TYCHEA SETUL0SA. 87 



very sliort, the joints being much more equal in 

 length. 



Taken in Ants' nests, at Beckenham, under tufts of 

 Poa, in November. 



Passerini gives for food the roots of Triticum vidgare, 

 Cynodon dactylon, Poa trivialis, Festuca duriuscula, fyc. 

 He thinks that possibly Coccus Zece-maidis, of Leon 

 Dufour, may be referred to this species ; and notes that 

 the presumed single claw may probably be due to a 

 mistaken diagnosis.* 



Tychea setulosa, Pass. Plate CXXVII, figs. 5 — 8. 

 Viviparous female. 



Inch. Millimetres. 



Size of body 0'075x 0-060 l-89xl'52. 



Length of antennas 0'020 0*50. 



Large, pearly white. Some are circular and domed. 

 Vertex flat, head broad. Antennae 5- jointed, with a 

 rounded button or nail. Third joint much the longest, 

 but there is a tendency to a constriction, which might 

 suggest an additional joint, and make Passerini' s 

 phrase " articulis subasquilongis " more apposite. The 

 whole insect is hirsute and tufted with setas, particu- 

 larly as to the head and antennas. Eyes are merely red 

 specks, and very minute. Legs short, the hinder pairs 

 hardly protrude beyond the body. Tarsi with two 

 claws which fold together so as often to appear but 

 siugle. Rostrum very variable in length. The tip 

 blackish. Cauda rounded. The younger or less 

 developed forms greatly differ in proportion, and 

 show only four antennal joints, with largely extended 

 rostra. Some specimens are fuscous on the head 

 and tail, and all are rather "mealy." 



The larger insects contained from five to seven 

 embryos. It is remarkable that the eyes and antennas 

 * Vide ' Aphididce Italics,' p. 82. 



