688 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.49. 



UDEOPSYLLA NIGRA Scudder. 



Udeopsylla nigra Scudder, Can. Nat. and Geol., vol. 7, 1862, p. 284. 

 Ceuthophilus niger Scudder, Boat. Joiirn. Nat. Hist., vol. 3, 1862, p. 437. 

 Daihinia gigantea Bruner, Bull. Washb. Coll., vol. 1, 1885, p. 127. 

 Ceuthophilus ater Scudder, Proc. Davenp. Acad. Sci., vol. 9, 1902, p. 57. 



This form is distinguished by the general black color. The blackish 

 color of UdeojJsylla gigantea Bruner, originally described in the genus 

 Daihinia, indicates that it should be placed here and Ceuthophilus 

 ater Scudder, as determined from a study of type material, is but a 

 nymph of this insect. Ater is nothing but a stiU younger and darker 

 specimen than Ceuthophilus politus, placed above in the synonymy 

 under the typical form robusta. 



Ceuthophilus niger Scudder is a synonym of Udeopsylla nigra and 

 was described in November, six months later than U. nigra. 



UDEOPSYLLA DEVIUS Scudder. 



Ceuthophilus devius Scudder, Proc. Amer. Acad. Arts Sci., vol. 30, 1894, pp. 

 30, 99. 



The type of this species has been examined and found to be a true 

 Vdeopaylla and separable from the typical form only by the almost 

 uniform hght yellowish brown color. It is therefore here transferred 

 to this genus and designated a color variety of rohusta. 



Genus HEMIUDEOPSYLLA Saussure and Pictet. 



Hcmiudeopsylla Saussure and Pictet, Biol. Cent. Amer., Orth., vol. 1, 1897, 

 p. 300. 



This genus seems very closely aUied to, if not identical with, 

 Ceuthophilus. The type-specimen of the genotypic species, H. genic- 

 ularis Saussure and Pictet, a single male with the posterior tibiae 

 missing, was seen in 1913 at a time when more than a casual glance 

 was impossible, and a note written at that time states that it looks 

 like a Ceuthophilus with the hind femora finely serrated beneath. This 

 same note states that the type material of H.forreriana Saussure and 

 Pictet, consists of a small female and a minute legless male, probably 

 also a Ceuthophilus. 



Two species of this genus have been recorded from the region cov- 

 ered by the present paper, H. platyceps Saussure and Pictet and a 

 species named and recorded by Saussure and Pictet as Hemiudeop- 

 sijlla californiana Scudder, under the impression that it was the 

 insect described under that specific name by Scudder in the genus 

 Ceuthophilus. But, as pointed out by Scudder,* their description 

 does not at aU fit this species. From the structure of the vertex as 

 described by Saussure and Pictet it seems probable that the specimen 



1 Canadian Entomologist, vol. 31, 1899, p. 121. 



