1875. ] MR. G. S. BRADY ON BRITISH MARINE MITES. 309 
tus, Latreille, as figured by Dr. Johnson in his monograph of the 
Acarides of Berwickshire*, that I cannot doubt the propriety of re- 
ferring it to the same genus. 
Genus Hanaracuneg, Allman. 
Halarachne halicheri, Allman, Ann. & Mag. Nat. Hist. vol. xx. 
1847, p. 47. 
Parasitic in the posterior nares of a Seal (Halicherus gryphus). 
Fam. Or1BATID&. 
Genus Haxacarus, Gosse. 
Havacarus r#opostTiemA, Gosse, Ann. & Mag. Nat. Hist. 
ser. 2, vol. xvi. (1855), pl. 3. figs. 1-5. 
Halacarus granulatus, Hodge, Trans. Tyneside Nat. F. C. vol. v. 
p. 299, pl. 16. figs. 4, 5. 
Halacarus oculatus, Hodge, Trans. Tyneside Nat. F. C. vol. v. 
p- 300, pl. 16. figs. 8, 9. 
“Body divided above and below; claw of palpus slender, little 
curved ; legs nearly equal; thighs of first pair ventricose ; claws all 
simple; whole surface minutely punctured. 
“Length 7 of an inch from anus to tip of rostrum: colour pel- 
lucid whitish, stained with pale red on the anterior half; above and 
below studded with punctures, which under a high power take the 
form of rosettes or the spots on a panther’s coat; the punctures 
are conspicuous on the first thighs, but are searcely visible on the 
other limbs; the haunches are moderately distant at their origin, 
springing from the margin of the body, the shield being notched to 
give them exit; the third joint of the legs is the largest, much 
swollen in the first pair; the fifth is also large; and the sixth is 
long but slender, tapering abruptly from the middle; the claws are 
simple hooks, much curved, neither pectinated nor tipped with an 
accessory piece, but the joint from which they spring is tipped with 
two nearly parallel styles: the legs are equal in length. 
“The shield of the body above is subtruncate in front, but projects 
im a small median point, long-oval, with a transverse sulcus at the 
origin of the second legs. Below, the body has two transverse 
divisions—one at the origin of the first legs, another at the origin of 
the third. 
“The rostrum forms a thick bulb, tapering to a point, from which, 
during life, I observed two apparently soft, flexible, filiform, diver- 
gent organs (mandibles?) protruded and retracted. Palpus of four 
joints, of which the second is by far the largest ; terminal joint 
slightly curved, pointed, and furnished near the base with two 
strong bristles on the inner side and one on the outer. All the 
joints of the legs are armed with a few short bristles. The vulva 
occupies a large oval area at the hind part of the venter; and the 
anus is terminal.” 
* Transactions of the Berwickshire Naturalists’ Field-Club, vols. ii. & iii, 
