108 



THE CANADIAN ENTOMOLOGIST 



Xysticus ontariensis, n. sp. 



Male 4 mm. long. First and second legs 9 mm. Cephalothorax dark brown, 

 showing a middle strips very indistinctly. The first and second legs have the 

 femur and patella dark brown, and the rest of the leg pale. The third and fourth 

 legs are spotted as usual but not very strongly marked. The abdomen has 



Fig. 16 



two irregular brown patches on the frojit half, and three or four transverse 

 stripes behind all with irregular outlines and variable colour. (Fig. 16, a.) 

 The male palpus has the tibia white. The palpal organ has the two processes 

 on the under side, simple hooks turned toward each other as in X. gulosus, 

 with which this species has been confused. (Fig. 16, b.) 



Cloyne, Ontario, A. B. Klugh; Wellesley, Massachusetts. 



NOTES ON COCCID^.— III. (HEMIPTERA).* 



BY G. F. FERRIS, STANFORD UNIVERSITY, CALIFORNIA, 

 Continued from Can. Ent., vol. 50, p. 332. 

 Genus Stigmacoccus Hempel. 

 1903. Fernald, Cat. Coccidce, p. 20. 



Monophleboid Coccidaein which the adult female possesses mouth-parts, 

 legs and antenna, the latter 7-8-segmented ; immature stages without legs and 

 with the antennae reduced to mere chitinized points, with an anal tube formed 

 by the chitinization of the posterior portion of the alimentary canal, this tube 

 terminating at its inner extremity in a series of tentacle-like processes. Abdo- 

 men in adult and penultimate stages with 8 pairs of spiracles. 

 Type of the genus, Stigmacoccus as per Hempel. 



Notes. — The original description of the type species was based upon the 

 adult alone and the immature stages have not been described. In general the 

 genus appears to be quite similar to Xylococais, but the very peculiar character 

 of the anal tube alone seems sufficient grounds for its separation. 



Whether the genus Peris so pneumon Newstead is a synonym of Stigmacoccus, 

 as Cockerell has indicated, is perhaps doubtful. 



Stigmacoccus asper Hempel. 

 Fig. 17. 

 Penultimate stage. Enclosed in a test, as described by Hempel for the 

 adult female. Body more or less spherical, with the anal opening high up on 

 the dorsum. Derm membranous throughout, except for a small, circular. 



May, 1919 



