DESCRIPTIVE NOTES ON TWO COCCID^. 13 



length to 7 ; 1 very broad, about as lonp: as 6. Formula 4 (35) (61) 

 (72) 8. Total length of antennae about the same as widtli of mouth- 

 parts. Mouth-parts brownish, large and well developed. Derm colour- 

 less after boiling, thickly beset with double glands and rod-like struc- 

 tures. Anal area with a brown chitinous armature, consisting of an 

 upper portion shaped like a slug's jaw, and a broad transversely elon- 

 gate lower portion, with apparently a large central aperture, but really 

 consisting of two large lateral plates, connected by a strong isthmus. 

 Anal ring moniliform, with several hairs. 



On Celtis occidentalis, San Antonio, Texas, Nov. 27th, 1895 

 (C. H. T. Townsend). Recently, Prof. E. E. Bogue has found a 

 Lecaniodiaspis in Oklahoma, which is like the above, but a little 

 larger. I have not yet made a detailed study of it, but have no 

 doubt it is the same species. 



"^ (2.) PuLviNARiA iNNUMERABiLis, Rathv., Variety? 

 2 . Dark brown, when boiled and flattened under cover-glass, 

 Q^ mm. long, 5i broad. Antenna long, slender, pale brown, joint 3 

 longest ; 2, 4, and 5 subequal in length, 8 a little shorter ; 6 and 7 

 equal and shortest. Formula 3 (245) 81 (67). 2 and 5 each with two 

 hairs near the end. There is quite a constriction at the suture between 

 7 and 8. Legs pale brown, slender ; coxa large, trochanter with a 

 long hair, femur about as long as tibia, tarsus about half as long as 

 tibia. Digitules of claw fairly stout, with large knobs, that of one 

 round, of the other oval ; both extend considerably beyond tip of 

 claw. Tarsal digitules unequal, one not much longer than those of 

 claw, with the terminal half bulbous, the other longer and slender, 

 with an obliquely placed knob. Derm with large round and oval 

 gland pits. Stigmatal spines in threes, one very long, two short. 

 Margin with small simple sharp spines, in two rows, not near to 

 each other. 



The above description relates to the Pidvinaria which Prof. 

 C. V. Piper finds " so common a pest in Western Washington 

 [State];" found on currant, hawthorn, plum, pear, mountain 

 ash, willow, poplar, gooseberry, and alder. Prof. Piper remarks: 

 " Of one thing I am certain ; it is not native to Western Wash- 

 ington." Formerly Prof. Piper referred it to P. innumerahilis, 

 but was criticised for so doing, more especially as its food-habits 

 seem different from those of that species. The question was 

 raised, whether it might he the European P. rihcsia, intro- 

 duced ; but that is a much smaller insect. On the whole, it 

 must be confessed that it is at any rate not very different from 

 P. innumerahilis ; and since we have no adequate information 

 about the variation of that insect, it seems premature to separate 

 the Washington species as distinct. I will suggest, therefore, 

 that provisionally we call Prof. Piper's insect, above described, 

 P. innumerahilis var. occidentalis. The ovisac resembles that of 

 inniimerabilis. 



