no. 3641 STOMATOPOD CRUSTACEA — MANNING 41 



Lysiosquilla tredecimdentata has not been recorded previously from 

 outside the Gulf of Aden. I have compared this specimen, a male, 

 with three females taken at Aden Harbor during the International 

 Indian Ocean Expedition. It differs in having a larger eye, which is 

 broader than the rostral plate, and in having fewer teeth, 10 instead 

 of 12, on the dactylus of the claw. I have assumed that these are 

 sexual differences, for in all other respects the four specimens are 

 almost identical, even to overall color pattern. 



Chopra (1939) noted that his specimen of L. maculata from the 

 Gulf of Aden had 12 teeth on the dactylus of the claw, an unusually 

 high number for L. maculata. All the specimens of L. tredecimdentata 

 from the Gidf of Aden examined by me had 12 teeth on the claw. 

 It seems likely that Chopra was dealing with L. tredecimdentata not 

 L. maculata. Ingle (1963) also listed the occurrence of the same 

 specimen previously recorded by Chopra. 



The single male specimen from Madagascar shows some trace of the 

 hairs on the propodus of the raptorial claw characteristic of adult 

 females of L. maculata. There is no apparent reduction in size of the 

 claw or in size and number of teeth. 



Distribution. — Western Indian Ocean, from Aden (?Chopra, 

 1939; Holthuis, 1941; ?Ingle, 1963) and from Madagascar. 



Odontodactylus Bigelow, 1893 



Three species of this genus are known to occur in the Indian Ocean, 

 and two of these are recorded below from Madagascar. Odontodactylus 

 brevirostris (Miers) , which is not represented in the present collection, 

 has been reported from the Seychelle Islands and from Providence 

 Island (Miers, 1884; Borradaile, 1907; Manning, 1967a) and could be 

 expected off Madagascar. 



The three specimens reported below were included by me in a 

 review of the genus Odontodactylus, which contained complete ac- 

 counts for each of the five known species. 



Odontodactylus japonicus (de Haan, 1844) 



Odontodactylus japonicus. — Kemp, 1913, p. 139. — Manning, 1967a, p. 7, fig. 2 

 [other references]. 



Illustration. — Manning, 1967a, fig. 2. 



Previous records. — Ambovombe (Manning, 1967a). 



Material. — 1 9, 117.0; Ambovombe, southern coast of Madagas- 

 car; 60 m; shelly sand; A. Crosnier; 8 October 1958; USNM. 



Remarks. — This specimen was recorded by Manning (1967a). 



Distribution. — Indo-West Pacific, from two localities in the 

 Indian Ocean, Seychelles (Borradaile, 1907) and Madagascar (Mann- 



