No.ioOi-v ALEYRODlbS OF CALIFORNIA— BEMIS. 517 



the pores were dorsal or ventral; abdominal segments distinct; crenu- 

 lations of the margins minute; vasiforni orifice as in pupa case: the 

 antennti? are not visihlc; the legs are distinct, though reduced; this is 

 not the usual condition of thi'sc organs at this stage or size; eye-spots 

 single and red. 



J*tfjx(-case. — Size, l.-l ))y o.s-t mm.: elliptical, case flat; there is con- 

 siderable variation in th(^ amount and ivind of secretion; specimens 

 may have both lateral and dorsal wax, or either alone, or none: when 

 present the lateral fringe is of coalesced crystalline wax rods either 

 free from or covered b}- flocculent wax; the dorsal secretion is in the 

 form of a su1)marginal series of separate cr3\stalline Avax rods, rather 

 long and curved downward; when the case is lifted there remains a 

 short vertical fringe of coalesced, opaque white wax rods. Color, 

 glistening yellow. Dorsum convex and bearing 12 pairs of extremely 

 long, stout spines — a pair of caudo-submarginal, a pair of latero-caudo- 

 submarginal, a pair mesad of the latter, a pair caudad of vasiform 

 oritice, a pair laterad of these, and a pair laterad of the anterior mar- 

 gin; a pair of abdomino-sul^marginal, a pair of extremely long ones 

 on first abdominal segment near median line; two pairs on thorax close 

 to median line: a pair of cephalo-submarginal. On the cephalic region 

 near the dorsi-meson and caudad of the lirst pair of spines is a pair of 

 small pores; mesad of the first pair of thoracic spines is another pair: 

 on the abdomen there are two parallel rows on each side of the dorsi- 

 meson. Abdomen with a slight longi-medial keel, along which the 

 sutures are distinct, the posterior ones reflexed caudad. Vasiform 

 oritice a brighter yellow than the surrounding dorsum, broadly ovate, 

 as wide as long, apex broadly rounded: operculum, subrectangular, 

 about one-half length of oritice, distal margin truncate; lingula nearly 

 as long as the oritice, spatulate, often dorsally recurved; setose for 

 al)out four-tifths of its length, with two terminal lobes and a pair of 

 long latero-apical hairs which project caudad beyond the oritice. Mar- 

 ginal crenulations vary from shallow to deep, l)ut they are always 

 broad, round, and with acute reentrant angles. On the ventral sur- 

 face the reduced legs are seen, apparently with all the parts except the 

 tarsi present; antenna^ nonsegmented, base broad, apex abrupth' nar- 

 rowed into a slender, tinger-like process; ej^e-spots large and red. 



Adults. — Un k now n . 



Cotypes.—^o. 7096, U.8.N.M. 



Collected on campus, Leland Stanford Junior University, along 

 San Francisquito Creek, September 18, 19(il, and at various other 

 dates, from the under sides of the leaves of Synqj/ior/carjws racenioxns. 

 Also collected on leaves of Eihes ghithiosiun^ near Menlo Park. Sep- 

 tember, 1901, and on the same host in Alameda. June, 1901. and on 

 Kings ]Mountain, August, 1901. 



Proc. N. M. vol. xxvii— 08 3<) 



