516 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxvn. 



35. ALEYRODES RUBORUM Cockerell. 



Alet/rodeii ruborum Cockerell, Jn. N. Y. Ent. Soc, V., No. 11, p. 96; Ann. Rept. 

 Fla. Agr. Expt. Sta., 1898, p. 66. 



On cultiv^ated Ruhus eunelfoliiis at Lake City and San Mateo, Florida. 



36. ALEYRODES PERILEUCUS (Cockerell). 



Aleyr odes peril euca Cockerell, Proc. Acad, of Nat. Sci. Phila., May, 1902, p. 283, 

 and ill an as yet unpublished bulletin written for the Florida P^xper. Station, 

 by T. D. A. Cockerell, who kindly furnished the author the description. 



Pujxi-case. — Oval in shape; extremely dense in texture; color per- 

 fectly black. Lateral margins with a fringe of very narrow; regular, 

 white waxen ribbons regularly and strongly beaded. Dorsum free 

 from secretion; it has a sharp, submarginal keel and a distinct longi- 

 tudinal keel, which is sharp on the thorax and broad and rounded on 

 the abdomen, where it is crossed by six narrow, transverse longitudi- 

 nally corrugated bands. Abdomen with transverse ridges marking the 

 segments. Vasiform orifice shovel shaped; marginal area with very 

 numerous radiating furrows, the areas between them minutely punc- 

 tured. Margin of case very regularl}- cronulate. The conical, black, 

 larval skin was found in one example on the back of the pupa, but 

 ordinarily it is lost. 



Adults. — Unknown. 



It occurs at La Jolla, California (Cockerell), and Cuero, Texas 

 (Townsend), on leaves of Quercus^ solitary on the upper side. 



37. ALEYRODES STELLATUS (Maskell). 



Aleyrodes stellata Maskell, Trans. New Zealand Inst., 1895, p. 442. 

 On LigniDii-inPe^ in compan}^ with A. floccosa, Jamaica. 



38. ALEYRODES DIASEMUS, new species. 



Larva.- — Size, 0.3 by 0.2 mm.; elliptical; no dorsal secretion, lateral 

 fringe approximately one-sixth the width of larva. It is made up of 

 opaque wax rods coalesced at base, but distally divided into irregular 

 plates, sometimes ragged at the ends. Color, transparent white, 

 slightly yellow around the mouth parts and in the central abdominal 

 region. Dorsum convex and with a longi-medial carina; lateral mar- 

 gins with 14 pairs of equally spaced hairs, with the exception of the 

 difierence between the ninth and tenth pairs, which is much greater. 

 Each hair is set in a conical base, and from each there is a distinct 

 oblique fold extending mesad; the usual caudal and latero-caudal hairs 

 are present. Immediately caudad of the eye-spots there are a pair of 

 large circular pores, which luay be the anterior pair of spiracles; the 

 case is so thin and transparent that it could not be determined whether 



