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295 
ing swollen orbital hoods; without trace of 
ocular teeth; pterygostomial tooth produced and 
acute. 
Basal articles of antennules short and heavy, 
with second article slightly broader than long; 
lateral spine of stylocerite strong, with tip 
reaching slightly beyond end of second an- 
tennular article. Ventral lateral tooth of basi- 
cerite heavy, acute, and curving under scapho- 
cerite; superior lateral margin of basicerite 
projecting as a rounded lobe; scaphocerite with 
strong lateral spine, slightly curved towards tip, 
and reaching beyond end of antennular pe- 
duncle, squamous portion broad and anteriorly 
rounded, reaching to end of antennular pe- 
duncle; carpocerite equal in length to antennular 
peduncle. Either basal article of antennules or 
of antennae, or sclerite at their bases on ventral 
side of head bearing a sharp, acute tooth (see 
Fig. lc). 
Mouth parts protrudent and conspicuous in 
lateral view. Mandible large, curved distally and 
flattened laterally, bearing five teeth; posterior 
tooth acute, longer than middle teeth and 
curved; three middle teeth strong, acute, and 
of equal size; anterior tooth of left mandible 
awl-shaped, curved, almost 4 times the length 
of middle teeth and fitting into almost closed 
groove developed by corresponding tooth of 
right mandible; no trace of palp or pars molaris. 
Maxillulae with middle lobe greatly expanded, 
2.2 times as long as broad, exceeding the inner 
lobe by 0.7 of its length, distally truncate with 
rounded corners, and bearing two series of setae 
on inner margin; inner lobe short, obliquely 
truncate, and bearing strong terminal spine al- 
most as long as article and four other shorter 
spines, one curved; outer lobe smaller than inner 
and bearing a single weak spine. Maxillae 
reduced in size with total length of scaphog- 
nathite equal to length of maxillule; endites 
reduced to small lobes; palp without segments 
and bearing only few setae; setiferous scaphog- 
nathite narrow, with posterior lobe only 2 times 
as long as broad. First maxilliped with endite 
rounded, solitary (unless basal endites were lost 
in dissection), bearing four strong articulated 
spines and a few setae; endopod with no ap- 
parent segmentation, bearing few setae; exopod 
well developed; epipodite well developed, lobe- 
like, rounded. Second maxilliped apparently 
with only four articles distal to articulation of 
exopod; basal article of endopod with maximum 
length twice the breadth, inner margin bearing 
strong spines; next article with maximum length 
0.7 that of basal article; penultimate article 
broader but shorter than preceding article, 
bearing setae; ultimate article half as broad 
and one-quarter as long as penultimate, bearing 
five strong articulated spines. Third maxillipeds 
normal for family, with ultimate article twice 
length of penultimate, 0.3 length of basal article, 
and bearing few short scattered setae along 
margins. 
Only one of first pair of legs present. Ischium 
0.3 length of merus; merus 4 times as long as 
broad, unarmed, bearing few scattered setae; 
carpus somewhat cyathiform, distally expanded 
to accommodate base of propodus; palm slightly 
shorter than fingers, 0.7 as long as broad, some- 
what compressed; fingers heavy, fixed finger 
bearing fine serrations, dactylus with straight 
cutting edge, free margin armed with setiferous 
bristles; tips of fingers crossing. 
Second legs with merus 7 times as long as 
broad; three articles of carpus with ratio 10:2:3, 
first article 0.8 as long as merus, twice as wide 
distally as proximally; fingers and palm of chela 
subequal, together 1.4 times as long as distal 
article. 
Third legs with ischium 0.4 length of merus, 
bearing three setae; merus 5 times as long as 
broad, unarmed; carpus 0.9 as long as merus, 
also unarmed; propodus 1.4 times length of 
merus, about 15 times as long as broad, armed 
with short, very fine spines and setae along 
inferior margin; dactylus biunguiculate, with 
inferior unguis the heavier and shorter. 
Telson 2.8 times as long as broad distally, 
1.5 times as broad proximally as distally, sides 
with uniform taper, tip broadly arcuate, dorsal 
and terminal spinules small. Uropods narrow; 
tooth on proximal article small; distal tooth on 
outer uropod heavy, flanked by three smaller 
teeth. 
DISCUSSION: The origin of the spine on the 
ventral side of head could not be ascertained 
without dissections which would ruin the type 
