4 U.S. NATIONAL MUSEUM BULLETIN 248 posthumous 



12. Frons strongly conical, with slightly convex sides; second and third 



coxae small, elongated oval M. pitius, new species 



Frons flatly conical, with sides nearly straight; third coxae smaller 

 than second, and slender (see fig.) . . . . M. bruneri, new species 



13. Frons circular; ocular slit prominent; a short, slender setae on sides 



of prothorax instead of small spine 14 



Frons not circular, but somewhat conical, with rather stongly convex 

 sides; trochanter apparently absent on all legs 15 



14. Head small (.314 X -586) . . M. ceophloeus ceophloeus, new species 

 Head larger (.326 X -63 occipital length). 



M. ceophloeus chocoanus, new subspecies 



15. Ocular slit almost entirely uncovered; pleurites well developed, but 



sternal; metasternum prominent, with marginal and surface 



setae 16 



Ocular slit partially covered; pleiirites not visible; numerous short 

 setae between second and third coxae; third coxae long and slender, 

 with sides straight; cf genitalia distinctive. 



M. quercus, new species 



16. Pleurites narrow (widest .045); outer ends of sternites not visible, 



apparently fused with pleurites ; segment IX of 9 shorter and wider 

 (.175 X '48); second and third coxae equal in size and shape. 



M. pici pici (Denny) 

 Pleurites well developed, the widest being .09; outer ends of sternites 

 ni-Vni visible and separated from pleurites; second coxae smaller 

 than third ; segment IX of 9 longer and narrower (.45 X -22) . 



M. pici dryobates (Eichler) 



Genus Menacanthus Neumann 



Menacanthus Neumann, 1912, Arch. Parasit., vol. 15, no. 3, p. 353. Type species: 



Menopon robustum Kellogg. 

 Neumannia Uchida (nee Trouessast, 1888), 1926, Journ. Coll. Agric. Univ. Tokyo, 



vol. 9, p. 27. Type species: Neumannia okadai Uchida. 

 Eomenacanthus Uchida, 1926, Journ. Coll. Agric. Univ. Tokyo, vol. 9, p. 30. Type 



species: Menopon biseriatum Piaget. 

 Picacanthus Eichler, 1953, Beitr. Vogelkunde, vol. 3, nos. 3-4, p. 180. Type species: 



Picacanthus dryobates Eichler. 



A very large genus found on many families of birds from Passeriformes 

 to Galliformes. In the present article only the parasites on the wood- 

 peckers (Picidae) will be considered. 



