1922] On some Trophobiotic Coccidce from British Guiana 137 



the stems of Cecropia angulata I. W. Bailey. The ants belonged 

 to a species of Azteca not yet identified." (Paratypes). 



Ko number. "Kartabo, B. G. August 1920. In stems of 

 Cecropia with Azetca sp. (Paratypes). 



The types are in the U. S. National Collection of Coccidse. 



The prohferation of the anal ring setae in this species is a 

 marked digression from the normal condition in the genus 

 Pseudococcus and might be regarded as of sufficient importance 

 to justify the separation of the species from that genus. How- 

 ever, most, if not all, of the other structural characters of the 

 species appear to be characteristic of Pseudococcus and it has 

 therefore been placed in that genus. 



Genus Farinococcus, gen. nov. 



A member of the group of which Pseudococcus is the typical 

 genus; body oval, antennae 8-segmented, legs normal, without 

 tiny pores, claw without denticle, beak short triangular, 2- 

 segmented, spiracles stout with large opening and numerous 

 disk pores near mouth, two pairs of dorsal ostioles, cerarii verj^ 

 large, composed of man}^ lanceolate spines, setae and pores and 

 joined into a continuous band anteriorly; anal lobes not de- 

 veloped, with ventral chitinized thickening and apical seta, anal 

 ring normal, with pores and six setse, derm with triangular pores 

 dorsally and ventrally and many multilocular disk pores ven- 

 trally in genital region, no other pore types, derm with slender 

 setae dorsally and ventrally, with a single median ventral ci- 

 catrix. Genotype. — Farinoccusus multispinosus, sp. nov. 



This genus diverges from the normal Pseudococcine type 

 most conspicuously in the marked development of the cerarii 

 and the great increase in the number of ventral disk pores, and, 

 to some extent, in the enlargement of the spiracles. 



Farinococcus multispinosus sp. nov. 



Occuring in cavities in the stems of the host, attended by ants. 



Adult female. — Preserved in liquid, so nothing regarding the 



normal external appearance can be given; color of alcoholic 



