Boone, Cncstacea, Cruise of ''Alva," 1931 27 



The fourth, fifth and sixth pairs of legs are slender, stieklike, each 

 with an epipod, as long as the related article but very slender and 

 curved distally, acuminate, the dactyl has its anterior lateral margin, 

 rounded and tapering distally, confluent with the nearly straight 

 posterolateral margin and furnished with a heavy brush of thick-set 

 setae along the anterior lateral and distal margins. 



The male has a long, slender epipodite arising from the inner side 

 of the proximal article of the sixth pair of legs. The inner ramus of 

 the first pair of male pleopoda is specialized. 



Remarks: In the collection of the American Museum of Natural 

 History, there is a large male, collected at Palm Beach, Florida, of 

 the species Lysiosquilla glahriuscula Lamarck, which is identical with 

 the IndoPacific L. maculata (Lamarck), except in the following items: 



The shape and proportions of the tail-fan are the same, and both 

 have the same median dorsal triangular elevation, but the West In- 

 dian specimen lacks the corresponding ventral median triangular 

 elevation, and the median lateral area on either side is much more 

 coarsely punctate, showing under high magnification a wrinkled, or 

 reticulated surface, in which the punctae are replaced by coarser con- 

 cavities and the interstices are blunt, wave-like reticulae. There are 

 also four marginal teeth on each side of the telson of the West Indian 

 specimens, where in the present large IndoPacific specimens there are 

 only two teeth and a blunted node representing a third obsolete tooth. 

 However, Mr. Kemp (1913), figures the telsons of this species show- 

 ing other variations. 



References : Squilla arenaria terrestris Rumphius, Amboinsche Rari- 

 teitkamer, p. 4, pi. 3, 1705. 



Squilla maculata Fabricius, Ent. Syst., p. vol. 2, p. 511, 1793. 



Cancer (mantis) arenarius Herbst, Naturg. Krabben und Krebse, Bd. 

 II, p. 96, pi. 33, fig. 2, 1796. 



Lysiosquilla maculata Dana, U. S. Explor. Exped., vol. XIII, Crust., 

 pt. I, p. 616, 1852.— Kemp, S., Mem. Indian Mus., vol. IV, pp. 111- 

 116, pi. 8, figs. 86-91, 1913 (with complete synonymy to 1910).— 

 FuKUDA, Zobuts Zosshi Tokio, vol. 25, p. 72, 1913. — Philippines 

 Journ. Sci. (D), vol. X, p. 174, 1915. — Alexander, Journ. and 

 Proc. Royal Soc. West Australia, vol. I, pp. 8, 9, 10, 1916. — • 

 Suneer, Contrib. Faune des Indes Neerl., vol. IV, p. 72, fig. 4, 

 1918. — Edmondson, Occas. Papers P. B. Bishop Museum, vol. 

 VII, p. 292-295, 1921.— Odhner, Goteborgs Vet. Handl. (4), vol. 



