178 Annals Entomological Society of America [Vole Va 
ve ee | | | 
Joints I II | III | IV V | vI | VII | VII 
Range of measurements....| 54-80 58-82 64-84, 30-50} 40-62 30-48) 40-50) 94-110 
Most common meas’rem’ts| 60.62 | 65.67 | 70.74 | 36.38 | 46.48 | 38.42| 44 | 102 
Average of 20 meas’rem’ts| 64.) 7000 70 ps0) 505 1 405 Ves LOT) 
Fig. 1. Pseudococcus longispinus 9Q 
Sete of Anal Lobes: 110u to 130pu, with 124 pw the most common 
length. 
Sete of Anal Ring: 122u to 148y with 1344 the most common length. 
Remarks: This species is commonly found on ferns, etc., in 
greenhouses. 
Pseudococcus citri Risso 1813. 
Dorthesia citri Risso. Essai Hist. Nat. des Oranges, etc. Paris 1813. 
Coccus citri Boisduval. Essai sur 1’Entom. Hort. 1867. 
Dactylopius citri Signoret Essai sur les Cochenilles 1875. 
Dactylopius brevispinus (ex. p.) Targioni. Annali di Agricoltura 1881. 
Dactylopius destructor Comstock. Ann. Rep. Comm. Agr. 1880. Washington, 
1881. 
This species—the common mealy-bug of literature—is 
easily distinguished from P. longispinus by the absence of the 
long caudal filaments, and from the other species of the locality 
by the fact that the waxy secretion is most scant down the 
median dorsal line. Its general appearance is well shown in 
Plate XIV, Fig. 3, which is greatly enlarged. The seventeen 
lateral wax appendages are often more or less wanting in old 
rubbed specimens, especially those living in exposed positions. 
Ovisac: Small, more or less spherical, at first covered by the body 
of the female. As the mass increases it is generally seen as a rounded 
mass protruding beneath, and in front of, the insect. 
