(aleurodicus) aleyrodes asarumis. 45 
We have seen no example of this species. Material in the bureau 
collection supposed to be cmonce, on careful scrutiny, does not fairly 
conform to the original and rather indefinite description. So far 
as we are aware anonce has not been rediscovered since it was de- 
scribed. Following is the original description: 
Larva. Oval, depressed, ochreous. Longest diameter 1.25 mm. Antennae ap- 
parently only 2-jointed, the second long and lateral, infundibuliform, compound 
spinnerets on each side, and posterior to these, two more simply constructed 
and smaller secret-glands on one side, also one on each side anterior to the first 
pair of legs. Labium one-jointed, prolonged. Labrum quadrilateral. Mandi- 
bular organs short, with the maxillary setse long and fine (PL I [X], fig. 2.) 
Anus large, with long framework of colon easily distinguishable. 
S and $ adult. Length 2.25 mm. Antennae long, 7-jointed; basal joint short; 
second longer; third very long; fourth and fifth subequal; sixth and seventh 
shorter. Legs long; the posterior pair considerably longer than the others. 
Tarsus 2-jointed; in the posterior pair of legs the first joint of the tarsus is 
the longest, in the others equal. Two claws. Tibia and tarsus pinnate. One 
stout spine at junction of coxa with trochanter. Several small stout spines at 
junction of tibia and tarsus. Head inserted. Mesonotum chitinous, well de- 
veloped. Scutellum, a pair of pyriform plates. Wings white, ample, broad ; an- 
terior incumbent, length 3 mm. ; posterior, length 2 mm. (PI. I [X]. fig. 3) ; strong 
central nervure bifurcated near the apex; branch nervure proceeding from 
the base of the central nervure. Genital organs of female bivalvular, and be- 
tween the halves is situated the ovipositor (PI. I [X], fig. 7). In the male the 
valvular organs are modified in the form of forceps, between which lies the 
penis (PL X, fig. 4). On the last segment of both sexes are two external 
processes. 
Habitat: Anona muricata and Richardia pacified, Deinerara. 
(Aleurodicus) Aleyrodes asarumis Shimer. 
Aleyrodes asarumis Shinier, Trans. Amer. Ent. Soc, vol. 1, p. 281 (1867). 
Aleurodicus asarumis Riley and Howard, Insect Life, vol. 5. p. 219 (1893). 
Aleyrodes actew Britton, Ent. News, vol. 10, p. 65, pi. 4 (1905). 
This species was described as an Aleyrodes by Dr. Shimer. It 
was later transferred to Aleurodicus by Riley and Howard in Insect 
Life, Volume V. page 219, apparently without an examination of the 
form, and this placing has been followed by all subsequent writers. 
In Canada it occurs in large numbers on the underside of the leaves 
of the wild ginger and the cohosh, the plants from which Shimer 
described it. An examination of specimens, both of pupa and adults, 
collected by Prof. T. D. Jarvis, show the species to be an Aleyrodes 
and not an Aleurodicus. This we would expect, for all known forms 
of the genus Alevrodicus inhabit the warmer regions. Following 
Eiley and Howard, Dr. Britton considered Shimer's species an 
Aleurodicus and redescribed and figured the form from the same 
plant under the name of Aleyrodes actece, in Entomological ¥ews, 
March 1905. His excellent description and figures can now be trans- 
ferred to Shimer's species and finally settle the standing of asarumis. 
