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PROCEEDINGS OF THE NATIONAL MUSEUM 



Color. — Entire body dusky, appearing mottled; carinas green in 

 preservative; some specimens with transverse patch of dark pigment 

 on second abdominal somite; distal portions of uropod dark, except 

 for distal segment of exopod, which is light with dark edges. 



Discussion. — The present specimens agree well with accounts of 

 the species in the literature. In shape of rostral plate and spination 

 of the abdomen they show an unusual amount of variation. The 





Figure 10. — Squilla nepa Lacreille, female, TL 

 85. 8, Baie Narendry : anterior portion of body. 



rostral plate may be triangular or subquadrate, with the apex trans- 

 verse or rounded. In one specimen the plate is very short and broadly 

 rounded. The submedian carinae of the third abdominal somite 

 are armed in about half the specimens; the spines may be present on 

 large or small specimens. The intermediate carinae of the second 

 and third somites may be armed. 



Distribution. — Western portion of Indo-West Pacific region, 

 from the western Indian Ocean and South Africa to Hong Kong. 



Acanthosquilla Manning, 1963 



Four species of Acanthosquilla have been recorded from the Indo- 

 West Pacific region and one new species is described herein. The 

 following key will distinguish the five species, of which all but one, 

 A. tigrina (Nobili), occurs in the western Indian Ocean. 



