176 
De bagre Foi’krops- og forreste Bagkropssegmenter er oventil 
skarpt afsatte fra hinanden, uden dog at vise nogen egentlig 
Kjol eller dorsale Fortsatser. 
Hovedet er forholdsvis lidet og gaar fortil ud i et 
ganske kort, noget bqiet Pandehorn. Sidelapperne ertyde- 
ligt vinklede. 
De 4 forreste Par Epimerer er teininelig store, be- 
tydelig hoiere end selve Kroppen og noget skraat fortil- 
rettede. De tiltage successivt noget i Storrelse, og 4de Par 
ender bagtil i et vinkelformigt Fremspring. 
De 3 forreste Bagkropssegmenters Sideplader er for- 
holdsvis store; de paa 3die Segment danner bagtil en 
nsesten ret Vinkel. 
0inene er smalt ovale eller nsesten nyreformige og 
beliggende mer den forreste Rand af Hovedet; deres Pig- 
ment er af brunlig Farve. 
lste Par Folere er staerkt forliengede, ikke meget 
kort ere end hele Legemet, og har Skaftets lste Led lsen- 
gere end de 2 folgende tilsammen. Svoben er over dobbelt 
saa lang som Skaftet og sammensat af talrige korte Led. 
2det Par Folere er neppe halvt saa lange som lste 
Par og har Svoben omtrent af Skaftets Lsengde. 
Kmdbakkeme (Fig. 6 a) udmaerker sig ved den be- 
tydelige Storrelse af Palpen, hvis sidste Led er lige saa 
langt som de 2 ovrige tilsammen. sammentrykt, leformigt 
og i den ene Kant tad borstebesat, 
lste Par Kj sever (Fig. 6 b) er meget smaa og har 
Basalpladen af bredt oval Form saint forsynet med 2 korte 
Fjaerborster. 
lste Fodpar (Fig. 6 c) er forholdsvis lidet og svagt 
bygget. med Haanden temmelig smal og neppe lamgere end 
det foregaaende Led. 
2det Fodpar (Fig. 6 d) er derimod kraftigt udviklet 
og har Haanden meget stor og udvidet mod Enden, med 
Griberanden noget skraa og bevasbnet til hver Side med 4 
stserke Tomer. 
De ovrige Fodpar er alle omtrent af ens Lamgde og 
temmelig robnste, skjondt paa langt na>r ikke i den Grad 
som hos A. latipes. De 3 sidste Par har Hofteleddet tem- 
melig bredt og pladeformigt, af regehmessig oval Form. 
Halefodde rne aftager successivt i La?ngde bagtil, saa 
at de tilbagestrakte omtrent naar til samme Tvaerlinie, og 
har alle den ydre Gren betydelig kortere end den indre. 
Sidste Par afviger kun fra de ovrige derved, at Basaldelen 
er forholdsvis kortere og tykkere (se Fig. fi e). 
Halevedhsnget ( ibid .) er forholdsvis lidet og simpelt 
tilrundet i Enden, uden Burster eller Tomer. 
Dyret er i levende Tilstand af gulhvid Farve og over- 
alt taet bestroet med meget smaa rode Punkter. 
The posterior thoracic and anterior abdominal segments are 
sharply defined above, one from the other, without however 
exhibiting any true keel or dorsal projection. 
The head is comparatively small, and exhibits an- 
teriorly a very short, somewhat curved rostrum. Lateral 
lobes distinctly angular. 
The 4 anterior pairs of epimera rather large, exceed- 
ing considerably in height the body itself, and directed 
somewhat obliquely forward. They increase, to a slight 
extent, successively in sizej and the 4th pair terminates 
posteriorly with an angular projection. 
The 3 anterior lateral plates of the abdominal seg- 
ments arc comparatively large ; those on the 3rd segment 
form posteriorly almost a right angle. 
The eyes, narrowly oval, or almost reniform, are placed 
in close proximity to the anterior margin of the head; their 
pigment is of a brownish colour. 
The 1st pair of antennae are very elongate, but little 
shorter than the whole body, and have the 1st joint of 
the peduncle greater in length than the 2 succeeding ones 
taken together. The flagellum is more than twice as long 
as the peduncle, and composed of numerous short articula- 
tions. 
The 2nd pair of antennae are scarcely half as long 
as the 1st, and have the flagellum and peduncle about equal 
in length. 
The mandibles (fig. fl a) are characterized by the 
very considerable size of the palp, which has the last ar- 
ticulation as long as the 2 others taken together; it is com- 
pressed, falciform, and has one of the margins closely beset 
with bristles. 
The 1st pair of maxilla; (fig. 6 b) are very small, and 
have the basal plate of a broad, oval form, as also furnished 
with 2 short plumous bristles. 
The 1 st pair of legs (fig. 6 r) are comparatively small 
and feeble in structure, with the hand rather narrow and 
but very little longer than the preceding articulation. 
The 2nd pair of legs (fig. 6 d), on the other hand, 
are powerfully developed, and have the hand very large and 
dilated toward the extremity, with the palmar margin 
somewhat oblique and armed on either side with 4 strong 
spines. 
The remaining pairs of legs are all about uniform in 
length, and rather robust, though by no means to the same 
extent as in A. latipes. The 3 posterior pairs have the 
basal joint rather broad, and lamelliform, as also of a 
regular oval shape. 
The caudal stylets diminish successively in length 
posteriorly, and hence, when stretched backwards, reach 
very nearly to the same transverse line; all have the outer 
branch much shorter than the inner. The last pair differ 
from the rest merely in the basal part being comparatively 
shorter and thicker (see fig. 6 e). 
The telson (ibid.) is comparatively small, and simple 
rounded at the extremity, without either bristles or spines. 
In a living state, the animal is of a yellowish-white 
colour, everywhere closely specked with minute red points. 
