510 MR. G. S. BRADY ON BRITISH MARINE MITEs, [Apr. 6, 
The foregoing description (though not copied verbatim) comprises 
all. the more important particulars noted by Mr. Gosse; and, allow- 
ing considerable margin for individual variation, it applies perfectly 
well to such examples of the species as have come under my notice. 
Mr. Gosse found it not uncommon among seaweeds from low-water 
mark at Weymouth; Mr. Hodge dredged it in a depth of 20 
fathoms off the Durham coast ; I have myself taken it abundantly 
in pools of brackish water at the side of the Burn, Seaton Sluice, 
Northumberland, and have also found it in great numbers in almost 
all dredgings from the coasts of Durham and Yorkshire, as well as 
in the Frith of Clyde. 
It is with no little regret that I feel quite unable to draw any 
specific distinction between the forms described by my old friend 
Mr. Hodge (H. granulatus and H. oculatus) and the prior species 
H. rhodostigma, Gosse. H. oculatus is, I think, without doubt 
only the young ; and, excepting some trivial distinction of surface- 
markings, I cannot find out on what Mr. Hodge relied to distinguish 
his supposed species. 
Haacarvus CTENOPUS, Gosse, loc. cit. pl. 3. figs. 6-10. 
Body smooth, granulated, divided below only; length .J; of an 
inch ; colour variable, dark red or yellowish brown, often with a 
white line down the centre; nearly oval, pointed in front, excavated 
at the insertions of the legs; transversely sulcate beneath, opposite 
the origin of the third pair of legs. The rostrum is more attenu- 
ated than in H. rhodostigma; but the palpi are stouter, the last 
joint being a short hook, and both it and the preceding joint bear a 
small spine upon the inner margin. The legs are of nearly equal 
length ; thighs remote (laterally), those of the first two pairs and 
last two pairs of each side respectively originating close together ; 
the joints diminish gradually in length and width to the last, which 
bears two falcate claws: each of these has an accessory piece near 
the extremity of the convex margin, and is strongly pectinated 
along the conave.edge. Eyes two, large, situated near the base of 
the second pair of legs, and one much smaller near the base of the 
bulb of the rostrum. 
The feet of the first pair are often armed on the middle of the inner 
edge of the third, fourth, and fifth joints (or one or more of them) 
with a single stout spine ; but this is very variable, as also is the 
length and strength of the setiferous armature in general. 
Mr. Gosse described this species from one specimen found in 
company with the foregoing. It seems, however, to be of common 
occurrence, and generally distributed round the British coast. I 
have taken it on weeds between tide-marks and a little below low- 
water mark at Cullercoats (Northumberland), Westport and Bir- 
terbuy Bays (Ireland), Little Cumbrae (Frith of Clyde), Isles of Aran 
(Galway Bay), and amongst the Scilly Islands; Mr. Robertson and 
myself have also dredged it in depths of 7-29 fathoms off Portin- 
eross (Ayrshire), in 20-35 fathoms off Red Cliff, Yorkshire, and 
in 10-12 fathoms off the Scilly Islands. Mr. Norman says it is 
