366 T. D. A. COCKKKELL. 



897. Aphis sp., dark gray with pale legs and antennse; on EpiloMum avgiistifo- 



lium, Willow Creek. 



898. Aphis sp.. large, pale whitish green, with a green dorsal line, legs long. 



tarsi black ; on Thermopsis, Willow Creek. 



899. Aphis sp., head and thorax red-brown, abdomen dark purplish gray, on 



Cnicus ochrocentrus, Ula, July 30. 



900. Aphis sp., dark gray, the young slightly brownisli, on Astragnlns, Ula, 



July 30. 



901. Aphis sp., very dark brownish gray, on Custilleia integra var. gracilis. Cu- 



sack Eanch, Aug. 3. 



902. Aphis sp., elongate-oval, black, on Populus tranuloides, September 13. 



COCCID^. 

 LECANIINvE. 



903. Orthezia occidentalis Dougl., found in nest of dark brown ant with large 



head and shiny abdomen. Specimens are in Brit. Mus. and U. S. Nat. 

 Mus. ; see "Ent. Mo. Mag." Sept., 1891, p. 245. 



904. Pulvinaria" n. sp., on Bigelovia at West Cliff. Specimens with Mr. Douglas. 



COCCINyE. 



905. Coccus cactit L., "Ent. Mo. Mag." 1889, p. 382. No adults in condition 



for examination were found, but I think the species is correctly iden- 

 tified. 



■•■■" P. S., June, 1893. I have now received excellent specimens of the Pulvinarin, 

 and am able to submit a description. 



Pulvinaridbigeloviseu.sp., 9 with ovisac 10 mm. long. Scale dark brown. Ovisac 

 white, elongate, firm, obscurely grooved, parallel sided. Boiled in caustic soda, 

 the scale turns the liquid pink. Antennse 8-jointed, joints 2 and 3 subequal and 

 longest; 4 shorter than 3, but longer than 5 ; 5 and 8 subequal ; 6 and 7 subequal 

 and shortest; 8 seems as if divided into two; 8 bears several rather short hairs ; 

 4 and 5 each with a short bristle ; 2 with two short bristles. Tarsus about three- 

 fourths length of tibia. Femur stout, very little longer than tibia. Claw large, 

 tarsal knobbed hairs and digitules of claw fairly stout, with distinct knobs. 

 Tarsal knobbed hairs rather short, extending only as far as the digitules. Tibia 

 with three bristles on innerside. Trochanter with one long hair. Anal plates 

 pale brown, short, posterior external side a little longer than anterior external 

 side. Anal ring with six stout bristles. Lower lip with two spines on each side, 

 one subterminal, the other lateral, margin with a few small simple spines. 



Described from specimens found by Mr. Frank Cusack. at West Cliff. June 16. 



In size and general appearance this species reminds one of P. wrJiicola C'kll., 

 which is found on Capsicum in Jamaica. 



t P. S., July 5 — What has been called Coccus cacti proves to consist of at least 

 three species, and there is no reason to suppose that the true C cacti, as described 

 by Signoret. occurs in the Rocky Mountain region. Di-. A. Duges has found a 

 species at Guanajuato. Mex., which Lichtenstein, in 1884, referred to Acaxtho- 

 eoccus tomentosus {= Coccus tomentosns Lam., considered by Signoret a synonym 

 of cacti). Dr. Duges has kindly sent me specimens of this species, which is cer- 

 tainly distinct from cacti. At Las Cruces, N. Mex., I have found a species con- 

 generic with, but distinct from, A. tomentosus ; this I pi'opose to call A. confusus 



