PAPER IV CARRIKER ON MALLOPHAGA 41 



Fully described and figured in the original description. See table of 

 measurements and key to the species for additional data. 



Cracimenopon microspinum (Carriker) 



Figures iv:3,6 



Amyrsidea spicula microspina Carriker, 1950, Rev. Acad. Colombiana Cienc, vol. 7, 

 p. 507, fig. 59. Host: Ortalis r. ruficrissa Sclater and Salvin. 



No figures were given for this species in the original description, merely 

 the characters to distinguish it from A. s. spicula and A. s. garruli. It is 

 known only from the female. The key to the species, the table of measure- 

 ments, and the figures here given are sufficient for the recognition of the 

 species. 



Cracimenopon sixiola, new species 



FiGtJRES rv:21,22 



Amyrsidea spicula subspecies, Carriker, Rev. Acad. Colombiana Cienc, vol. 7, p. 507. 

 This species, represented by two males in poor condition, was not described in 

 the 1950 paper, but it was tentatively classified as a race of A. spicula. 



Holotype male from Ortalis garrula frantzii (Cabanis) collected by the 

 author at Rio Sixiola, Costa Rica, in 1903 (type in USNM). 



Diagnosis: The largest known species of this group, the male is 2.00 mm. 

 in length, while the next largest species is only 1.71. Head wide at temples 

 (0.67), with rather narrow frons (0.42). The body, exclusive of head, is 

 in a condition impossible to figure ; the movable sclerite of the genitalia is 

 missing but the genitalia are in perfect condition, as shown in the figure. 

 It is large with distinctive features, which, together with the shape and 

 size of the head, are sufficient for its recognition. See table of measure- 

 ments and key to the species for additional data. 



Cracimenopon mirae, new species 

 Figures rv:7,10 



Holotype female and 2 paratypes from Ortalis garrula mira Griscom 

 collected by the author at Unguia, Choco, Colombia, March 7, 1950 (type 

 in USNM). 



Diagnosis : May be distinguished by the broad head, with wide, circular 

 frons; deeply submarginal occipital nodi connecting carina and lateral 

 wings. First pair of coxae extend under the head and terminate at posterior 

 edge of prothorax. See key to species and table of measurements for ad- 

 ditional data. 



Cracimenopon caquetae, new species 



Figures iv: 8, 11,19,20 



Holotype female, allotype male, and 2 paratypes from Ortalis guttata 

 caquetae Chapman collected by the author at Puerto Venecia, Caqueta, 

 Colombia, June 16, 1952 (type in USNM). 



