280 



!cf tibia 2 vvith loug spur or other 

 apophysis directed distally . . P. crassipes (,L.-). 

 cf tibia 2 otherwise 18. 



I (f feiuur 2 with 2 little tubercles. P. seplentrionalis Oudms. 

 18 ( rf femur 2 with moderate spathulate 



( apophysis P. meridionalis (Berl.). 



14. Hydrogamasus salinus Lab. 



Synonyms : 



1851. Gamasus salinus Lab. in Auu. Soc. Ent. Fr. p. 297, 

 tab. 9, fig. 1. 



1851. Gamasus maritimus Lab. iu Arm. Soc. Ent. Fr. p. 298, 

 tab. 9, fig. 2. 



1877. Sejus salinus Murray, Econ. Entoni., Apt., p. 166. 



1877. Sejus maritimus Murray, Econ. Eutom., Apt., p. 166, fig. . 



1881. Gamasus litoralis G. et R. Can. in Att. R. Ist. Ven. 

 Sc. Lett. Art, vol. 7, p. 2, t. 8, fig. 2a, 2b, 2 c. 



1882. Gdmasus littoralis G. et R. Can. I Gainasi italiani, p. 46, 

 t. 5, fig. 2, 2a, 26, 2c. 



1885. Gamasus littoralis Can. Prosp. Acarof. Ital. I, p. 72. 



1890. Gamasus littoralis Mon. in Rev. Biol. Nord. Fr. p. 11. 



1892. Hydrogamasus littoralis Berl. Ac. Myr. Scorp. Ital. 68, 6. 



Laboulbène describes and figures under the name of Gamasus 

 salinus au Acarus which proves to be the nyinpha of the animal 

 called afterwards Gamasus litoralis G. et R. Can. We have ouly 

 to compare bis description and figure with those of Burlesk to 

 be at once convinced of my assertion. YVny Berlese has he not 

 drawu our attention on this. striking fact? Why has he not at 

 all mentioned Gamasus salinus of Laboulbène in his work entitled 

 Ordo Mesostigmataf 



In the same journal Laboulbène describes and draws another 

 Acarus under the name of Gamasus maritimus, which cannot be 

 but the adult female of the same animal. Ouly compare Laboul- 

 bène's fig. 2 with Berlese's fig. 1. And yet Berlese says in his 

 Ordo Mesostigmata, p. 05 » Gamasus maritimus Lab. videtur esse 



