1246 
EURYPHRISSA; MYRSILA; ALCATHOE. By B. Zukowsky. 
apiformis. 
plumipes. 
syngenica. 
auripennis. 
caudata. 
a small anal tuft, tibiae thickly covered with short hair, femora and tarsi hairless. Tongue absent. Forewing 
with stalked veins 7 and 8. Hindwing: veins 4 and 5 from the angle of the cell or from a very short stalk, 
discocellular vein very oblique. Type: A. apiformis Cl. from Europe. 
A. apiformis Cl. (= vespiformis Hufn., crabroniformis Den. A Sell.) (Vol. II, pi. 51 a). Head and palpi 
lemon-coloured. Antennae black above, reddish yellow beneath. Thorax brown, in front with a large yellow 
spot on each side, behind with a smaller diffuse spot. Abdomen with very broad yellow bands on the anterior 
margins of the segments, the last 2 quite yellow, segments 1 and 3 brown. Legs dark yellow with brown. Fore¬ 
wing transparent with narrow brown margins and discal mark, hindwing the same. 30—45 mm. United States 
to the west as far as Nevada; Europe-Siberia. Larva in the lower parts and roots of older poplars and willows, 
living two years. Imago in June and July. Not common in America, contrary to the Old World where it is 
rather common. It can no more be ascertained whether the insect is autochthonous for America or was im¬ 
ported from Europe. 
22. Genus: Euryplirissa Btlr. 
Hindwing and abdomen broader than in Synanthedon , the second pair of legs densely covered with long 
scales, but scantily haired, with two robust, long, divergent terminal spurs. The hind legs are rather short, 
tibiae densely covered with long scales, prolonged beyond the middle at the outer margin with a broad hair¬ 
brush of 2 mm length, two long central and two shorter terminal spurs. Type: E. plumipes Wkr. 
E. plumipes Wkr. deep black, strong, blackish purple beneath. Face white. Palpi erect, silvery 
white, black apically. Antennae slender dingy ochreous below. Abdomen more than twice as long as the thorax, 
narrowing down towards the end. Legs short, strong, with blue or purple scales, hind tibiae fringed black, 
decorated with a very dense hair-tuft of a pale yellow colour at the end, tarsi golden yellow. Wings trans¬ 
parent, fringes purple. Forewing with a dingy dark yellow inner margin, the costa and cross-vein purple. 
18—20 mm. Ega. 
E. syngenica sp. n. (178 i). Size and total habitus like that of plumipes Wkr. Head black, palpi yellow, 
darker apically. Antennae shorter with thicker clubs than in plumipes, yellowish brown. Thorax blackish blue 
with a yellow dorsal line and two lateral ones, metathorax with yellowish hair. Abdomen blackish blue, the 
posterior margins of all the segments more or less finely margined with yellow, beneath all is yellow except 
the 3rd and 4th segments remaining black. Legs predominantly yellow, the hair of the posterior tarsi black, 
not so prominently tuft-like as in plumipes. Wings as in plumipes. Brazil (Rio Grande do Sul) and Peru (Pebas). 
2 Types: Berlin Zool. Museum. 
23. Genus: Ulyrsila Bsd. 
Antennae filiform, without the least thickening at the end. Palpi long, bare, very pointed. Proboscis 
small and short. Legs very long with long and strong spurs. Abdomen pointed like that of a Pompilida. 
Wings long and stretched with little developed fringes. 
M. auripennis Bsd. (178 i). Head, palpi and antennae of a bright black colour. Thorax pale rust-coloured 
turning blackish. Anterior part of abdomen pale red, posterior part black, without a reflection. Hindwing 
dotted white on the fringe. Legs black, anterior part of the hind tibiae pale reddish orange. Beneath more 
pale red. 24 mm. Brazil: Para, Amazons. 
24. Genus: Alcathoe Hy. Edw. 
Palpi rather erect, as far as the height of the head, 2nd joint very long, 3rd joint very short. Antennae 
uniform, tapering at the end, slightly dentate in the <$, plain in the $. Posterior tibiae with a hair-tuft at each 
end and a similar tuft at the base of the tarsi, near the tibiae. Forelegs and middle legs without hair-tufts. 
Abdomen of A with a long tail-like hairy appendage dividing the anal tuft. Tongue present, but feebly deve¬ 
loped. Forewing with 12 veins, 7 and 8 stalked. Hindwing: vein 2 from the cell, 4 and 5 on a short stalk, 
7 and 8 coalescent, discal vein straight. Type: A. caudata Harris. 
A. caudata Harris (= cordata Ril. <£■ How.) (179 a). : head black, face dull reddish. Palpi, collar and 
antennae orange. Thorax violet or dark brown. Abdomen black with a violet reflection, orange below. Anal 
tuft black, the tail-like appendage bright orange. Legs orange, middle and hind femora black like the ends 
of the hair-tufts at the end of the tibiae. Forewing violet, transparent from the base almost to the centre, discal 
vein sometimes slightly dusted orange. Hindwing transparent with an intense reflection, the discal mark, the 
very narrow distal margin and the fringe violettish black. $: head black, palpi and collar orange. Thorax and 
abdomen above and beneath black. Forewing violet, blackish at the base. Forelegs orange, coxae black, middle 
