
56 RECORDS OF THE S.A. MUSEUM 
second antenna has an elongate second segment, a very short third segment and 
a moderately long end segment bearing four long spines and two setae. The man- 
dible and maxillule were not seen; the maxilla and maxilliped resemble those of 
gracilis Claus as shown by Sars (1917, pl. xciii). The swimming legs have the fol- 
lowing seta formula: 
endopod. exopod. 
pl. 1,1,321. 0,1,323. 
p.2. 1.2.321. 0.1.423. 
p.3, 1,2.221. 0.1423. 
p.4. 020. 01,422, 
The one-segmented fourth endopod has two unequal terminal spines; the fifth legs 
are immobile rounded knobs, tipped with two setae, typical for the genus, 
Male unknown. 
This species approaches most closely to Gurney’s species mucronatus, from 
which it differs in a number of points: the body is more slender, the thorax is 
without hooks, and the fourth somite is distinct and not overlapped by the third; 
the genital sezment is longer than wide, the caudal rami are not more than two- 
and-one-half times as long as wide and the terminal setae are distinetly longer than 
the urosome; the first antenna is nearly as long as the cephalosome; the third and 
fourth segments of the second antenna are quite unequal and the end segment 
bears four setiform claws; the endopod of the fourth leg is distinctly notched and 
the fifth leg bears only two setae. 
MONSTRILLOIDA. 
Famity MONSTRILLIDAE. 
Genus MonstrrinuA Dana 1848 
Sars, 1921a, p. 10. 
There are some twenty-one species of Monstrilla which have been described ; 
of these I have been unable to compare this species with the descriptions of cana- 
densis MeMurrich 1917, conjunctiva Giesbrecht 1902, intermedia Aurivillius 1898, 
longispinosa Bourne 1890, ostrowmowi Karaviev 1895, and wandelti Stephensen 
1913. It appears in the structure of the fifth leg to approach most closely to 
mista T. Scott 1914, but differs in having only two setae instead of three here, and 
further, in the much shorter length of the setiform appendage on the genital seg- 
ment and in the first antenna; the shape of the cephalic segment is also different. 
Scott compares his form with Giesbrecht’s conjunctiva, described from a male, 
but this is one of those species with which I have been unable to make any com- 
parison. The probability is that it is an undescribed species, but with so many 
descriptions unavailable I hesitate to name this as a new species. 
Monstriuua sp. 
Occurrence. III, 2 females (1 damaged) ; length 3-38 mm. 
NOTODELPHYOIDA. 
Sars divides this sub-order into seven families, the last of which is the mono- 
typic Anomopsyllidae. This family is included in the sub-order only provisionally 
by Sars, owing to the extraordinary reduction of the appendages. Its chief affi- 
nities with the Notodelphyoida lie in the manner in which the eggs are carried in 
a dorsal brood pouch. The single member of this sub-order found in this collec- 
tion would appear to belong to this family, but it is quite distinct from the only 
