446 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 2 



tively, but the types are identical. This very convex species seems 

 restricted principally to oaks for the writer has attempted several 

 times to transfer it to several other trees but failed to obtain adults, 

 though the larvffi lived for some time on the strange host-plants. 



This species is very convex, sometimes broader at the summit than 

 at the point of attachment; light brown with a variable dark marking 

 in the mid-dorsal region. The antennae and legs are unusually long 

 and slender; the derm pores (see photomicrograph) are rather large 

 and regularly scattered but far apart; the spiracular and marginal 

 spines are more slender than in corni or pruinosum. This species can 

 be recognized by the three or four apparent scars near the outer angles 

 of the anal plates, which otherwise are quite similar to those of L. 

 corni. 



The range of this species is very general, but it is of particular 

 economic importance to the oaks in the south Atlantic and Gulf states. 

 Signoret described his species ant ennahim' from specimens on oak sent 

 to him by Fitch from New York state. 



The Globular Scale 



Lecanium prunastri (Fonsc.) 



Coccus prunastri Fonsc, An. Soc. Eut. Fr., Ill, p. 211 (1834). 

 Lecanium prunastri Sign., An. Soc. Ent. Fr., V, p. 423 (1873). 

 Lecanium rotundum Sign., An. Soc. Ent. Fr., V, p. 428 (1873). 

 Eulecanium prunastri Fernald, Catalogue of Coccidge, p. 193 (1903). 



This almost globular, small dark-red species is fairly common in 

 Europe, but is found in few localities in the United States outside of 

 Pennsylvania, where it has been known for a number of years. It 

 infests principally plum, cherry and peach, and is remarkably gregari- 

 ous in habit. 



The best microscopic character of this species is the compound row 

 of 100 or more small derm pores extending anteriorly from the anal 

 plates. A stained specimen shows this character more satisfactorily 

 than an untreated one. 



The Terrapin Scale 

 Lecanium nigrofasciatum (Pergande) 

 Plate 19, Fig. 6 

 Lecanium nigrofasciatum Perg., Bui. 18, n. s.. Bur. Ent., U. S. Dep. Agr., 

 p. 26 (1898). 



The original description of this native scale in the above reference 

 and Circular No. 88, of the U. S. Bureau of Entomology, containing 



