perceptibly longer than in any other of the group. The gland-spines 

 are arranged as follows : i, 2, 1-2, 1-2, 2-3. Those on the anterior 

 part of the pygidium are large and conspicuous, decreasing in size 

 toward the median lobes. Second row of dorsal gland-orifices repre- 

 sented by the anterior group consisting of 4 5 orifices. Third row 

 with 5 7 orifices in the anterior and 4 5 in the posterior group. 

 Fourth row with 5 6 orifices in the anterior and 5 7 in the posterior 

 group. Median group of circumgenital gland-orifices 10 16; anterior 

 laterals, 20 24; posterior laterals, TO 17. 



SCALE OF MALE. Plate 2, Fig. 2 A. Length, .6 .8 mm. Oval, 

 without carinae. Exuvia brownish or colorless. 



REMARKS. 



The absence of carinae on the male scales of this insect and 

 C. ortholobis indicates a relationship between the two species and 

 separates them from all others of the genus. C. longiloba can be 

 separated from C. ortholobis by the smaller size of the scales and the 

 greater length and more pointed form of the median lobes in 

 C. longiloba. 



The specimens from which the foregoing descriptions were made 

 are from the Department of Agriculture and were collected on cot- 

 tonwood in Texas. 



CHIONASPIS ORTHOLOBIS. 



Chionaspis ortholobis Comstock, Rep. U. S. Dept. Agr., 1880, p. 



317(1881). 

 Chionaspis ortholobis Comstock, Second Rep. Dept. of Ent. Cornell 



Univ. Expt. Sta., p. 105 (1883). 



Chionaspis ortholobis Packard, Fifth Rep. U.S. Ent. Com., p. 594(1890). 

 Chionaspis ortholobis Cockerell, Can. Ent., Vol. XXVI., p. 189 (1894). 

 Chionaspis ortholobis Howard, Ins. Life, Vol. VI., p. 328 (1894). 

 Chionaspis ortholobis Gillette & Baker, Hemipt. of Colo., p. 129 (1895). 

 Chionaspis ortholobis Cockerell, Bull. 24, X. Mex. Ag'l. Expt. Sta., p. 



38 (1897). 

 Chionaspis ortholobis Osborn, Contr. from Dept. of Zool. and Ent. la. 



Ag'l. College, Xo. 3. p. 5 (1898). 



