Boone, Crustacea, Cruises of "Eagle" and "Ara," 1921-23 69 



branchial region. The first, second, third, fourth and fifth abdominaa 

 „ts in the female each have a median spine, that on the fifth 

 segment being less developed than the others; on the sixth segment 

 ttoeTs a very slight median elevation ; the sixth and seventh segments 



are entirely fused. , . . j. £ u ,,+ 



The external maxiUiped has the ischial and meral joints of about 

 equal length along the outer margin; the ischial ^omt .s narrow b- 

 ally widening distally, with the outer margin rounded, the inner 

 ^II angle decidedly produced into a protuberant lobe; the merus 

 is narrowed distally and proximally with its inner lateral margin con- 

 vex and spinulose, not excavated at the inner distal angle for the palp 

 which is well developed, three-jointed and setiferous. ^ , . . ,^ 



The chelipeds have the ischial, meral, carpal, and propodal jomts 

 spinulose on both upper and lower margins ; the merus is elongate and 

 has one very long spine on its upper distal margin; the carpus has 

 one long, sub-basal spine and two at its upper distal margin ; the hand 

 is high, compressed, with a median longitudinal groove on its outer 

 face^he fingers are slightly longer than the palm and very curved 

 inward; the cutting edges meet and are finely denticulate. 



The ambulatories are exceedingly slender and long. 

 SYNONYMY.-Cancer longirostris Fabricius, Syst., Entom., p. 408, No. 



■ 42 (part), 1775. 

 Inaclius longirostris Fabricius, Suppl., p. 358, 1798, tome 8. 

 Uacroprus longirostris Latreille, Hist. Nat. des Crust., p. HO, 1802. 

 Uacrovodia longirostris Risso, Hist. nat. de I'Europe mend., t. V, 



p. 27, 1826. 

 8tenorhynchus longirostris H. Milne Edwards, Hist. Nat^des Crust., 

 t I p 280 1834 —J. Bonnier, Catal. des Crust, de Concarneau, 

 p 8, 1887 (and synonymy) .-A. Milne Edwards et Bouvier, E. 

 L,. Result, des Camp, scient. de 1-Hirondelle" (suppl.) et de la 

 -Princess Alice," fasc. XIII, p. 48, 1899; Exped. du Travailleur 

 et du Talisman, Decapodes, p. 156, pi. 22, fig. 6, 1900. 

 Macropodia (Stenorhynchus) rostrata 0. Pesta, Die Decapodenfauna 



der Adria, p. 318, fig. 99, 1918. 

 Stenorhynchus tenuirostris Bell, Brit. Stalk-eyed Crust., p. 6, and 



figure, 1853. 

 Macropodia tenuirostris Leach, Edinb. Encycl., t. VII, p. 395 et 431, 



1814. 



