336 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 
lateral! consist of from seven to sixteen, and the posterior laterals of from four to 
eight. 
There are two or three pain of lobes. The median lobes are well developed, but 
vary in outline ; the second lobe of each side it le->- than one-half as large as the 
median lobes, elongated, and with one or two notches on the lateral margin ; the 
third lobe is still smaller and pointed, or is obsolete. 
There are two pairs of incisions of the margin, one between the first and second 
lODOS of each side, and one between the second and third lobes ; they are small, but 
are rendered conspicuous by the thickenings of the body wall bounding them. 
The plates are simple, inconspicuous, and resemble the spines in form. The larger 
ones are situated one caudad of each incision. 
The spines are prominent, especially those laterad of the second and third lobes ; 
the fourth spines are a little nearer the first lobes than the penultimate segment, and 
the lifthare near the penultimate segment ; there is also a spine at or near the union 
of the last two segments. 
Scale of male. — The scale of the male resembles that of the female in color; it is 
elongated, with the larval skin near the anterior end ; this skin is covered by excre- 
tion, but its position is marked by a rose-colored prominence, as in the scale of the 
female ; the anterior part of the scale is much more convex than the posterior pro- 
longation, which is flatteued. There is a rudimentary ventral scale in the form of 
two narrow longitudinal plates, one on each side of the lower surface of the scale. 
Length, l.*25 mm (.05 inch). 
Habitat. — On the bark of the larger limbs of English walnut (Juglans regia), at 
Los Angeles, Cal. Described from sixty -three females ; aud many scales of each sex. 
There are in the collection of the department specimens of Aspidiotus from locust, 
pear and cherry, from New York aud District of Columbia, which apparently belong 
to this species. (Comstock.) 
The following insects also occur on the black walnut: 
20. Thecla calanus Hiibn. On Juglans cinerea. 
27. Halesidota maculata Harris. (Harris's Ins.) 
28. Halesidota tesscllata A. and S. (Beuteninuller.) 
29. Orgyia leueostigma A. and S. (Beuteninuller.) 
30. Parorgyia cinnamomea G. & R. (Beutenrmiller.) 
31. Limacodes scapha Harris. (Beuteninuller.) 
32. Halesidota caryw Harr. (Beuteninuller.) 
33. Datana angusii Grote & Rob. (Grote & Rob.) 
34. Telea polyphemus Linn. (D. S. Harris in letter; Riley's notes.) 
35. Heterocampa pulverea G. & R. See Oak insects, p. 159. 
36. Apatela americana (Thaxter, Papilio, iii, 17.) 
37. Apatela luteieoma (Thaxter, Papilio, iii, 17.) 
38. Charadra propinquilinea Grote. See p. 167. 
39. Catocala vidua Abbott and Smith. 
•40. Catocala lacrymosa Gueu. probably. See p. 178. 
41. Eugonia alniaria Hiibuer. 
42. Tortrix H ley ana Grote. 
Hemiptera. 
43. Schizoneura caryw (Fitch.) 
44. Callipterus caryev Monell. 
