OF WASHINGTON. 301 



in such numbers that I am now inclined to believe that it is car 

 nivorous and preys especially upon the dipterous maggots in the 

 gopher dung. The larva of Onthophagus polyphemi has not 

 been definitely distinguished from some of the smaller specimens 

 of the scarabaeid larvae collected, which may be confused with 

 those of Copris gopheri. Several casual visitants have been 

 observed in the burrows, and it is noteworthy that the number is 

 so small. The list, appended, herewith includes a single speci 

 men of a black species of Philonthus, a common Saprinus found 

 on several occasions, and two species of Ptomophagus, both 

 common species of these small Silphidse, which are liable to oc 

 cur in deep pits and cellars or within the mouths of caves. The 

 whip- tailed scorpion , Thelyphonusgiganteus^^^^.\^ to be rather 

 more than a casual visitor to the gopher holes, and is probably 

 attracted thither by the abundance of the crickets ( Ceuthophihis). 

 A list of the gopher guests which is given here below includes 

 as regular inhabitants of the burrows 19 articulates and one ver 

 tebrate, with four coleoptera and one arachnid in additional con 

 sidered a$ visitors of the domicile only. The full fauna, there 

 fore, comprises 24 parasites and messmates of the tortoise. 



LIST OF GOPHER .INSECTS. OCTOBER, 1895. 



COLEOPTERA. 



(1) Homalota sp. indet. 



(2) Philonthus gopheri and larva. 



(3) Acrostilicus hospes n. gen., n. sp. and larva. 



(4) Trichopteryx sp. indet. , 



(5) Chelyoxenus xerobatis and larva. 



(6) Copris gopheri and larva. 



(7) Onthophagus polyphemi larva ( ?) 



(8) Aphodius troglodytes and larva. 



DIPTERA. 



(9) Hylemyia n. sp. {Anthomyiidce) and larva (larger fly). 

 (10) Limosina sp. (Borboridcz) and larva (smaller fly). 



LEPIDOPTERA. 



(n) Epizeuxts n. sp. and larva. 



ORTHOPTERA. 



(12) Ceuthophihis latibuli Scud. 



ARACHNIDA. 



(13) Spiders uninvestigated, probably 2 species. 



(14) Phalangodes n. sp. 



(15) Chclanops affinis Banks. 



(16) Ornithodorus americanus Marx. 



(17) Amblyomma tuberculatum Marx. 



(18) Mites (Orobatid) on Copris. 



