EXPERIMENT STATION BULLETINS. 669 



Male pnparinm thin, waxy, wrinkled somewhat and broad, but not 

 differing otherwise markedly from the common type of puparium. 



Adnlt female in dried specimens brown, naked, somewhat wrinkled 

 and of large size. Some measuring more than 1/-^ iiich long, round-oval 

 and elevated ; in our specimens the form is distorted owing to their 

 being crowded into grou])S. 



Derm not strongly chitiuized except that there is often in old speci- 

 mens a horseshoe shaped area of thick, brown chitin partially surround- 

 ing and bordering the anal-plates. In front of this area or just in 

 front of (cephalad of) the anal-i)Iates are a large number of small 

 round pores scattered thickly on the dorsal surface. On the ventral 

 surface just under the dorsal pores are many small, transparent spines, 

 varying in size. 



In caustic soda there is given off a reddish-brown color during boil- 



s' 



mg. 



Antennae short, blunt and reduced to small size. Legs short and 

 stumpy. Marginal setae small, regular and numerous. Spiracular 

 setae very short and stout. 



Anal-plates with rounded angles, cephalo-lateral margins nearly 

 straight. Caudo-lateral margins curved. Anal-ring with 10 long setae. 



On each side there are two fringe setae and five sub-apical setae. On 

 dorsal surface there are three apical setae arranged in a triangular 

 position. There are also five or six hypopygial setae extending cephalo- 

 mesad from each pair of fringe setae. 



Found on Tulip-tree. There is but one annual generation, the young 

 being bom in the autumn according to Dr. Britton,* the females be- 

 ing partially grown when winter sets in. As a rule- the lower branches 

 are first attacked and killed. Dr. Britton also records this scale on 

 Magnolia and on Linden. 



LECANiuM (Eulecanium) caryae Fitch. 



Mature females large, and oval in form, flat, or less commonly ele- 

 vated, the cephalic third usually broader than the rear two-thirds. The 

 color is mahogany-brown. Anal-cleft deep and conspicuous. The anal- 

 plates are proportionately small. Surface wrinkled, usually varnished, 

 covered with waxy, pruinose coat, specimens often half an inch long 

 and when on larg-^e limbs, quite flat. On small limbs they are apt to 

 be more elevated and of smaller size. 



Derm over the entire body marked by pores. Antennae six or seven- 

 jointed with joint three much the longest. Marginal spines large and 

 forming a conspicuous row about the body, spiracular setae not present 

 in any specimens thus far observed. Ano-genital ring with eight spines. 

 Anal-plates not very strongly chitiuized and apt to be wrinkled, in 

 younger specimens the caudal angle is apt to be rounded, although, in 

 older examples this angle appears more pointed. There is a distinct 

 V-shaped notch formed at the cephalic angles of each pair of plates. 



The setae of the anal-plates seem to be variable in number and posi- 

 tion. On each side there is one fringe seta; three sub-apical setae 

 which may be placed either near the margin or in some cases in their 

 normal location; an apical seta at the extreme apex of the plate, some 



♦state Ent. of Conn., 12th Rep., p. 294. 



