Dec. 1896.] COCKERELL : NeW InSECTS FROM NeW MeXICO. 203 



No lateral tufts, but sides very mealy ; thick caudal tufts like those of D. virgatus, 

 not very long. Antennas very slender, 8-jointed. Formula 83(12) (456)7. All the 

 joints longer than broad. 8 with three whorls of hairs. 3 very slender, nearly as 

 long as 8. I longer than its breadth at base, 8 about or nearly as long as 6-(-7. 

 Joints with sparse whorls of long hairs. Color of antennae brown. Legs ordinary, 

 small, slender, pale brown. Tarsus about half as long as tibia. Claw short, moder- 

 ately curved. Tarsal digitules extremely slender, filiform, with minute knobs. Digi- 

 tules of claw about as long as claw, stout, bulbous at base. Tibia with four strong 

 bristles on outer margin. Caudal tubercles low, rounded, with a rather long bristle, 

 some short bristles, and a couple of short stout spines. The 9 does not stain the 

 liquid in which it is boiled. Young larva light yellow. 



Habitat : Organ, N. M., 5,100 ft., in great numbers at bases of 

 leaves of Dasylirion wheeleri. The larvae live at the extreme base of 

 the leaf, which is pallid; the adults a little further up. This is a typ- 

 ical Dactylopius , and quite different from D. olivaceus CklL, which 

 lives " in cavities in leaves " of Yucca. 



Dactylopius gutierrezise, sp. nov. 



9. Slate color, small (when boiled and flattened under cover-glass, long. 2, 

 lat. I mm.), forming a long firm snow-v/hite ovisac, 4 to 6 mm. long, about i mm. 

 broad, on the narrow leaves of the Gzitierrezia. 



9 . Elongato-oval, does not stain the liquid in which it is boiled ; antennae and 

 legs pale. Antennee 8-jointed, of the usual Dactylopiine type. Formula 

 812(37) (46)5. 5 is broader than long. 3 is conspicuously shorter than 2. I is very 

 large. 8 has three whorls of hairs. Anal ring with the usual 6 hairs. Caudal 

 tubercles very low, with the usual hairs, the longest a little longer than those of the 

 anal ring. Legs ordinary. Trochanter with a rather short bristle. Tibia almost as 

 long as femur, tarsus rather more than half as long as tibia. Claw small, not much 

 curved. Tarsal digitules filiform, without knobs. Digitules of claw stout, but very 

 short, shorter than claw. 



Habitat : Mesilla Valley between Las Cruces and Organ, abun- 

 dant on Giitierrezia sarothrce, var. Also abundant on G. sarothrce 

 near the Muscalero Agency, at the type-locality of Icerya townsendi. 

 This is not a typical Dactilopius, but is allied to such forms as D. town- 

 sendi and D. steelii. Its ovisac is exactly like that of Phenacoccus. It 

 has a chalcidid parasite. 



Ceroplastes irregularis CklL, var. rubidus, var. nov. 



9 . Scale very dark madder red or pinkish-brown, with the short dorsal line of 

 secretion showing up conspicuously white. Margin of waxy scale dull white. 

 Boiled in caustic soda, the liquid is turned claret color. 



Habitat : Whitewater, abundant on Atriplex canescens. At this 

 time (beginning of October) the scales were full of the pink eggs. The 

 dark pink-brown wax of this insect is very peculiar, and was perfectly 

 constant in the locality, the typical form not being observed anywhere 

 in the vicinity. 



