131 
o 
i>mlsen mellem begge disse Parti er er hos najrvmrende 
01 hi skai’pere raarkeret end hos de evrige Arter af Slaigten, 
1(, t en tydelig bemserkelig Indknibning skiller begge ad. 
Integuraenterne er raeget tynde og gjennemsigtige 
Sflnit ude11 nogen udpraeget Structur. 
Hovedet er stort og bredt, oventil jevnt hvadvet og 
1 hver Side udrandet for Insertionen af Eolerne. IMidten 
stijier Panden skraat nedad mellem Roden af lste Par F0- 
ei, ‘> uden at danne nogen tydelig Frontalproces, og for- 
11111 er sig her med det lialvmaaneforraige noget fremsprin- 
geiulo Epistom (se Pig. 4). 
lste Forkropssegment er kun lidet bredere end Ho- 
'fdet og kun forsynet med smaa og lidet fremspringende 
piinerer. De 3 folgende Segmenter er derimod bredere 
^ ' lar Epimererne mere pladeformige og jevnt afrundede. 
le disse 4 Segmenter er oventil paatvsers udhulede, idet 
^ aav ''l den forreste som bagerste Rand er noget ha?vet (se 
big. 2). 
He 3 bagerste Forkropssegmenter er betydelig stprre 
tilsammen omtrent lige lange som hele det forreste Parti 
af Eegemet. De er alls, i Modsmtning til hvad Tilfoldet 
61 dos e >ikelte andre Arter af Slaegten, tydeligt begrsend- 
fra hinanden og oventil staerkt hvmlvede saint viser 
angs ad Midten en grand Fin e, der til Siderne er begraendset 
a afrundede knudeformige Frcmspring. Paa dem alle er 
1 forreste Rand stmrkt buet og Sidedelene fortil gaaende 
Ud 1 et skarpt Hjorne. 
Bagkropssegmentet er ualmindelig stort og bredt, neppe 
Hindre end de 3 bagerste Segmenter tilsammen, skjoldtor- 
mod jevnt buede Sidekanter og bagtil i Midten ud- 
1 11 'k''t i et stumpt Fremspring, paa hvis I nderside Anal- 
aa ningen er beliggende (se Fig. 3 og 24). 
Dine mangier fuldstsendigt ligesom hos alle ovrige be- 
Jendte Former af denne Familie. 
lste. Par Folere (Fig. 5) udspringer fra den forreste 
at Hovedet og er adskilte ved et tydeligt Mellemrum, 
61 d;U) ner ligesom en Bro mellem Panden og Epistomet 
I * ^ *§• 1 og 4). De opnaar neppe mere end l/* af Total- 
® n gden og- bestaar af et 3-leddet Skaft og en mangeleddet 
^'obe. Skaftets lste Led er i hoi Grad udmmrket ved sin 
Hulelige Stomdse og ciendommclige, nsesten skjmldannede 
01 m. Dot ender fortil med et afrundet Fremspring og 
1 P aa sin ovre Flade naer Enden en Grube, bvori den 
| -''iide Del af Fplerne er ineget bevsegeligt indleddet. 
a lets 2 sidste Led er meget smaa og synes derfor sna- 
6r< a l udgjore den basale Del af selve Svoben. Denne 
Slna lt cylindrisk, smrdeles bpielig og sammensat af et 
* 01 1 Antal meget korte Led, der ved Roden er mindre 
) (, bgt adskilte. De baerer alle i den ene Kant gjennem- 
Mige baandformige Sandsevedhmng, der tilsammen danner 
11 Imt Ervn title langs ad Svoben. 
segments and the abdomen. The boundary between these 
regions is in the present form marked off much more 
sharply than in the other species of the genus, a distinctly 
perceptible instriction separating the two. 
The integuments are very thin, and translucent, as 
also without any prominent sculpturing. 
The head is large and broad, uniformly arched above, 
and on either side emarginate, for the insertion of the 
antennm. In the middle, the front protends obliquely down- 
ward, between the bases of the 1st pair of antennae, without 
forming any distinct frontal apophysis, and unites there 
with the lunate and somewhat projecting epistome (see 
fig. 4). 
The 1st segment is but little broader than the bead, 
and furnished only with small and very slightly projecting 
epimera. The 3 succeeding segments are, on the other 
hand, broader, and have the epimera more lamelliform, and 
uniformly rounded. These 4 segments are each of them 
transversely hollowed above, both the anterior and the 
posterior margins being somewhat raised (see fig. 2). 
The 3 posterior segments are considerably larger, and, 
taken together, about equal in length to the whole of the 
anterior section of the body. Contrary to what occurs 
with some species of the genus, they are distinctly defined 
from each other, and above very considerably arched, ex- 
hibiting, too, along the middle, a shallow groove, marked 
off along the sides by a rounded, tuberculiform projection. 
In each of them, the anterior margin is very arcuate, and 
the lateral parts jut forth anteriorly as an acute angle. 
The abdominal segment unusually large aud broad, 
and very little, if at all, smaller than the 3 posterior seg- 
ments taken together, is scutiform, with uniformly arched lat- 
eral margins, and posteriorly, in the middle, drawn out as 
an obtuse projection, on the’ under surface of which occurs 
the anal opening (see figs. 3 and 24). 
No trace whatever of eyes, as in all other known 
forms of this family. 
The 1st pair of antennae (fig. 5) originate 011 the 
foremost part of the head, separated one from the other 
by a distinct interspace, constituting, as it were, a bridge 
between the front and the epistome (see figs. 1 and 4). 
They attain scarcely one-fourth of the total length, and 
consist of a three-jointed peduncle and a multi-articulate 
flagellum. The 1st joint of the peduncle is strikingly char- 
acterized by its considerable size and very peculiar, almost 
squamiform shape. It terminates anteriorly in a rounded 
projection, and exhibits, on its upper surface, near the end. 
a small cavity, into which the remaining part of the an- 
tenna is very movably jointed. The 2 last joints of the 
peduncle are very small, and would, therefore, appear rather 
to constitute the basal part of the flagellum itself. The 
latter is slender-cylindric, exceedingly flexible, and composed 
of a large number of very small articulations, which, at the 
base are less distinctly separated. On one of the margins, 
they all bear translucent riband-shaped appendices, constituting 
together a thick fringe along the surface of the flagellum. 
& 17 * 
