29 



Ccecilins mobilis Hagen. — A single siiecimeu agreeing perfectly with 

 tlie brief but imperfect description of Dr. Hagen was taken on the under 

 surface of a cotton leaf August 5. 



A second species belonging to another genus is apparently unde- 

 scribed, and for this I have proposed the name Psocus gossypii. It is 

 characterized as follows: 



Psocus gossypii n. sp. 



Female. — Leugth to tip of wings, 6"""' ; expanse of wings, 10.5°*"'. Rust-brown; 

 ocelli, palpi, and antennae except two basal joints, black; abdomen, except toward 

 base above, blackisli-fuscous; apical margin of the scutellum and legs (except the 

 tibiai and tarsi, which are fuscous or blackish), yellowish; wings, fuliginous, 

 the large triangular pterostigma and the venation (except of the median nervure and 

 its fork, the claval veins bahally, the short vein along the hind margin just beyond 

 the apex of the clavus, and the vein joining the hind fork of the mediannervure and 

 forming the posterior side of the closed quadrate discoidal cell, which are yellow- 

 ish,) black. 



This species belongs in the section with P. venosus Burm. and super- 

 ficially resembles it; but it is relatively smaller (although specimens of 

 P. venosus are occasionally fouud as small), the color is paler without 

 the brassy tinge on the head, while the pterostigma is black, not yellow. 



(To be continued.) 



ON A LECANIUM INFESTING BLACKBERRY, CONSIDERED IDEN- 

 TICAL WITH L. FITCHII, SIGN. 



By T. D. A. CocKERELL, Las Cruces, N. Mex. 



In the year 1801 (or 1804 !) Schrank described a scale found on Rubus 

 in Europe, naming it Coccus riibi. Signoret, when writing his '' Essai," 

 recognized that this was a Lecanium, but beyond this he could say 

 nothing very definite, as Schrank's description was extremely short, 

 and the insect had not been seen by him. 



Lichteustein, however, in 1882, i)roposed a new genus Tetrura, its 

 type being T. rubi, which he supposed to be the Coccus rubi Schrank. 

 But his insect was a form allied to Dactylopius and therefore not that 

 of Schrank, which still remained unknown to modern authors. 



Fortunately, in May, 1891, Dr. T. A. Chapman rediscovered Lecanium 

 rubi (Schr.) in England, and in June of the same year the species was 

 also found by Mr. J. W. Douglas. The latter gave an extended descrip- 

 tion of it, with figures by Mr. a^ewstead, in the Entomologist's Monthly 

 Magazine (1892, pp. 105-107). 



Coming now to this country, we find in Signoret's work a description 

 of Lecanium Jitchii, which was found on bramble by Asa Fitch. The 

 latter had labeled it L. rubi, but Signoret observed that it did not seem 

 to be the same as that of Schrank, and accordingly proposed the name 

 L. Jitchii. 



3013— Xo. 1 3 



