1969] 
Beardsley — Fossil Scale Insect 
273 
membranous area. Mesosternum elongate, convex below, and rather 
strongly displaced posteriorly in relation to the tergites so that the 
mesopleurites are noticeably more inclined than in most other male 
Coccoidea. Sclerites of pro- and metathorax greatly reduced, as in 
other male Coccoidea. Two pairs of thoracic spiracular peritremes 
present. 
Abdomen relatively elongate, slender; with eight discernible pre- 
genital segments which become progressively narrower posteriorly. 
Apex of abdomen bearing a moderately elongate, apically acute, 
sclerotized penial sheath with a slit-like ventral opening. Structure 
of aedeagus not determined. Dorsal abdominal tubular duct clusters 
or lateral pore pockets apparently absent. Abdominal spiracles not 
discernible. 
Type of genus: Electrococcus canadensis , n. sp. 
Electrococcus canadensis, n. sp. (figures 1-8) 
Length of specimen, excluding antennae 1.3 mm; length of fore- 
wing 0.9 mm. 
Head distinctly separated from thorax by a markedly constricted 
neck region ; lateral areas of epicranium occupied by pair of large 
ocular sclerites (os), each bearing an arcuate dorsoventral row of 
5 simple eyes (se) anteriorly plus a single smaller larval eye (le) 
or stemma laterally; posterior margin of ocular sclerite thickened 
to form a postocular ridge (pocr), anterior margin of ocular sclerite 
slightly thickened above and below articulation point of antennal 
scape. Ocular sclerites broadly separated dorsally; dorsum of head 
with a definite dorsomedial sclerite (dmep) the anterior portion of 
which is strongly sclerotized, the posterior portion much less distinctly 
so; posterior margin of dorsomedial sclerite marked by a thickened 
postoccipital ridge (pos) which does not extend laterally to the 
ocular sclerites. Dorsomedial plate narrowed anteriorly, extending 
ventrally between antennae and onto venter of head as a narrow 
midcranial ridge (mcr), as far as the anterior margin of the ven- 
tromedial plate (vmep) below. Ventromedial plate approximately in 
form of equilateral triangle. A narrow bar-like median longitudinal 
sclerite of unknown relationship (possibly a cranial apophysis) on 
posterior portion of venter of head behind torn area. Antennae 
(fig. 4) about 0.54 mm. long; scape (sc) largely membranous except 
for longitidinal ridge-like thickening on inner face; pedicel and 
flagellar segments strongly sclerotized, pedicel (pd) large ? trumpet- 
shaped; flagellar segments bearing a few scattered slender setae, and 
