EEPORT ON THE AMPHIPODA. 517 



Nebeliast,' while Dana says expressly ' Antennaj prinife uon appendiculatse,' and Spencc 

 Bate does not attribute an accessory flagellum to a single one of his 39 species of 

 Amphithoii." (Compare Note on Huxley, 1877.) Kossmann having found a form, in other 

 respects near to Ampliitlioe, but with an accessory flagellum, not without show of reason 

 institutes a new genus for it, which he regards as a link Ijetween Gammariis and Ampliitho'd. 

 The Podoceriis longicornis, Heller, and Podocerus largimawus, Heller, 1867, which Nebeski, 

 1880, transfers to Amphitlwe, although they have an accessory flagellum, should perhaps 

 rather be placed in Kossmann's genus Anipliithdides, unless that itself should yield to Gruhia, 

 Czerniavski, 1868. 



The new genus is thus defined : — " Schaft der obern Antenne kiirzer, als der der untern, tragt 

 eine Nebengeissel. Gnathopoden ungefiihr gleich gross ( ? f). Epimeren wie bei 

 AmphWwe. Aussenast der letzten Pleopoden niit nur oinem ausgebildeten Haken versehen. 

 Telson einfach, flach, ohne Bewaffnung. Breite Brutbhitter." 



The type-species, Ampliithdides longicornis, n. s., is not figured. The upper antennae are as long 

 as the animal. The second joint of the peduncle is more slender and somewhat longer than 

 the first ; the third much shorter. The principal flagellum consists of twenty-two (with the 

 terminal rudiment twenty-three) joints distally increasing in length ; the accessory flagellum, 

 consisting of one long and one short joint, does not attain the length of the first joint of the 

 principal flagellum. The mouth-organs answer to Dana's figures for Amphithuii. Other 

 particulars are given, but it is a great disadvantage that the establishment of a new genus 

 should be unattended by illustrative figures. The specimens did not exceed a length of 

 4 mm. In the two-jointed accessory flagellum and the last uropods this species agrees with 

 Podocerus monodon, Heller, 1866, but the principal flagellum of the upper antennae is quite 

 distinct. 



In the family Corophiidfe, he notes that Colomastix, Grube, is earlier than either Exunguia, 

 Norman, or Cratippus, Spence Bate. He describes Colomastix hamifer, n. s., Taf. xv. 

 Fig. 1-10, which seems to be separated by very fine distinctions from Colomastix p)usilla, 

 Grube, as Cratippjus tenuipes, Sp. Bate, by equally subtle difl'erences from Grube's species. 

 In Colomastix liamifev the second gnathopod, however, is described as having the second, 

 third and fourth joints very short ; this probably indicates that the specimen was a male 

 form. 



lu the tribe Hyperina, family Synopiadas, Kossmann describes Sijnopia oricntalis, n. s., Taf. xv. 

 Fig. 11-13. Only the first pera;opod, part of the second, and the maxillipeds, are figured. 

 In many respects the species is stated to agree with Dana's Sijnopia idtramarina. The 

 mouth-organs obviously remove this genus, as has been pointed out by Claus, from the 

 Hyperina. 



1880. Markham, Albert Hastings. 



The great frozen sea. A personal narrative of the voyage of the "Alert" 

 during the Arctic Expedition of 1875-6. Fourth Edition. London, 1880. 



On the nth of May, 1876, within about 400 miles of the North Pole, in a depth of 71 fathoms, 

 " a bread bag, filled with the scrapings of our pannikins and a little pemmican, was lowered 

 to the bottom, and, having been kept there some hours, was hauled up, and to our great joy 

 was found to be almost alive with numerous small crustaceans and foraminifera ; specimens 

 of which were, of course, collected and preserved, being the most northern animal life yet 

 discovered." A footnote to the word " crustaceans " says, "Anonyx nugax, a fine adult male 

 example, and several smaller ones. The length of the largest specimen is 1 J inch. This 

 species is one of' the commonest and most abundantly distributed of the northern 



