334 THE ENTOMOLOGIST. 



find one which showed the three dorsal keels just as in Fitch's 

 type. The broad anterior notch I did not match, but probably, 

 among a number, some would be found presenting the same 

 character, which is undoubtedly due mainly to contraction in 

 drying. Therefore, having these facts in view, the Fitch specimen 

 may be said to confirm the opinion that it and the Piochester 

 species are the same. It should be stated, however, that none 

 of the immature females from Kochester' are so large as 

 Fitch's type. 



The occurrence of this Jtif/Jans scale on plum has its parallel 

 in the case of At^pidistus jKuldns-ref/ice, Comst., which has lately 

 been detected on plum and other fruit trees. The parallel is 

 more complete from the fact that A. juglans-regue seems also to 

 have been described from Europe as A. juglandis, Colvee. The 

 probability seems to be that L. jufilandis is a native of America, 

 but this is very far from proven. It will be remembered that 

 Signoret failed to find it in France. 



In oidi-r to render the identitication of the S[)ecies somewhat 

 more certain in the future, I have noted the following micro- 

 scopical charat-ters : — 



L. jiifilaiidis on pliun from Eochester. Antennae shorter than 

 then' distance from the margin, seven-jointed, 3 much longest, 

 then 4 ; formula 34 (71) 2 (56). I have bracketed 1 as equal to 

 7, but it is |)erhaps hardly so long. 1 with a hair ; 2 with two 

 long hairs; 3 apparenily hairless; 4 with two long hairs and 

 one short one near its distal end ; 5 and 6 each with a hair ; 

 7 with about eight long hairs. Legs slender ; coxa with three 

 hairs at distal end, two on outer, one on inner side ; trochanter 

 with a very long hair ; femur about as long as tibia ; tarsus 

 about two-thirds length of tibia ; claw nearly straight ; a very 

 long ttirsal knobbed hair, with the knob almost obsolete ; digitules 

 slender and hair-like. Margin with very small spines. Stigmatal 

 spines in pairs, rather small. Derm not tessellate, but with 

 scattered gland-spots. Eostral loop short. Anal ring with six 

 stout hairs. 



The above was written on June 7th. Since then, the MS. has 

 been sent to Messrs, L. 0. Howard, of Washington, and M. V. 

 Slingerland, of Ithaca, N.Y., who had interested themselves in 

 the matter. Some discussion and doubt has arisen regarding 

 the identification of the scale, notwithstanding the facts above set 

 forth, and consequently a few further observations appear to be 

 necessary. 



Mr. Howard remarks that he cannot distinguish the Rochester 

 scales from specimens of L. persicce, which had been received 

 from Mr. Newstead. Bouche himself did not fail to note the 

 great resemblance of L. juglandis to L.persicce, as above quoted; 

 and I quite expect that if Dr. Lintner had not sent me good fresh 

 material, I should have replied to him that the insect was appa- 



