GAMASIDS. 



167 



CASE importance to them as v^e otherwise should have done. One 

 of M. Laboulbene's species (G. halophilus) is imperfect, the palpi 

 being wanting. It looks very like M. Hermann's Trombidium 

 celer, and it may prove a Trombidium when its whole structure 

 is known. In the meantime it has this amount of resemblance with 

 them, that when in life it is said to have been of a fine red colour. 



Mr. Brady, of Sunderland, has recently added the following 

 quasi-marine species to those above spoken of, which he has 

 described under the name of G. marinus. 



No. 13. i^EJ^'S MARINUS (Gamasus marinus, Brady, Proc. Zool. Soc. 

 Enlarged sketch of ditto, copied from Mr. Brady's figure. 



Found pretty commonly in crevices 



of magnesian limestone rocks, between 



tide marks near Sunderland ; Mr. Brady 



has also a specimen that was washed 



from among the roots of algae dredged 



off Cumbrae in the Frith of Clyde. It 



is very like, but distinct from, one of 



die species described by M. Laboul- 



bene, and both it and they are obviously 



a parallel case to the species of ^^pus, 



Trechus, Bembidium, and other beetles 



that have been found in similar places. 



[875). 13. 



Sejufi marinus. (Copied from Mr. 

 rady's figure.) Very minute. 



Sejus AURIS (Gamasus auris, Leidy, Pr. Ac. Phil., 1872). 



Professor Leidy describes a species under this name from the 

 ear of an ox. He gives a figure of the claw to prove that it is a 

 Gamasus, but no figure of the insect itself. A copy of his figure 

 of the claw will be found on page 157. 



Genus Halarachne {Allm.). 



Nos. Halarachne halich^ri {Alltn., Ann. Nat. Hist, 1847). — 14. Enlarged 

 '^^' ^^' figure of larva of ditto; 15. Enlarged figure of perfect insect. 



This is another claimant to the title of ocean mite, whose claim 



