G A. 0. \YALKER. 



up to May, 1906, I refer my readers to it where my references are insufficient. The 

 nomenclature of the genera and species has been corrected to correspond with it. 



I have not thought it advisable to give synonymic lists of the older species, as I 

 have often found these to be sources of error, owing to mistaken identifications. 



The following terms are used in the descriptions : 



" Picon " = metasome, G. 0. Sars ; the first three abdominal segments. 

 " Urus " = urosome, G. 0. Sars ; the last three abdominal segments. 

 " Ocular lobe " = lateral angle of the head. 

 " Appendage " = secondary or accessory appendage of the upper antennae. 



In the peduncle of the antennse, the " first joint " is the antepenultimate ; in the 

 limbs it is the basipodite. The measurements are from the tips of the uropods to the 

 base of the antennae, when the amphipod is straightened. 



FAM. VIBILIID.-K, CLAUS. 



VlBILIA PROPINyUA, 

 Vililia jtrojtintjua, Stebhing. 



From lat, 54 01' S., long. 170 49' E. (27 Dec., 1901) to lat. 69 S., long. 174 E. 

 (7 Jan., 1902); many specimens. The 'Challenger' specimens were taken in lat. 

 25 30' N., long. 130 E. It has recently been recorded by Mr. Stebbing from the Bay 

 of Biscay.* 



The genus Vibilia has been partly revised by Herr Vosseler,f but his paper does 

 not include the following species : 



1892. 1. V. erratica, Chevreux, Bull. Soc. Zool. de France, 17" annee, pp. 32-35. 

 1896. 2. V. bovallii, Bonnier, Camp, du Caudan dans le Golfe de Gascogne, Ann. Universite de 

 Lyon, p. 612, PI. XXXV., fig. 3. 



1900. 3. V hirondellei , chevreui, Camp, scient. de 1'Hirondelle (1885-8), Fasc. XVI. 



Amphipodes, pp. 125-134, Pis. XV., XVI. 

 5. V. grandumms } 



Of these No. 1 is distinguished by the wrist of the second gnathopods. being 

 without the usual process. Nos. 3 and 4 belong to Bovallius' division, in which the 

 lateral angles of the last urus segment are not produced backwards. No. 3 is said to 

 be very near to V. viatrix, Bov., but distinguished by the presence of a rostrum 

 (which, according to Vosseler, occurs also occasionally in V. viatrix), the rounded form 

 of the epimeral plates of the first and second pleon segments, the partial coalescence of 

 the two last urus segments, and the great length of the carpal process of the second 

 gnathopods. No. 4 is characterised chiefly by the large size of the teeth on the palmar 

 margin of the first gnathopod. No. 5 has the angles of the last urus segment produced 

 in " deux petits prolongements lateraux, larges et arrondis." In the present collection 



* Trans. Linn. Soc. Zool., 2nd Ser., Vol. X., p. 81. 



t Amphipoden d. Plankton Ezpn. 1 Tell. Hyperiidca, Mitt. Koniglich. Nat. Kabinct, Stuttgart, 1901. 



