APPENDIX. 539 



Subgenus Goniodes, Nitzsch. 



9. G. chelicornis, Nitzsch, 



Lyon. pi. 4. f. 7. 

 Found on the Tetrao saliceti. Long. xV> lat. abdom. 



£5_ 



poll. 



Genus Liotheum, Nitzsch. 



(Pedicidus, Linn. Fabr. Ricmus, Degeer, Latrielle. 

 NirmiiS) Hermann, Olfers, Leach.) 



Subgenus Colpocephalum, Nitzsch. 



10. C. subaequale, Nitzsch. 



Lyon. pi. 4. fig. 5. 

 Found on the Corvus corax. Long. 2 |^ poll. 



Subgenus Physostomum, Nitzsch. 



11. P. sulphureum, Nitzsch? Pediculus dolicocephalus, 



Scopoli ? 



Albus : toto corpore glabro : capite oblongo, apice 

 rotundato : abdomine elliptico, subtus marginato ; ma- 

 culis frontalibus, vittaque dorsali sanguineis. Long. T V(T 

 poll. 



Found on the Snow-bird. 



12. P. marginatum (n.s.), Nob. 



Albidus: capite oblongo, fusco maculato, apice ob- 

 tuso: thorace abdomineque marginatis, lineaque fusca 

 circumdatis : pedibus albidis. Long. T ! o 4 o poll. 



Except in size and colour, this species very much 

 resembles Degeer 's Ricin du Pin c on. 



