86 
1 Midten ved en dyb Lamgdefure delt i 2 laterale Felter. 
Bagkroppen forholdsvis liden. oventil forsynet med en dob- 
belt Rad af korte Tsender ; Epiraererne tilspidsede og frem- 
ragende til Sideme. Intet Spor af 0ine. F 0 lerne korte. 
af ens Lsengde. Kindbakkerne inindre end saedvanlig, med 
en liden Afsats i den ydre Kant. Fodderne robuste, tset 
haarede og forsynede med grove tandi'ormige Knuder. Bag- 
kropslonnnerne med Endepladerne smale, uden Burster. Den 
midterste Haleplade sfcerkt indknebet bag Basis, med delvis 
tandede Kanter. Enden stumpt tilspidset. Sidevedbamgene 
med smaa delvis tandede Endeplader. Farven lrvidagtig 
med blaaligt Skjser. Lsengden indtil 12 mm . 
Larven (Praniza) af ssedvanlig Form med forholdsvis 
lidet triangulsert Hovedsegment uden Spor af 0ine. Klam- 
merfodderne endende med en usfedvanlig stserk og skarpt 
tilspidset Krog. Farven livid, uden Pigment. Laengden 
indtil 10™. 
Findesteder. Stat. 35, 40, 51, 240, 248, 295. 312. 
Bemserkninger. Nmrvau’ende auselige Art, den storste 
liidtil bekjendte af Slagten. er let kjendelig fra alle tidligere 
beskrevne Former ved sit afiange, stierkt piggcde Legerne, 
forholdsvis Idle Hovedsegment og den fuldstamdige Mangel 
af 0ine saavel bos den fuldt udviklede Han som hos Larven- 
Beskrivelse af Hannen. Legemet er (se PI. VIII, 
Fig. 1 og 2) i Sammenligning med de efvrige bekjendte 
Arter temmelig langstrakt, med den stor^te Brede neppe 
storre end l l, t af Lamgden, forpvrigt af den ssedvanlige stierkt 
nedtrykte Form, med Segmenterne adskilte ved dybe laterale 
Indsnit. 
Integumenterne er sterdeles haarde og rue af talrige 
Bigger eller Torner. som isser langs Sidekanterno af Lege- 
met er af betydelig StOrrelse. Paa visse Steder er de ogsaa 
tat besatte med lange fine Haar. 
Hovedet er betydelig smalere end den bagenfor lig- 
gende Del af Forkroppen og nsesten af pentagonal Form, 
bagtil convext, fortil i Midten concaveret og til liver Side 
forsynet med 2 tandede Kjole, hvoraf den ene indtager 
Sidekanterne og er afbrudt paa Midten. medens den anden 
begrsendser den fordybede trekantede Mundarea (se Fig. 3). 
Panderanden er i Midten temmelig stierkt fremspringende 
og til liver Side begrsendset af en tornformig, i den ene 
Kant tandet Fortsats (Supraorbitalfortsatsen). Lige bag 
Hovedet. imellem dette og Forkroppen, findes paa Rygsiden 
indskudt en smal halvmaaneformig Plade, der egentlig reprae- 
senterer Dorsaldelen af et sterskilt til Forkroppen hprende 
Segment, hvis Sterna ldele dog ganslce er sammensmeltede 
med Hovedet (se Fig. 3). 
Af tydeligt udviklede frie Forkropssegmenter findes 
som hos Slaegtens Ovrige Arter tilsyneladende kun 5. De 
2 forste af disse er ganske korte. med staerkt udstaaende, 
i Enden afstumpede og grovt tandede Epimerer. 3die Seg- 
ment er betydelig storre end disse, med den bagre Rand i 
Midten noget udbuet og de bagre Sidehjorner ligesom paa de 
segment largest: above, divided in the middle, by a deep 
longitudinal sulcus, into 2 lateral areas. Abdomen com- 
paratively small, furnished above with a double row of short 
teeth: epimera pointed, and projecting toward the sides. 
Xo trace of eyes. Antennae short and of one length. 
Mandibles smaller than usual, with a minute projection on 
the outer margin. Legs robust in structure, densely clothed 
with hair, and furnished with coarse, dentiform protuber- 
ances. Terminal plates of pleopoda narrow, and without 
bristles. Median caudal plate very considerably districted 
behind the base, and with partially dentate margins, ex- 
tremity obtusely pointed. Colour whitish, with a tinge of 
blue. Length reaching 12™. 
Larva (Praniza.) of the usual form, with a comparatively 
small, triangular cephalic segment, exhibiting no trace of 
eyes. Prehensile legs, terminating in a remarkably strong 
and acutely pointed hook. Colour white, without pigment. 
Length reaching 10”"”. 
Locality. — Stats. 35, 40, 51. 240, 248, 295. 312. 
Remarks. — The present species, the largest hitherto 
obtained of the genus, may be readily distinguished from 
all other described forms by its oblong and excessively 
spiky body, the comparatively small cephalic segment, and 
the total absence of eyes, alike in the fully developed male 
and in the larva. 
Description of the Male. — The body (see PI. VIII, 
figs. 1, 2) is, when compared with the other known species, 
considerably elongate, its greatest breadth scarcely exceed- 
ing one-third of the length; for the rest, it exhibits the 
usual greatly depressed form, and has the segments separated 
by deep incisions. 
The integuments are exceedingly hard and rough, a 
result of the numerous spikes or spines, which, more especially 
along the lateral margins of the body, are of considerable 
size. In certain places, they are also densely covered with 
long, delicate hairs. 
The head is much narrower than any of the succeeding 
segments, and almost pentagonal in form, posteriorly convex, 
anteriorly, in the middle, concave, and on either side fur- 
nished with 2 dentate carinse; of which the one, that occupy- 
ing the lateral margins, is disrupted in the middle, while 
the other bounds the depressed, triangular buccal area (see 
fig. 3). The frontal border projects considerably in the 
middle, and is bounded on either side by a spiniform. along 
one of its margins dentate projection (the supraorbital pro- 
jection). Immediately posterior to the head, between that 
part and the first free segment, occurs, inserted on the 
dorsal side, a narrow lunate plate, that, strictly, represents 
the dorsal section of a separate segment belonging to the 
anterior division of the body, the sternal parts of which 
are, however, wholly connate with the head (see fig. 3). 
Of distinctly developed free segments belonging to 
the anterior division, occur, as in the other species of the 
genus, apparently but 5. The 2 first are quite short, with 
strongly projecting epimera, obtuse at the extremity and 
coarsely dentate. The 3rd segment is considerably larger 
than the preceding, with the posterior margin somewhat 
