1881.] THE SURVEY OF H. M.S. 'alert.' 79 



(1879), by the form of the terminal segment, which is acute at its 

 distal end, and the greatly dilated basal joints of the antennules; 

 the outer ramus of the uropoda is not larger than the inner; the 

 frontal interantennulary process is obsolete. 



Sph^roma gigas. 



Spharoma gigas. Leach. Diet. Sci. Nat. xii. p. 346 (1818) ; M.- 

 Edwards, Hist. Nat. Cr. iii. p. 205 (1840) ; Miers, Cat. New-Zeal. 

 Crust, p. 110 (1876). 



Several specimens, all of small size, of this species, which is very 

 common in the Straits of Magellan and at the Falkland Islands, and 

 also occurs at the Auckland Islands and New Zealand, were collected 

 by Dr. Coppinger at Elizabeth Island (6 fms.) Sandy Point (9-10 fms,) 

 on a sandy bottom, and an adult male at Silly Bay. 



Dynamene darwinii. 



Cymodocen darwinii, Cunningham, I. c. p. 499, pi. lix. fig. 1 



Two examples were obtained by Dr. Coppinger at Elizabeth 

 Island (6 fathoms), on a sandy bottom. It appears to be rare, as Dr. 

 Cunningham met with it only on the north coast of Eastern Fuegia and 

 in very small numbers. An adult example collected by Dr. Cun- 

 ningham, and preserved in the Museum collection, is a' male. The 

 larger of the two obtained by Dr. Coppinger at Elizabeth Island is 

 apparently a female, and is of a bright rose-colour. In a small 

 example from Borja Bay (14 fathoms) the tubercle on the dorsal sur- 

 face of the terminal segment is less developed and the lateral lobes 

 of the fifth thoracic segment scarcely thickened. 



CiRRIPE D lA. 



Balanus L^VIS. 



Balanns /avis, Brugui^re, Encycl. Meth. pi. clxiv. fig. 1 (1789); 

 Darwin, Monog. Cirripedia, Balanidse, p. 227, pi. iv. fig. 2 (18.54), 

 ubi sytion. 



Several clusters of this species, which is very common and abundant 

 in the Magellan Straits, were collected at Sandy Point, at a depth of 

 7 fathoms, adhering to shells &c. All are of the typical variety. 

 Its range, according to Darwin, extends northward to Chili, Peru, 

 and California'. 



1 Besides the species enumerated above, there are in the collection four small 

 specimens of a species of Aniphipoda, allied in many of its characters to Orcho- 

 mcne, obtained at Elizabeth Island in 6 fathoms, and four specimens of a 

 Caligiis (not the C. chcemichfhys, Cminingharn) taken from a sea-water fish at 

 Puerto Bueno, in rather bad condition, which I do not venture to describe ; also, 

 among the surface-dredgings made at various localities in the North and South 

 Atlantic, larval stages of several species of Decapoda and Stomatopoda and a 

 few species of oceanic Oopepoda. 



