrocheira. It would be interesting to know the habits of this remarkable 
group of crabs, but on account of their deep-water habitat little more than conjecture 
