NO. 3666 CRUSTACEA—TIRMIZI AND MANNING 3 
of an undescribed species of Manningia, previously known only 
from the Gulf of Aden. Additional collecting in such habitats could 
result in the collection of other species of Gonodactylus, Protosquilla, 
and Pseudosquilla as well. Other species could be expected to occur 
offshore in deeper water. 
ZOOGEOGRAPHICAL NoTES.—Our knowledge of the stomatopods of 
the Indian Ocean is still so fragmentary that only preliminary ob- 
servations can be recorded here. The distribution of the 46 species of 
stomatopods from the northwestern Arabian Sea is tabulated below 
(data are from Kemp, 1913; Chhapgar and Sane, 1968; Chopra, 1939; 
Holthuis, 1967b; Ingle, 1963; and Manning, 1967b). Records for 
these species from Madagascar and South Africa (including southern 
Mocgambique) (Barnard, 1950; Manning, 1969) are included for 
comparison. Very little is known of the stomatopods of the East 
African coast proper. 
The fauna of the Red Sea is the best known of the areas in the 
northwestern Arabian Sea; 31 of the 46 species known from the latter 
area occur in the Red Sea. Seventeen of these species occur off West 
Pakistan. Habitats in the Red Sea are undoubtedly more diverse, 
and the greater diversity is reflected in the presence of species of 
Coronida, Gonodactylus, Protosquilla, and Pseudosquilla there. 
Only 16 of the 46 species from the northwestern Arabian Sea occur 
off Madagascar, and only 12 extend as far southward as southern 
Mogambique and South Africa. Thirteen of the species recorded from 
Madagascar by Manning (1968b) and 11 of the species known from 
South African waters (Manning, 1969) do not occur in the north- 
western Arabian Sea. The fauna, however, of the central portion of 
the western Indian Ocean is somewhat richer than that of either the 
northern or southern portions of that ocean, for approximately 60 
species are known from there. A more detailed analysis of the sto- 
matopod faunal patterns in the Indian Ocean is in preparation in a 
review by one of us (R.B.M.) of the stomatopods collected during 
the International Indian Ocean Expedition. 
The stomatopod fauna of West Pakistan can be expected to be 
very similar to that found off Bombay, India, to the south; 17 species 
are now known from Bombay (Chhapgar and Sane, 1968), and only 
9 of these occur off Pakistan. Shallow, muddy bottoms are a pre- 
dominant coastal environmental feature along much of the eastern 
shore of the Arabian Sea, and there is little reason not to expect a 
relatively uniform stomatopod fauna throughout that area. 
It seems unlikely that there are any major faunal discontinuities 
in the Arabian Sea proper, at least as far as the stomatopods are 
concerned, although some local discontinuities may exist as a result 
of changes in habitat. The absence of coral reefs off West Pakistan 
