34 U.S. NATIONAL MUSEUM BULLETIN 248 posthumous 



There is a slight difference among species in the spines at the tip of 

 tibia 3 in size and position, especially in first spine above the three terminal 

 ones and in the second above the three. 



Spines on tibia 2 are similar in number to those on tibia 3, but the 

 upper two singles are shorter and thicker in the second tibia. 



The tibial spines may possibly be useful in separating species or sub- 

 species, but a much larger number of specimens would be necessary for 

 study. 



It is worthy of note that the tibial spines in Desumenopon are very similar 

 to those of the species of Menacanthus, parasitic on the Woodpeckers 

 (Picidae). 



Desumenopon praegracilis (Carriker) 



Figures iii: 1,5,9 



Amyrsidea praegracilis praegracilis Carriker, 1950, Rev. Acad. Colombiana Cienc, 

 vol. 7, p. 507, figs. 62-65. Host: Odontophorus gujanensis polionotus Osgood and 

 Conover. 



The original publication gives a full description and several figures. 

 This paper gives additional figures and more complete measurements. 



Desumenopon gujanensis gujanensis (Carriker) 



Figures hi: 3, 7, II 



Amyrsidea praegracilis gujanensis Carriker, 1950, Rev. Acad. Colombiana Cienc, 

 vol. 7, p. 509, figs. 66-68. Host: Odontophorus g. gujanensis (Gmelin). 



Described and figured in original publication, but additional figures and 

 measurements are presented in this paper. 



Desumenopon gujanensis cumhrensis (Carriker) 



Figures iii:2,6,10 



Amyrsidea praegracilis cumbrensis Carriker, 1950, Rev. Acad. Colombiana Cienc, 

 vol. 7, p. 509, figs. 69, 70. Host: Odontophorus columbianus (Gould). 



Additional details are given in the key to species, figures, and table of 

 measurements. 



Desumenopon hyperythrus hyperythrus (Carriker) 



Figures iii:4,8,12 



Desumenopon hyperythrus Carriker, 1954, Nov. Colombianas, vol. 1, p. 5, pi. I, fig. 5, 

 pi. II, figs. 2-6. Host: Odontophorus hyperythrus Gould. 



The above cited publication gives a full description of the genus and 

 for Cracimenopon. Additional details are given in the key to species, figures, 

 and table of measurements. 



