KEPORT ON THE SCHIZOPODA. 55 



the representative of a uew species, to which he ;;ssigus the name of Encopia equatoria, 

 but after a careful examination of this, I feel convinced that it ought to be regarded 

 as a male of Eucopia au.stralis, the assumed specific differences being readily accounted 

 for as mere sexual characters. 



13. Eiicojna australis, Dana (PLs. IX. and X.). 



Eucopia anstrdlis, Dana, United States Exploring Expedition, Crustacea, part i. p. 609 ; Atla.s, 



])1. xi. fig. 10, a to m. 

 Ckalaraspis imt/HUuhi/a, Sulim, Trans. Liiin. Soc. Lond. (Zoo!.), ser. 2, vol. i. p. 37, pi. viii., 187.5. 

 Eticopia auatruUs, G. 0. Sars, Preliminary Notices on tlic Challenger Schizopoda, No. 12. 



S2Jecific Cliaracters. — Form of bodj" rather slender, tail tapering backward very 

 (considerably, with last segment very ' elongate. Carapace indistinctly ai-eolate in its 

 anterior part, cervical and branchiostegal lines well marked ; lateral ■w'ings rounded off 

 at the tip and projecting far beyond the first caudal segment. Frontal margin evenly 

 arched. A slight infra-orbital projection present, but no trace of supra-orbital, antennal, 

 or branchiostegal spines. Eye small, cornea scarcely expanded at all ; in male some- 

 what larger, with darker pigment. Last joint of antennular peduncle produced interiorly 

 into a setiferous lobe. Antennal scale oblong-ovate, apex rounded, outer edge some- 

 what sinuous, and terminating in a very small denticle. The three anterior pairs of 

 gnathopodous legs in male rather stronger than in female, the propodal joint being greatly 

 .swollen ; the three succeeding pairs of legs attaining almost the length of the whole body, 

 propodal joint slightly dilated and strongly spinous at the distal part of its inner edge, 

 terminal claw scarcely half as long, straight and s2:)inous at base. Terminal part of telson 

 fringed with unecjual spinules, the apex being armed with two straight spines, between 

 which two smidl bristles are attached. Uropoda attaining length of telson, outer plate 

 oblicjuely truncate at apex, with three small denticles at the end of the straight outer 

 edge. Length reaching 50 mm. 



Remarks. — There cannot, I think, be any doubt whatever that this form is 

 identical with Dana's Eucopia austraUs. The author in question, it is true, does 

 not describe the very peculiar structure of the three pairs of legs preceding tlic hist, but 

 merely remarks that the four posterior pairs are very Icng and slender, frcm which it 

 might be inferred that all these pairs have had a uniform appearance in Dana's specimen. 

 It must, however, be boi'nein mind that the solitaij' example described by Dana was not 

 in a very good state of preservation, having been taken from the stomach of a penguin, 

 and Dana, moreover, states, that the four posterior pairs of legs were j)artly l)roken. 

 In all other respects the figures and descrijition of Dana ngrec siilficicntly well with the 

 form here treated of, and described by the' late Dr. v. Willemoes-Suhm under the name 

 of Ckalaraspis unyuictdata. 



