192 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



and 6th abdominal somites and the short median point of the rostral plate 

 are just as distinctly specific of L. scabricauda as the scabrous telson. 



Monod,^^ however, is very definite about his record of the occurrence 

 of L. maculata in the Atlantic ofl[ the west coast of Africa, in the form of 

 the variety sulcirostris Kemp.^2 j^ all, I have seen 19 specimens from the 

 Hawaiian Islands, Samoa, the South- and Indo-Pacific, and La Libertad, 

 Ecuador, but never a specimen from Atlantic waters, from which the Na- 

 tional Museum representation of Crustacea is extensive. 



Size: This species attains a considerable size. Roxas and Estampador 

 record a Philippine specimen of 385 mm. (15.16 inches) in length. The 

 specimens from La Libertad, Ecuador, are, exclusive of rostral plate, 

 about 90 and 100 mm. long on the median line for the female and male, 

 respectively. 



Remarks: Both La Libertad specimens have 11 teeth on the rap- 

 torial dactylus, including the terminal one; the first or proximal tooth of 

 each of the dactyls is veiy small and inconspicuous and, with increase in 

 size and maturity, very likely disappears. The submedian portions of the 

 hinder margin of the telson in these specimens are finely crenulate, scarce- 

 ly denticulate. The dorsum of the telson is eroded or pitted in its hinder 

 lateral portions, but the prominence of these markings varies; as Kemp 

 has it, "on either side is a large oval patch of more or less regularly dis- 

 posed pits which are in some cases scarcely visible, but usually are specially 

 conspicuous in the neighborhood of the lateral and antero-lateral mar- 

 gins." Laterally, the dorsum of the 6th abdominal somite is somewhat 

 wrinkled or shallowly sculptured, with a slight nodular swelling either 

 side toward the posterolateral angles of the somite. In the female these 

 swellings are a little better developed than in the male, the one on the 

 left side even to the extent of forming a small, low, blunt, yet not very 

 noticeable, tubercle. 



Typical maculata will have from 9 to 11 (usually 10, very rarely 9) 

 teeth on the raptorial dactylus. The specimen of least size in the National 

 Collections is one of 114 mm. in median length and, like the Ecuadorian 

 specimens, it has 1 1 dactylar teeth, but the submedian portion of the hind 

 margin of the telson is smooth and entire. Any crenulation of the hinder 

 margin is most likely due either to individual variation or to the degree of 

 maturity attained by the specimen in question, rather than of varietal 

 significance. 



61 Bull. Soc. Sci. Nat. Maroc, Vol. 5, No. 3, pp. 88, 91, 1925. 



62 Mem. Indian Mus., Vol. 4, No. 1, p. 116, pi. 8, figs. 92, 93, 1913. 



