of the Family Halacarida?. 173 



for a more complete bibliography to Dr. Lohmann's mono- 

 graph indicated below. 



In the following pages each bibliographic reference will be 

 indicated by its number placed in parentheses, after the name 

 of the author of the memoir cited. 



Besides the species already known, we shall give the 

 diagnoses of several new genera and species, derived not only 

 from the French coasts, but also from other regions of the 

 globe (Tierra del Fuego, New Zealand). 



Family Halacaridse, Murray, 1877. 



Char. Exclusively marine Acarina, destitute of tracheae, 

 with a distinct rostrum ; maxillary palpi free, fusiform, of 4 

 (rarely 3) joints, the first and third short, the second elon- 

 gated, the fourth, or terminal, pointed and styliform. Man- 

 dibles terminated by a straight or recurved claw, which 

 represents the immobile finger of the chelicera, the movable 

 one being atrophied. Hypostome formed by a more or less 

 elongate bivalve furrow, of which the two symmetrical parts 

 are soldered together at the base or throughout their length. 

 Three eyes, of which two are situated at the normal place 

 upon the cephalothorax, and the third, unpaired one, in front 

 upon the epistome. Integuments strengthened by more or less 

 extensive dorsal and ventral dermal plates, with the surface 

 smooth, grained, punctured, or sculptured. Legs lateral, well 

 developed, terminated by a double claw, which is generally 

 pectinate. 



3. Brady, G. S. " A review of the British Marine Mites, with descrip- 



tions of some new species " (Froc. Zool. Soc. 1875, p. 301, pi. 42). 



4. . " Notes on British Freshwater Mites " (ibid. 1877, p. 24, 



pi. 4). 



5. Muehay, A. " Economic Entomology : Aptera, 1877," pp. 205 et seqq. 



(a summary of the preceding papers, with figures). 



6. Chilton, 0. " Ou two Marine Mites (Halacaridas) " (Trans. New 



Zeal. Inst. vol. xv. 1883, with fig.). 



7. Teoitessart, E. "Note sur les Acariens marins recueillis par 



M. Giard au Laboratoire maritime de AYimereux" (CoinptesRendus, 

 5 Nov. 1888, p. 753 ; reproduced with some modifications in the 

 Bull. Bibl. Scient. de l'Ouest, Niort, 1888, no. 8). 



8. Lohmann, II. " Die Unterfamilie der Halacaridae (Murray) und die 



Meeresmilheu der Ostsee " (Zool. Jahrb. iv. 1889, p. 269, with 3 plates; 

 issued as a separate paper in December 1888). 



9. Trouessart, E. " Sur les Acariens marins des cotes de France, 2 e 



Note " (Comptes Rendus, 3 June, 1889, p. 1178). 



10. . " Diagnoses d'especes et genres nouveaux dAcariens marins 



des cotes de France " (Le Naturaliste, ] l e annee, 1889, pp. 162 & 

 181). 



Ann. & Mag. N. Hist. Ser. 6. Vol. v. 13 



