Alpheid Shrimp — Banner 
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pressed areas on either face; inferior margin 
terminating, almost right angled, in strong 
shoulder on outer face. 
Small chelae also similar in both sexes. 
Merus unarmed on inferior internal margin. 
Palm slender, rounded, without sculpturing. 
Fingers 1.4 times length of palm in female, 
1.7 times length of palm in male, straight ex- 
cept for slightly hooked tips, both movable 
and fixed fingers rounded on outer portion of 
opposing faces, bearing a sharp cutting edge 
on inner margin; dactylus bearing a low 
rounded tooth proximal to cutting edge. 
Carpal articles of second legs with the ratio: 
10:7.6:2.0:2.3:4.3; chela, in same ratio, 1.7. 
Third and fourth legs with ischium bearing 
weak spine; merus 6 times as long as broad, 
unarmed; carpus 0.6 as long as merus, with- 
out distal teeth or projections; propodus 0.75 
as long as merus, bearing 6 feeble spines and 
numerous long setae; dactylus 0.3 as long as 
merus, strongly curved in superior view, 
roughly triangular in cross section, with both 
superior faces somewhat convex, inferior face 
broad and flattened. Fifth leg with brush on 
propodus strongly developed. 
Telson 2.4 times as long as posterior mar- 
gin is broad, 1.3 times as broad anteriorly as 
posteriorly; in dorsal view, anterior 0.6 with 
slightly convex margins, without taper, then 
tapering abruptly to posterior portion with 
parallel margins; in lateral view, middle of 
lateral margin strongly depressed; tip strongly 
arcuate. Dorsal spinules feeble; inner pair of 
posterolateral spinules so slender that they 
can be confused with terminal setae; terminal 
setae numerous and heavy; posterior margin 
also armed with series of minute spinules. 
Outer uropod with spine on shoulder slight. 
Inner uropod with a shallow but well- 
demarked basin to accommodate depressed 
lateral margin of telson. 
DISCUSSION: These specimens agree very 
well with the species A, malaharims as re- 
described by Henderson, and with the sub- 
species described by de Man {loc. cit.), except 
in the length of the rostrum and the relative 
proportions of the small chela; apparently all 
are similar in form of the dactylus of the third 
legs, in the general shape of the large chela, 
etc. However, all specimens of H. malaharims 
except that described and figured by Barnard 
from South Africa {loc. cit.), have longer ros- 
trums, and in none are the fingers as short 
when compared to the palm. Both reported 
subspecies have fingers on the small chela 
that are gaping instead of straight. The habi- 
tat of these specimens— the thick soft mud of 
a fish pond— and those reported by Hender- 
son from India are also similar. 
Because of their great similarities it is not 
logical to consider these specimens as other 
than a geographically isolated subspecies; it 
may be that when other specimens are found 
between Hawaii and India intergrading speci- 
mens will be found. 
The type locality, Wailupe fish pond, no 
longer exists. It was filled in and is now used 
for homesites, the area being called Wailupe 
Peninsula. Presumably the subspecies exists 
elsewhere in the Hawaiian Islands, but it has 
not yet been found in other areas. 
Thunor Armstrong 
Thunor microscaphis sp. nov. 
Fig. 13^-/ 
Thunor sp. Banner, Pacific Sci. 10(3): 367, 
fig. 23a-e, 1956. 
TYPE SPECIMEN: A 9-5 mm. male from 
Station 827, Likiep Atoll, Marshall Islands, 
USNM 194726; collected by S. V. MacNeil. 
DESCRIPTION: Specimen with cephalotho- 
rax preponderant, abdomen reduced, only 
slightly more than equal in length to carapace. 
Anterior carapace distorted in specimen 
with folds and wrinkles permitting the eyes 
to be partially exposed. Rostrum obtuse, 
short, not reaching beyond anterior margin 
of orbital hoods, and bearing low, rounded 
Carina reaching to slightly past middle of 
orbital hoods. Orbital hoods large, inflated, 
evenly rounded anteriorly. 
