THE SCALE INSECT GENUS ASTEROLECANITJM 75 



Apex of abdomen : Notch present ; setae, apical 81 ix long, interapical 11 p. long, 

 dorsal 3 fi long, intermediate ventral 2.5 fi long, outer ventral 4 /m long; anal 

 ring with 4 setae about 21.6 ^ long and 2 setae about 25 fi long, also with an 

 inner row of 6 and an outer row of 12 pores, divided on dorsal side and tending 

 toward division on ventral. 



Data. — Redescribed from the following mounted paratype material 

 collected by G. F. Ferris in Lower California : One female on Solanum 

 hindnanian, East of Rosario; 1 female and 6 larvae on Jatropha 

 canesceiis, San Antonio, 1919; 2 females on Gelosia ftoribwnda, ban 

 Bartolo, July 17, 1919 ; and 2 females on Heteromeles arbutifolia, La 

 Laguna, August 1919. 



This species is closely related to townsendi, but differs from it in 

 being much smaller, in having an interrupted row of marginal quin- 

 quelocular pores, 20 to 27 instead of 35 to 55 quinquelocular pores in 

 each spiracular band, 88 to 98 instead of about 271 multilocular pores, 

 and fewer submarginal 8-shaped pores. 



In the specimens at hand there is no indication of the small, densely 

 sclerotized area outside the outer ventral seta shown in the illustration 

 accompanying the original description (S3, p. ? '3), and the inner ventral 

 seta is not shown on that illustration. Tests examined by the writer 

 were too poor to permit a complete redescription. 



ASTEROLECANIUM DEGENERATUM, new Species 



(Fig. 18, A-J ; pi. 9, U) 



Habit. — Living on leaves. 



Test of female. — Longer than wide, posterior end narrowed and produced ; 

 0.95-1.10 mm. long, 0.65 wide; flat dorsally and ventrally; pale greenish or 

 brownish yellow, transparent, slightly punctate; marginal filaments nearly same 

 color as test, or whitish, slightly longer at ends of body than elsewhere; 

 elliptical larval exit in margin. 



Adult female. — Same shape as test, 0.85-1 mm. long, 0.6 wide. 



Margin : 8-shaped pores in a single row interrupted for 4-10 pores near 

 posterior end but continued across apex of abdomen, 8 or 10 pores across apex 

 between interruptions ; anterior and posterior pores 8-9 /u long and 5 wide, lateral 

 pores usually 7 fi long and 4 wide, the width to the length of a pore apart ; the 

 size and distribution of the pores varying considerably, however, owing to 

 growth against hairs, or irregularities on the surface of the leaf ; trilocular pores 

 in a single row terminating at or near interruption in marginal 8-shaped pores, 

 1 trilocular pore to about every 4 8-shaped pores near posterior end, becoming more 

 numerous cephalad (rarely lacking at anterior end), usually lacking or reduced 

 in number where 8-shaped pores drop out or are reduced in size. 



Dorsal surface: Minute 8-shaped pores rather sparse; disk pores sparse, a 

 few near margin ; tubular ducts about 22 n long. 



Ventral surface; Antenna roughly circular, with 2 setae as long as. and 1 

 shorter than, diameter of antenna; beak with 2 pairs of setae; spiracle with 

 bar expanded at inner end, atrium enlarged, bag-shaped, and containing 5-S 

 quinquelocular pores, 5-17 similar pores in a single or double row. extending 

 from spiracle to body margin ; multilocular pores in 2 indefinite rows of 2 or 3 

 pores each, slightly larger than trilocular pores, loculi 5 in number when deter- 

 minable; a group of 4-14 dark-rimmed 8-shaped pores each side of beak, a few 

 smaller pores scattered in lateral area, and a few in 3 or 4 rather indefinite 

 transverse rows posterior to beak; submarginal 8-shaped pores in a single row 

 terminating at interruption in row of marginal 8-shaped pores, about half as 

 numerous as corresponding marginal 8-shaped pores; submarginal setae in a 

 complete row terminating near posterior end of interruption in row of marginal 

 8-shaped pores; 1 pair of setae posterior to multilocular pores, 1 pair In each row 

 of those pores, and 1 pair in posterior row and also in penultimate row of dark- 

 rimmed 8-shaped pores. 



Apex of abdomen: Setae, apical 9 ,u long, interapical 4 ,u long, outer ventral 3 

 m long; anal opening in dorsal surface at the body margin between buses of 

 interapical setae, very inconspicuous, elliptical, margin o( opening membranous: 



