THE COPENHAGEX MUSEUM A.XD OTHER SOUKCES. 401 



First anteniue. Tlie first joint is very small, at least as broad as long; the second and 

 third joints are each slightly longer ; the fiagcUuni consists of four joints, together about 

 as long as the third joint of the peduncle. 



Second antenme. The peduncle is large and stout, its penultimate joint about three- 

 fourths as long as the iiltimate, and not stouter. The flagellum is shorter than the 

 peduncle, and on one side of the specimen contained tv\enty-one jijints, on the oilier side 

 eighteen . 



First (jnuthopoijs. The second joint is nari-ow at the base, and then becomes rather 

 broad ; the fourth has no apical process ; the fifth aa idens to a distal, pellucid, prominent 

 but narrowly rounded process of the hind margin; the sixth joint, which is twu-thirds 

 the length of the fifth, is oblong, widening very slightly to the palm, which has no 

 conspicuous process, and is overlapped by the small iinguiculate finger. Both the fifth 

 and sixth joints are beset with a moderate armature of spinules. 



Second (jnatliopods. The second joint is not very wide, though for most of its length 

 much wider than at the base. The tliird and fourth joints are very small, but larger 

 than the almost evanescent fifth. The sixth joint is very large, fringed Avith spinules 

 on the hind margin, widening to the palm, which is moderately oblique, spinulose, 

 smoothly convex between a blunt defining tooth and a deep depression near the tinger- 

 hino-e, the depression corresponding with a rounded process of the finger's inner margin; 

 the large curved tinger matches the palm. 



First and second j^ierceoipods. These are slender, the tirst pair conspicuously longer 

 than the second, the short tinger of the second ha\ ing, as usual in the genus, its inner 

 margin indented. 



Third, fourth, and jifth ferceopods. Of these the third is much smaller than either of 

 the others. In all the second joint is oval, but in the tilth pair, in which it is largest, 

 the oval is modified by the comparative straightness of the hind margin. In the fourth 

 and fifth pairs the joints following the third are rather long and narrow. 



First iiropods. The upper ranuis has lateral as well as apical spines, and is rather 

 shorter than the lox^er ramus, which has only apical spines. 



Second iiropods. The rami are equal, and both have lateral spines. 



Third u-ropods. The ramus is not half as long or half as broad as the peduncle. It is 

 armed with a row of three spinules. 



Length two-fifths of an inch, 10 mm. Prom the size of the second gnathopods and 

 powerful second antennae in the single available specimen it may be inferred to be an 

 adult male. It agrees with the imperfectly described Orchestia tucurauna of Fritz 

 Miiller in regard to the finger and the notched palm of the second gnathopods, but 

 jMiiller lays stress on the fact that these characters are combined with incrassated fourth 

 and fifth joints of the fifth perteopods in his species, the younger males with slender 

 peraiopods having also a smooth palm to the gnathopods and the second antennae 

 slender. 



Hah. Ihe specimen, which belongs to the Copenhagen Museum, was labelled 

 " Madeira ? Suleuson." 



The specific name is given in compliment to the traveller who procured the specimen. 



