520 



AUTHENTIC HISTORY 



ecclesiasticus 



ornatus 



bicolor 



varigatus 



bilineatus. 

 Angelena. 



l^lumbea 



iiaevia 

 Theridium. 



vulgaris 



boreale 



lineatum 

 Pholcus. 



several species. 

 Tegenakia. 



punctata 

 Epeira. 



riparia 



obesa 



peiisylvauicus 



vulgaris 



caudata 



niilitaris 



spiiiea 



rugosa 

 aud several others. 

 Ltniphia. 



communis 



antumnalis 



pumila 

 Argyroneta. 



several species. 

 Stnemostka. 



fomica 



Epiblemum. 

 palmaruni 

 and others. 



TR AC HE ARIA. 



PSEUDO-SCORPIOXID.E. 



Chelifer. 

 cancroidc? Lin. 

 and other species. 



PHALANGID^. 

 Phalangia. 



several species. 



AC ARID ^. 

 Tyrolyphus. 



ribis Fch. 

 Heteropus. 



ventircosus Fch. 

 Oribata. 



quadricolis Feh. 

 Tkombidima. 



several species. 

 Acarus. (Mites.) 

 domesticus De G. 

 scabies Fab. 

 sacchariuum 

 farina 

 telluris 

 Ixodes (Ticks.) 



several sijecies. 

 Gamasus. (on Beetles.) 



several species. 

 Hydrachna. 



several species. 



The foregoing catalogue of Arachnids is necessarily very incomplete, and therefore, 

 also very imperfect; its compilation being from very scant and disconnected materials, 

 and rather from recollections, based upon meagre discriptions, than from specimens 

 before me of what the county of Lancaster contains. It may however serve as the 

 basis for a more perfect and extended list hereafter, when the county is more fully ex- 

 j)lored and the subjects it contains are better understood. The authorities, except in a 

 very few instances, are not given, simply because they are not certainly known, but it 

 is presumed that most of them are due to Prof Heutz and Dr. Harris. 



CLASS CRUSTACEA. 



Lancaster county being an inland district and its waters all fresh, it therefore con- 

 tains but few individuals belonging to this class of animals, and those few but little 

 understood. 



ORDER DECAPODA. 



Family — Macroura. 



ASTACUS. 



bartonii Bosc. (craw-fish.) 



