114 Mr. A. Hem pel on Brazilian Coccidse. 



are covered with small and large round spinnerets and hairs 

 with tubercular bases. 



Female (second stage). — Test elongate, elliptical, the ends 

 nearly acuminate. It is rough like the adult, but not so 

 brittle. The roughness is due to the fact that the test is 

 secreted and formed from small globules of wax. Denuded 

 of the test it is oval in form^ buff in colour, with eight or 

 nine deep transverse furrows on the dorsum. The dorsum 

 also bears near the lateral margin the seven pairs of spiracles, 

 which open into the furrows. The external openings are 

 surrounded by a small quantity of white powdei*y secretion, 

 and are readily seen with a lens. Under the insect there is 

 a slight cushion of white powdery secretion. 



Boiled in a solution of KOH it makes the liquid turbid, 

 giving it a light yellow colour. The antennae are represented 

 by short thick tubercles, with a terminal brush of stiff hairs. 

 Legs are represented by thick tubercles, with minute claws. 

 Kostrum is large, extending from the antennae beyond the 

 first pair of legs. Mentum large, dimerous. Rostral loop 

 very long, usually coiled. Two small oval eyes are situated 

 just in front of the antennae. Collar on the intestine, and 

 spines and spinnerets the same as in the adult. The abdomen 

 also bears on the ventral surface masses of minute hairs. 



Hah. Pocjos de Caldas, State of Minas Geraes. Very 

 abundant on limbs and trunk of Schinus sp., a kind of matte. 



Frequently the tests of 2-6 individuals coalesce, forming 

 one mass. The females of the second stage usually secrete 

 from the caudal end a stiff tube of white wax, which usually 

 has a small drop of clear liquid on the end. 1 had at first 

 thought this insect might be a Kermes, but on studying it 

 closely I found that a new genus had to be erected for it. 

 Prof. T. D. A. Cockerell, to whom I sent specimens, also 

 thought that it belonged to a new genus. 



Genus Stigmacoccus, Hempel. 



Adult female forming a more or less spherical test, with a 

 large aperture on the apex. Antennaj 7- or 8-jointed. Anal 

 ring hairless. Abdomen with eight pairs of spiracles. 



Type Stigmacoccus asper, Hempel. 



Stigmacoccus asper^ Hempel. 



Adult female test large, chrome-yellow, the outside 

 blackened by a fungus and very rough ; inside smooth and 

 shiny. The shape is more or less spherical, slightly com- 

 pressed laterally, with a round or elongate hole on the apex. 



