183 
Bemgerkninger. Fra den typiske Art. Br. typica 
d'" 1 ', ' «r denne strax kjendelig ved den skarpt markerede 
'"sale Kjal me ,j s j ue j 10 j e sammentrykte Fortsatser, sarat 
1 ( de hagtii saugtakkede Sideplader paa 3die Bagkrops- 
Se gnient. 
Remarks. — From the typical species, Br. typica 
Boeck, this form may at once be distinguished by the 
sharply marked dorsal keel, with its high, compressed pro- 
jections, as also by the posteriorly serrate lateral plates 
on the 3rd abdominal segment. 
Beskrivelse. Legemet er (se PI. XV, Fig. 3) for- 
” sviskort og under smtsigt, samt af en noget kantet Form, 
Fpiniererne danner med Kropssiderne en tvdolig Vinkel. 
Integumenterne er uahnindelig taste og liaarde, kalk- 
^bge og viser overalt en tydelig punkteret Skulptur, der 
annes a f talrige smaa grubeforinige Fordybninger. 
Hovedet er meget stort og ligesom opsvulmet, oventil 
61 ^ h’iderne jevnt convext og fortil gaaende ud i et langt 
, b s l a dst, nedadboiet Pandehorn. Imellem dette og Hove- 
^ts forreste Sidekanter er en dyb og smal Indbugtning, 
'° ri Iste Par Folere er indleddede. Sidehjprnerne er 
>u ‘ c t afriuidede ellor naesten afstumpede. 
Langs ad Ryggon strsckkor sig en tydeligt markeret 
^J r) l. som paa de 4 bagerste Forkropssegmenter og de 3 
’ u-ste Bagkropssegmenter hsever sig til hoie, sammentrykte 
Ligmlrettede Fortsatser. Paa Forkroppen er disse Fort- 
, atsev Gn kle, medens der paa de 3 forreste til Bagkroppen 
'•’lemle Andes fortil en tilspidset Flig, hvorved disse Fort- 
‘'L(‘r her synes ligesom tvedelte. Kjolen fortsfetter sig 
( j bSaa del vis paa de 3 bagerste Segmeuter, der hvert ved 
' n bagre B,a.nd bar et tandformigt, opadrettet Froraspring ; 
Agnende Andes desuden i Midten af 4de Bagkropsseg- 
111 »ts Rygside. Af Forkropssegmentertie er de 3 forreste 
I Aorte og til Siderne begramdsede af noget Sformigt 
‘ncdo Suturer; de 4 folgende tiltager successivt noget i 
bagtil. 
Du 3 forreste Bagkropssegmenter er meget 
Paa 3die 
g° le ’ 11H 'd SEer deles brede og dybe Sideplader. 
^ e gment er den bagre Band af Sidepladerne i Midten noget 
1 IUs pvingende og delt i 5 strnrke opadrettede Saugtakker 
(se Fj is 
dolkf, 
l S- 3 i); do nedre Hjprner er udtrukne i en skarp 
tornhg Spids, der oventil er begncndset fra det oven- 
n talte saugtakkede Fremspring ved en halvmaaneformig 
Indbugtning. 
nientrjeno- 
Le 3 forreste Par Epimerer er meget smaa, tret sam- 
led e 
•engte og noget divergerende mod Enderne samt stil- 
y. n *sten lodrette, dannende mod Kropssiderne en tydelig 
( j 4de Par er lavere end de 2 foregaaende og i En- 
. 11 skraat afskaaret, mod et kort vinkelformigt Fremspring 
‘ ( n bagre Kant. Do 2 folgende Par har don bagre Lap 
1 *nget nedad i Form af en noget buet Fortsats. 
i , 0jne Andes ligesom hos den typiske Art intetsom- 
hel st 8p c V 
Jor. 
og 
Dte Par Folere er omtrent saa lange som Hovedet 
& . A forreste Segmenter tilsammen og af forholdsvis 
I ‘A Bygning. Skaftet er temmelig stterkt forlaenget, med 
s ( Led storst, de 2 folgende indbyrdes af ens Lsengde. 
Description. — The body (see PI. XV, Ag. 3) is 
comparatively short and thickset, and of a somewhat an- 
gular form, the epimera and the sides of the body forming 
together a distinct angle. 
The integuments are remarkably hard and Arm, cal- 
careous, exhibiting everywhere a distinct, dotted sculpture, 
produced by numerous minute fovea 1 depressions. 
The head is very large and, as it were, intumescent, 
above and at the sides evenly convex, running out in front 
as a long and acute, downward-bent rostrum. Between 
the latter and the anterior lateral margins of the head, 
extends a deep and narrow curved sinus. The lateral 
corners are broadly rounded, or almost obtuse. 
Along the back stretches a well-marked keel, which, 
on the 4 posterior thoracic segments and the 3 anterior 
abdominal segments, rises to high, compressed, and backward- 
directed projections. On the anterior division of the body, 
these projections are simple, whereas on the 3 anterior 
ones, belonging to the abdominal division, occurs anteriorly 
an acute lappet, giving to the said projections a well-nigh 
cleft appearance. Moreover, the keel is continued in part 
along the 3 posterior segments, each of which, on the 
posterior margin, has a dentiform, upward-turning, projec- 
tion; a similar projection is observed, too, springing from 
the middle of the dorsal side of the 4th abdominal seg- 
ment. Of the thoracic segments, the 3 anterior ones are 
very short, and limited at the sides by sutures, bent some- 
what in the form of the letter S; the 3 succeeding seg- 
ments increase slightly in length backwards. The 3 anterior 
abdominal segments are very large, with exceedingly broad 
and deep latera l plates. On the 3rd segment, the posterior 
margin of the lateral plates projects a little, and is di- 
vided into 5 strong, upward-directed teeth' (see Ag. 3*); the 
lower corners are drawn out as a sharp, mucroniform 
point, deAned above from the serrate projection by a 
crescent-shaped sinus. 
The 3 anterior pairs of epimera are exceedingly small, 
crowded together, and somewhat diverging toward the ex- 
tremities, moreover placed well-nigh perpendicular, and 
thus forming, with the sides of the body, a distinct angle. 
The 4th pair are lower than the 2 preceding ones, and 
obliquely truncate at the extremity, with a short angular 
projection springing from the posterior margin. The 2 
succeeding pairs have the posterior lobe prolonged down- 
ward in the form of a slightly arcuate projection. 
Qf e y 0 s — as in the typical species — no trace 
whatever. 
The 1st pair of antennae are about equal in length 
to the head and the 5 anterior segments taken together, 
as also comparatively slender in structure. The peduncle 
is considerably elongated, with the 1st joint largest and 
