A SYNOPSIS OF AUSTKALIAN ACARINA — RAIXBOW. 163 



Halacarus (Copidognathus) lamellosus, Lohin. 



Halacarus (Copidognathus) lamellosus^ Lohm., Ergeb. Planlcton 

 Exped., ii., 1893, p. 79, pi. vi., f. 1-9, pi. vii., f. 1, 4. 



Hosts. — Algae and stationary animals. 



Hah. — Pacific Ocean, Sydney ; Atlantic Ocean, Bermudas and 

 mouth of the Amazon. 



Halacarus (Copidognathus) pulciier, Lohm. 



Halacarus (Copido(jiiathus) pidchfii', Lohm., Ergeb. Plankton 

 Exped., ii., 1893, p. 77, pi. v., f. 1-8, text fig. 7. 



Host. — Alga?. 



Hah. — Pacific Ocean, Sydney ; Atlantic Ocean, Bermudas and 

 Ascension. 



Super-family IXODOIDEA. 



The Ixodoidea embrace by far the best known of all the 

 ^Vcarids, and are popularly termed ticks. They form a 

 perfectly natural group, the members of which may be easily 

 known by their general appearance and size, for none are so smaU 

 that they may not be seen by the naked eye. All are parasitic, 

 their hosts including sometimes man, various mammals, birds and 

 reptiles. Their integument is coriaceous ; the females are much 

 larger than the males, and their bodies capable of considerable 

 distension. Before distension they are somewhat triangular in 

 outline, rather flat, with prominent, slender legs, and the bealv- 

 like rostrum in front. Of our Australian tick acquaintances some 

 are indigenous, and some introduced — the latter which includes 

 the Cattle Tick, Rhipicephahis anntdatus, Say., being by far the 

 most serious. 



Family ARGASID^ 



Genus Argas, Latr 



Argas reflexus, Fah. 



Argas reflexus, Fab., Ent. Syst., iv., 1794, p. 426. 



Acartis reflexus, Fab., loc. cit. 



Argas reflexus, Latr., Precis des Car. gen. des Ins., 1796, p. 178, 



an V. 

 Rhynchoprion columhce, Mem. Apterologique Strasbourg, 180-1, 



p. 69. 



