hunter: the coccid^ of Kansas. 15 



There is a spine on or near the lateral margin of the lobe, one 

 between the first and second incisions, one laterad the second in- 

 cision; the fourth spine is as far from the third as the third is from 

 the median lobe. There is a small spine at a distance from the 

 penultimate segment equal to distance between the second and 

 third spines. On ventral margin of penultimate, and on each of 

 the two segments cephalad, there are a pair of small spines. The 

 rest of the body bears a spine on the ventral margin at somewhat 

 irregular intervals. 



Plates prominent, not quite as long as the spine, two caudad 

 first incision, one or both forked, one forked plate caudad second 

 incision and two plates, generally simple, between the incisions. 

 Several rudimentary plates laterad second incision. 



From eleven satisfactory mounts and many scales of both sexes. 



On Sa/ix nigra Marshall. Douglas Co. 



This species belongs to the subgenus Epidiaspis Ckll. MS., the 

 type of which is D. piricola Del Guercio. The number of glands 

 in the median group of siunvii are less than in piricola, The glands 

 of all groups are much less in number than in D. pyri Colvee. A 

 distinction of moment is the extreme posterior position of anal 

 orifice as in Diaspidiotits. This orifice is well cephalad upon the 

 last segment in piricola, being located between the caudo-lateral 

 groups of glands. The median lobes of this species show distinct 

 notch about midway upon lateral margin, piricola is entire.* 



It is highly fitting that this interesting representative of a 

 European group, the first Coccid to be described from this labora- 

 tory, be dedicated to Chancellor F. H. Snow, whose persistent and 

 untiring labors in the field of Natural History are largely responsi- 

 'ble for the present status of biology in the Universit}'' of Kansas. 



My sincere gratitude is due Professor Theo. D. A. Cockerell for 

 material encouragement and valuable suggestions kindly offered in 

 the pursuit of these studies. I wish to express my appreciation of 

 the assistance of Mr. P. A. Glenn, a student of this department 

 last year, in the acquisition of the material here studied, and to 

 acknowledge the earnest and careful work of Miss Ella Weeks in 

 her part of the delineations accompanying this article. 



T!ie genns, Lecaniii/n is now under consideration and it is expected 

 that a discussion of the Kansas forms will appear in a later number 

 of the Kansas University Quarterly. 



Authors Edition, publislicd December I'j,i8g8. 



*For comparison between D. piricaki and D. pyri, see Bull. Div. Ent. Tec. Ser., No. ti. 

 p. i, Cockerell. 



