290 



FRED. V. THEOBALD. 



markings as figured) covered with white farinose matter. Abdomen showing one 

 large median black area, a dark line between the cornicles and a dark median line. 

 Fore femora and tibiae ochreous ; tarsi black ; mid and hind femora black ; tibiae 

 ochreous, with black apices ; tarsi black ; a few short hairs on femora and tibiae ; 

 coxae dark. Cornicles short ; conical to cylindrical ; black ; from one- third to nearly 

 half the length of the cauda. Cauda black, bluntly acuminate, spinose. Anal plate 

 black. Length, 1*5-1'8 mm. 



Fig. 13. Hyalopterus insignis, sp. n., apterous $, 

 showing dark areas; greatly enlarged (F. C. W.). 



These specimens were found in January. Colonies found in June had the brown 

 colouring not so dark, but some so dark as to appear black to the naked eye. The 

 cauda was also noticed to be of the same colour as the body, not black. The extent 

 and shape of the naked areas (i.e., devoid of mealy secretions) are slightly variable, 

 but all exhibit the large area in the median region of the abdomen, and in some the 

 dark brown between the cornicles surrounds their base. 



Alate viviparous female. — Dusky rich brown, covered with a greyish white 

 farinose secretion. Eyes red. Antennae with first segment dark ; second pale ; 

 third pale at base, its apex and other segments dusky. Femora all dark ; tibiae 

 yellowish, apex of second and third pairs dark ; tarsi dark. Cornicles and cauda 

 dark. Wing insertions yellowish ; costa, cubitus, stigma and other veins dark. 



The above is the general appearance of the January brood. 



