164 [June, 



ON SOME NEW OR LITTLE KNOWN COCCIDM FOUND IN ENGLAND. 



BY R. KEWSTEAB, F.E.S. 



PLATE II. 



Dacttlopius Walkehi, n. sp. 



? adult. Elongate, brown. Antennee and legs pale yellow-brown, covered 

 ■with a dense white powder ; the white cottony appendages of the margin stout, six 

 of these at the abdominal extremity longer and stouter than the others, the second 

 pair longest and vei'y stout, in length equal to the width of the body, the median 

 pair short, composed of a much finer felting, are best seen from the under-side. 

 Dorsum with numerous fine hairs and round spinnerets, the latter not raised above 

 the surface ; margin with a few hairs. Anal lobes normal, each with a medium 

 sized hair and two or three shorter ones. Ano-genital ring with six long hairs, the 

 intervening spaces with a row of extremely delicate hairs. Antennae (fig. 7) of eight 

 joints ; 1st, 2nd, 4th and 5th in length nearly equal, 3rd two-thirds the length of 

 the 8th, 6th and 7th shortest, equal, 8th longest, all the joints with many fine, long 

 hairs. Legs (fig. 7d) long ; femora and tibite in length equal, the former having a 

 row of long hairs on the under-side ; tarsi a little more than half the length of the 

 tibiae, both furnished on the upper and under-sides with a row of long hairs. Digi- 

 tules simple, upper pair stoutest. Length, 2\ — 4 mm. ; width, f — l.j mm. 



Sac cylindrical, composed of delicate white cottony filaments; in the centre 

 these become more felted. The whole structure, however, is \Gry fragile, and can 

 only bo obtained in a perfect condition by placing the $ on the food plant and pro- 

 tecting it with gauze. Length, 6 — 8 mm. ; width, 1^ — 2 mm. 



Hah. : on Ar/rosfis vulgaris, at Mauley, Cheshire, September 5th 

 to 9th, 1890. 



I was only able to find about nine examples, although I searched 

 unremittingly for several hours on many occasions. All occurred low 

 down near the base of the plants, and when disturbed, they walked 

 about much faster than any other Dactyloplus I have seen. 



The row of fine hairs of the ano-genital ring is abnormal in the 

 genus ; at least, I do not find any description of such by Signoret or 

 any other author. When placed in potash this species gives off a rich 

 dark crimson colour ; in this respect it is like D. indicus, Sign. (Essai, 

 p. 351), but differs in the form of the antennae and in other particu- 

 lars. It also differs from any other species that has the 8th joint the 

 longest. So far this is the only indigenous representative of the genus. 



I have much pleasure in dedicating this sjiecies to Mr. Alfred 

 Ostend Walker, Nant-y-Glyn, Colwyn Bay, who for many years has 

 kindly helped me in all my zoological studies. 



EllIOCOCCUS INSIONIS, n. sp. 

 ? adult. Dark crimson,* elongate, oval ; dorsum with a number of flanged, 



* This apijlios to the desiccated ? only ; I have not secu living examples. 



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