150 '[December, 



NOTES ON SOME BRITISH AND EXOTIC COCCIBM (No. 12). 

 BT J. W. DOUGLAS, F.E.S. 



COCCUS AGAYITJM, 11. sp. 



Fig. 2. Fig. 1. Fig. 4. Fig. 3. 



9 adult ; short rounded-oval, a little narrower in front (Fig. 1), smooth, without 



mealy or cottony covering, very convex and firm on upper-side, pinky -yellowish, with 



some light brown specks on the back, somewhat in two longitudinal rows ; beneath 



soft and very tumid ; segmentation visible above and beneath ; no anal ring, process 



or hairs. Legs short, much imbedded in the pulpy body ; tibiae short, tarsi fully as 



long, claws short ; hairs simple. Antennae (Fig. 2) short, stout, tapering, of seven 



joints ; the 1st longest, 2nd, 3rd and 4th nearly as long, sub-equal, 5th, 6th and 7 fix 



each consecutively shorter and smaller, and having a few hairs. After full gestation 



the insect becomes covered with loose cottony material copiously exuded from its 



body, under this the ovoviviparous parturition takes place, as stated below. 



Length, 2 — 3 mm. 



$ blackish-brown, shining ; head broadly produced anteriorly ; antennae (Fig. 



3) long, slender, piceous, with projecting simple hairs ; of ten joints, the first two 



thick, 1st shortest of all, narrow at base ; 2nd oval, twice as long as the 1st ; 3rd to 



5th thinnest, 3rd longest of all ; 4th and 5th one-fourth shorter, sub-equal ; 6th 



to 10th stouter, 6th as long as 2nd ; 7th shorter ; 8th and 9th still shorter, 



sub-equal ; 10th shorter than 9th, conical. Eyes simple, an ocellus vertical 



and close to the margin of each. Thorax broad, convex, sides divergent to 



an angle, posterior angles prominent ; posterior depression large. Wings very long, 



ample, clear white ; halteres short, white. Terminal filaments of the body long, 



white. Legs (Fig. 4) long, slender, piceous, with short, projecting, simple hairs ; 



tibiae very long ; tarsi one-fourth as long as the tibiae, claws very short. Pupa in a 



close fitting sac made by the larva. . Length,- 1 mm. 



This species, by having only the (in the Coccina) anomalous 

 number of seven joints in the antennas of the female and ten joints 

 in the antenna; of the male, comes .well into the genus Coccus as defined 

 and restricted in these respects by Signoret (Ess. Cochen., p. 380), 

 of which only one species (C. cacti, Linn.) has hitherto been described ; 

 but from it the present species, except in the two points mentioned, 

 conspicuously differs. At one time I thought it might constitute the 



