42 OHIO STATE ACADP^MY OF SCIENCE. 



Larvae: The male and female larvae are similar to adult female 

 in shape and color, but the male larva has 7-jointed and the female 

 6-jointed antennae. 



Remarks : This is a pest in almost every conservatory, and 

 is difficult to control since the waxy secretion protects it from a 

 spray of water, and only by a spray of considerable force can it 

 be dislodged. 



Fscudococcus pseiidonipae (Ckll.) 

 Dactylopius nipae Davis, Spec. Bull. 2, Mich. Exp. Sta., p. 28 (1896). 

 Dactijlopius pseudonipae Ckll., Science Gossip, N. S., iii, pp. 189,. 

 302 (1897). 



Dacti/lopius pseudonipae King, Can. Ent., xxxi, p. 112 (1899). 



The author found this peculiar Fseudococcus on palms in a 

 greenhouse at Painesville, where it was quite a pest. 



FSEUDOCOCCUS TRIFOLII (Forbes). 

 Figs. 52, 53, 54. 



Coccus frifolii Forbes, i4th Rep. Ins. 111., p. 72 (1885). 



Dactylopius trifolii Osborn, Contr. la. Ag. Coll.. p. 2 (1898). 



Dactylopim trifolii Davis, Bull. 116, Mich. Exp. Sta., p. 58 (1894). 



Adult female: 2 — 2.3 mm. in length, reddish-brown, covered with 

 granular, waxy secretion. A fringe of seventeen waxy processes 

 extends around the body, longer at caudal end, sometimes one-third 

 the length of the body. The legs are dirty yellow in color, femur 

 and tibia siibeciual, tarsus of hind leg more than one-half the length 

 of the tibia. Four digitules, the two superior ones long and slender, 

 two infex'ior stouter and knobbed at tip. Antennae 8-jointed; joint one 

 swollen, stout, as broad as long. Formula: 8 (321)5(467). The 

 fourth joint varies considerably, sometimes smaller, sometimes larger 

 than 5, 6, or 7. Anal lobe bears one long and three short setae, and a 

 mass of small gland-spots with two conical projections. Ano-genital 

 ring large, dotted, with six long setae, about same length as anal lobe 

 setae. Penultimate segment conspicuously dotted with gland orifices. 



Remarks : On roots of clover at Columbus, 0., not plentiful. 



Subfamily COCCINAE. 



This group which belongs here in order of arrangement, has 

 been omitted in this paper, with the expectation of a later ac- 

 count. Ijack of material and literature have been the main 

 factors in the omission of this group. 



