29 



margin with 2 spines and a few setae, while 5 or 6 unequal spines are implanted on the lower 

 half of the distal margin. Chela 4-times as long as the carpus, palm half as long as the fingers, 

 nearly half as wide as long; a spine at the far end of the lower margin, another in the middle, 

 like also a few setae. Fingers like those of i"' pair. 



Basipodite of 3"^ legs (Fig. 8«') with 2 spiniform setae on the upper margin. Ischium slender, 

 with 3 spines on the lower margin, one at the distal fifth, one a little behind the middle and 

 one near the base ; 4 or 5 strong long setae along the distal and some shorter ones along the 

 proximal half of the upper margin. IVIerus a little more than half as long as the ischium, lower 

 margin fringed with setae and with 3 spines, one not far from the distal extremity, the other 

 at the posterior third, the last near the base. Carpus one-third of the merus, half as thick as 

 long, lower margin with 6 long setae, that increase in length and of which the longest, at the 

 far end, reaches beyond the middle of the propodus; there is also a strong spine, about half 

 as long as the carpus, at the distal extremity. Propodus one and a half as long as the carpus, 

 almost 5-times as long as wide, lower margin fringed with 10 long setae, resembling those of 

 the carpus, upper margin also setiferous. Dactylus two-thirds of the jjropodus, nearly 5-times 

 as long as wide, both margins with a few setae and three setae at the distal extremity, of 

 which the longest is somewhat longer than the dactylus itself. 



Basipodite of 4"' pair with a strong spine, like in Lept. robusta Stimps. Ischium a litde 

 more than twice as long as wide, merus nearly as long as the ischium, carpus one-fourth 

 shorter than merus, propodus little more than half as long as the carpus, merus, carpus and 

 propodus almost 3-times as long as wide; dactylus one-third longer than propodus. All the 

 joints of this leg are fringed on both margins with long stiff setae. 



Basipodite of the legs of 5"^ pair with a short spine and a spiniform seta, which is twice 

 as long. Ischium with a spine at the far end of the lower margin. Merus almost 3-times as long 

 as wide, carpus nearly as long as the merus, about 3-times as long as wide distally, propodus 

 a little more than half as long as the carpus, hardly more than twice as long as wide, dactylus 

 one-third longer than propodus, slightly arched, slender, tapering to the acuminate extremity, 

 5-times as long as broad at base. The margins of this leg are fringed with long stiff setae. 



The ova of the female from Stat. 258 are 0,4 — 0,5 mm. long and a little less broad. 

 In his work on the INIacrura of the Challenger Expedition, p. 862, PI. CXXXIX, fig. 3 and 4 

 sixteen specimens, males and two egg-bearing females, from off Fast Moncoeur Island, Bass 

 Strait, were referred by Spence Bate to Lept. robusta Stimps., in my opinion wrongly. Unfor- 

 tunately the author confined himself, besides to a few remarks of little importance, to the 

 translation of Stimpson's diagnosis, in which the words "carapax ecarinafus" were translated by 

 "carapace carinated", a fault already indicated by Dr. Ortmann in his work "Decapoden und 

 Schizopoden der Plankton-Expedition", 1893, p. 41. According to the figures 3 and 4, however, 

 the species from Bass Strait differs from Ltpt. robusta Stimps. by the outer orbital angle being 

 spiniform, not unarmed, obtuse; in fig. 3. the female, the antero-inferior angle of the carapace 

 appears moreover also sharp, but in fig. 4, the male, obtuse, a difference to which I have 

 already called attention in 1902 (Abhandl. Senckenb. Naturf. Gesells.). B.\te's species differs, 

 however, also from Lept. pugnax by its larger size, by the rostrum which is not turned upward 



