96 
Spidsen. Folerne smale, kort haarede. 2det Led betydelig 
Isengere, men smalere end 3die ; dette noget laengere end 
de 2 ydre Led tilsammen; sidste Led meget lidet, ovalt. 
De falske Fodder hos Hannen omtrent 1 / 4 kengere end 
Legemet, Endedelen saa lang som ote Led, iiandtornerne 
forholdsvis smaa, smalt lancetformige og grovt saugtakkede 
i Kanterne. Gangfodderne stserkt forlsengede, n test m i 5 
Gange lmngere end Legemet, men temmelig robuste og 
kun lidet afsmalnende mod Enden, 2det Laegled mere end 
3 Gange kengere end dot terminate Afsnit, Tarsal- og 
Fodled omtrent af ens Ltengde, begge nalmindelig kraftige, 
det sidste med 6 — 8 standee Torner i Inderkanten; Ende- 
kloen omtrent halvt saa lang som Fodleddet, temmelig 
stserk; Bikloerne vel udviklede, nsesten lialvt saa lange 
som Kloen. Legemets Ltengde 12”; Spandvidde 117"”". 
Bemaerkninger. Den mest ioinefaldende Character 
far nservserende Art er de eiendommelige Fremspring paa 
Kroppens Rygside, hvortil intet Spor Andes hos nogen 
anden bekjendt Art af Skegten. Ogsaa i Acre andre Hen- 
seender skiller den sig kjendeligt fra de i det foregaaende 
beskrevne Arter. hvorimod den i sine anatomiske Detailler 
idethele slutter sig meget nter til folgende Art. 
Beskrivelse. Legemets Lsengde naar op til 12”"" 
med en Spandvidde af 117™”, og den hprer saaledes til 
de stprste Arter af Slsegten. 
Formen maa (se PI. X, Fig. 2) vistnok idethele 
kaldes simekkor, men dog paa langt nter ikke i den Grad 
som hos enkelte af de i det foregaaende omtalte Arter, 
og navnlig har Gangfodderne, omend af betydelig Ltengde, 
et umiskjendelig robust Prteg. Selve Ivroppen viser, seet 
ovenfra (Fig. 2 a), den saedvanlige cylindriske Form, og 
har Sidefortsatserne temmelig store, og tykke samt slcilte 
ved vel marlcerede Mellemrum. Sees Kroppen fra Siden 
(Fig. 2 b), fremtrteder imidlertid en for nservserende Art 
meget udmserkende Character, idet ethvert af de 3 forreste 
Segmenter bagtil sees at hseve sig til et temmelig licit, 
skarpt tilspidset og noget bagndrettet Fremspring. Ryggen 
faar hewed et eiendommeligt, ligesom saugtakket TJdseende; 
deraf Artsbetegnelsen. Hovedsegmentet er omtrent saa 
langt som de 3 folgende Segmenter tilsammen og har en 
vel markeret, skjondt ikke meget forlsenget Hals; Pande- 
delen er kun meget lidet udvidet og nejipe synderlig bredere 
end de midterste Kropssegmenter. 
Gieknuden (Fig. 2 c) er noget ophpiet, af stump 
konisk Form og lidt bagudrettet, med Lindserne af mid- 
delmaadig Storrelse og beliggende omtrent ved Midten af 
0ieknudens Hoide. 
Snabelen (se Fig. b) er forholdsvis stor og tyk, om- 
trent af Hovedsegmentets Lsengde, og af den ssedvanlige 
cylindriske Form, dog lidt afsmalnende i sit .ydre Parti. 
incurvate at the points. Palpi narrow, short-ciliate, 2nd 
joint considerably longer, but narrower than the 3rd; the 
latter somewhat longer than the 2 outer joints taken together; 
last joint very small, oval. False legs in the male about 
one-fourth longer than the body, terminal part as long 
as the nth joint, marginal spines comparatively small, 
narrow-lanceolate, and coarsely serrated on the edges. 
Ambulatory legs much elongated, almost 5 times longer 
than the body but rather robust, and tapering but slightly 
towards the end, 2nd tibia! joint more than 3 times 
longer than the terminal section, tarsal and propodal 
joints about same length, both uncommonly powerful, 
the latter with 6 — 8 strong spines on the inner edge ; 
terminal claw about half as long as the propodal joint, 
rather powerful; auxiliary claws well developed, almost 
half as long as the claw itself. Length of body 12™ m ; 
extent 117”"". 
Remarks. The most conspicuous character of the 
present species is, the peculiar projections on the dorsal 
surface of the. body, of which not a trace is observed in any 
of the other known species of the genus. Also in several 
other respects it is perceptibly distinguished from all the 
previously described species, whereas, in its anatomical 
details it approximates, on the whole, very closely to the 
following form. 
Description. The length of the body reaches as 
much as 12"'*", with an extent of 117”"”, and the animal 
pertains, therefore, to the largest species of the genus. 
The form (PI. X, fig. 2) must certainly, on the whole, 
be described as slender, though not nearly to the extent 
characterising divers of the species described above; fin 
particular, the ambulatory legs, though of considerable length, 
exhibit an unmistakeably robust appearance. The trunk 
itself, when viewed from above (fig. 2 a), exhibits the usual 
cylindrical form, and has the lateral processes rather large 
and thick, as well as separated by well marked intervals. 
On viewing the trunk from the side (fig. 2 b), however, 
a character prominently distinctive of this species appears, 
as each of the 3 foremost segments, behind, are seen to 
rise into a rather high, sharply acuminated and somewhat 
posteriorly directed projection. The back thus acquires a 
peculiar, as it were, serrated appearance; hence the specific 
designation. The cephalic segment is about as long as 
the 3 following segments taken together, and has a well 
marked, though not very elongated neck; the frontal part 
is but very little expanded and hardly at all broader than 
the medial segments of the trunk. 
The oculiferous tubercle (fig. 2 c) is somewhat elev- 
ated, of obtuse conical form, and directed a little back- 
wards, with the lenses of moderate size and placed about 
mid-way up the tubercle. 
The proboscis (fig. 2 b) is comparatively large and 
thick, about as long as the cephalic segment and of the 
usual cylindrical form, though tapering slightly in its outer 
part. 
