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imparted to the liquid. The species is less prevalent than either of the 
other two, presumably on account of an extensive parasitism. 
Morphological characteristics.—About twice as long as wide, legs and 
antennae well developed; i. e., fairly long and thick. Antennae seven or 
eight segmented, apical segment the longest, one and two stout, second 
next to apical segment in length and considerably longer than first, though 
scarcely more than half as wide; third shorter and narrower; fifth, sixth, 
and seventh (or fifth and sixth in seven-segmented specimens) subequal, 
fourth smaller. Anal lobes and anal ring fairly well developed. Six pairs 
of cerarii at the caudal end of body, only the anal lobe pair well devel- 
oped, the others decreasing in size as they progress toward anterior end 
of body, and all without chitinizations, but with triangular pores grouped 
about them fairly closely and accompanied by auxiliary setae. A triangular 
chitinization (weakly developed in some specimens) on the ventral side of 
the anal lobe. Anal lobe setae long and fairly stout, somewhat longer and 
stouter than the anal ring setae. Derm with many triangular pores, small 
tubular ducts without raised rim about the mouth, and large numbers of 
multilocular pores, particularly at caudal end of body. Dorsal body setae 
fairly numerous, particularly so on the head. 
Authentication. Authenticated by Ferris, who has examined 
specimens sent to Green by Maskell himself. 
The species heretofore passing under the name of Pseudo- 
coccus lounsburyi is a pest on lily bulbs, and affects to some 
extent the growing plants. It would be of considerable impor- 
tance economically if lilies were more extensively cultivated here 
than they are. Brain’s description and figures of the insect 
(loc. cit.) are ample. I have, however, figured the anal lobe 
cerarii of this and the grass-infesting species, imsularis, to illus- 
trate morphological distinctions referred to in the following key. 
KEY TO SPECIES OF TRIONYMUS. 
1. Form short oval, width, considerably more than half the length (on 
TLGETAG NOS EHTGh AMD) ES Aci os OOS Oba OU a0 SoD ano MD Eo pumice Obie sacchari 
Slenderer, width hardly more than half the length...............- 2 
bo 
. 
With six pairs of cerarii on the six posterior abdominal segments 
(Gin: SLISENP RID) As Bhai do Co atlop od pd Cabo gee me or paodoe calceolariae 
With only one or two pairs of cerarii on the ultimate or ultimate 
and penultimate segments ..........-------ess secs e ence ceeees 3 
3. With two pairs of cerarii and numerous wax pores (about twenty- 
five) closely grouped around cerarian spines on anal lobe (on lilies). 
lounsburyi 
With only one pair of cerarii, the anal lobe pair, wax pores around 
the cerarian spines fewer, not more than twelve, and less closely 
placed. (ony) Bermuda: STAags))) . cis cee ee cee eee oe insularis 
