THE CANADIAN ENTOMOLOGIST. 225 



Boiled in caustic soda, they stain the fluid cochineal-red, and turn 

 orange. Anal ring with the usual 6 hairs. Caudal tubercles very low, 

 subobsolete, with seta? which are about twice as long as the hairs of the 

 anal ring in the second stage, but not so long as this in the adult. 

 Antennae 8-jointed : 8 much longest, as long as 5 + 6 + 7, which are sub- 

 equal, but 5 the shorter ; 4 shortest, broader than long ; 3 and 2 equal, 

 formula 8 (32) 7 (61) 54. Legs ordinary, tarsus about S/^ to fi length 

 of tibia, claw fairly large, digitules tiliform, hardly knobbed. 



Hab. — In the town of Mesilla, N. M., on Mesquite (Frosopis). I 

 was astonished to come across this on some bushes I had passed many 

 times. I have never seen it before on the numbers of Mesquite bushes 



1 have examined in the vicinity. The eggs are produced at the latter 

 part of July. This insect, in structure, particularly in the antennae, 

 closely resembles D. solani, var. atriplicis, which is probably a distinct 

 species. Perhaps prosopidis and atriplicis may be forms of one species, 

 but they seem distinct. 



(5.) Ptilvinaria atnygdaii, n. sp. — ?. Ochraceous, much wrinkled 

 in drying ; length of a boiled specimen under cover-glass hardly 2)4 

 mm., broad oval. Ovisac about 7 mm. long, pure white, convex, like 

 that of P. ribesice, not parallel sided like camellicola, etc., nor adherent to 

 anything that touches it, like niachirce, innumerabilis, etc. 



Antennte 8-jointed : 3 much longest, then 4, then 8 almost as long, 



2 very little longer than 5 ; 6 and 7 subequal and shortest, 6 a little the 

 shorter ; 5 with two long bristles ; 2 with a long hair at its end. 

 Trochanter with a very long hair. Femur stout, more than twice as 

 broad as tibia, with an erect hair on its inner side near the middle. 

 Tibia and tarsus slender, tibia about as long as femur, tarsus hardly half 

 as long as tibia. Claw short and curved, sharp. Tarsal digitules slender; 

 those of claw tolerably stout, with oblique knobs, extending considerably 

 beyond tip of claw. Marginal spines simple, slender, not numerous. 



Prof. Tinsley, who was looking over the material with me, observed 

 a specimen in which the third and fourth antennal joints were about 

 equal. 



Hab. — Abundant on a peach tree in Mr. Stanley's garden at Pinos 

 Altos, N. M. (over 7,000 ft. alt.) ; found only on one tree. The antennas 

 are much like those of P. persicce, Newst., but amygdali \\3>.?, the eighth 

 joint decidedly longer. The knobs of the clavv-digitules are larger and 

 more oblique than in pe?-sicce, and our insect is much smaller than 

 Newstead's. The affinity of amygdali is clearly with P. ribesice. Sign., 



