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PROCEEDINGS OF THE NATIONAL MUSEUM 



most dependable, but I have not been able to examine a sufficient 

 number of specimens from the same host species to determine to 

 what extent the chaetotaxy may vary. 



Nevertheless, the setae present on the head, prothorax, and last 

 abdominal segment of species in other genera of Mallophaga are being 

 used extensively now as identifying characters for species and species 

 groups, so that it seems logical that they may be successfully used 

 in Furnaricola. 



UntU recently Xiphorhynchus picus has been placed always under 

 the genus Dendroplex, where I beUeve it should have remained. Both 

 in morphology and habitat, picus differs strongly from Xiphorhynchus 

 auct. whose species are strictly forest dwellers, while in Dendroplex 

 picus we have a species habitually found in semiarid open scrub, 

 composed largely of xerophytic vegetation, and they are often seen 

 out in the open on fenceposts. As further proof we have the very 

 great difference in the type of Mallophagan parasites which infest 

 them. 



Measurements of the types of F. lackrymosa and F. h. hirsuta are 

 as follows: 



Furnaricola hirsuta picirostris, new subspecies 



Figures 12, 19a 



Holotype female and allotype male adidts, from Xiphorhynchus 

 picus picirostris (Lafresnaye), collected by the author at El Conejo, 

 Sierra Perijd, Colombia, March 18, 1945 (Carriker type no. 791). 



Diagnosis: Resembles the nominate race in general appearance, but 

 in measurements, some are greater, some are less, and some are the 

 same. It is larger than hirsuta, especially the female, with longer 

 and wider head, but with frons the same width; prothorax same in 

 male, larger in female; pterothorax larger in both sexes; abdomen 

 longer and wider in male and much longer in female. 



Male genitalia differ in shape and length of paramera, those of 

 picirostris being much longer and much narrower basally. Measure- 

 ments follow next species. 



