48 



CARL EOVALLIUS, AMPHTPODA HYPERIIDEA. 



VIBILIDvE. 



Syn. 1845. Vibilia Jeangerardi, LUCAS. 



?1853 Vibilia speciosd, COSTA. 



Exploration scientifique de l'Algerie, pen- 

 dant les annees 1840 — -42. Zoologie. 

 Histoire naturelle des animaux arti- 

 cules, p. 56. PI. 5, fig. 4. 



Spenoe Bate. 1802. Catal. Amph. Crust. Brit. Museum, p. 



303. PI. 49, fig. 9. 



Marion. 1874. »Recherches sur les animaux inferieurs 



du golfe de Marseille". Ann. Sc. 

 nat. 2 me Ser. Zoologie. Tome l er , 

 p. 5. PI. 1, fig. 1 — 1 h, lo and 

 pi. 2, fig. Ik. 

 »R.icerche su' Crostacei Amfipodi del Re- 

 gno diNapoli». Rendiconto della Societa 

 Reale Borbonica. 1853, p. 178. 



? 1872 Vibilia mediterranea, CLAUS. 



Grundzi'ige der Zoologie, 2te Aufi. p. 



The identity of Vibilia Jeangerardi and 1". mediterranea seems to be a little doubtful, 

 but as I do not find in the descriptions quoted above any differences worth speaking of, I 

 have regarded the latter as synonymous to the former. Vibilia speciosa, Costa, is too badly 

 described and figured 1 ) to allow of its identity being established with any degree of surety, 

 but I am very much inclined to believe that Marion is quite right in supposing it to 

 be synonymous to V. Jeangerardi. The original description of Lucas is not satisfactory, 

 but the later treatise published by Marion in 1874 is more exhaustive and makes it easy 

 to recognize the species. However, Vibilia Jeangerardi is closely allied to V. Permit, 

 differing from it chiefly by the simple, not subeheliform first pair of pereiopoda, by the 

 want of hairs on the legs, and by the shorter telson. 



The body is rather thick and broad. 



The head is a little deeper than long, the rostrum very short, shorter than half 

 the head. 



The eyes are elongate, a little broader above; the peripherical row of ocelli contains 

 larger ocelli than the central part. The pigment is very black. 



The first pair of antennas (PI. VII, fig. 3) consist of a thick and broad three-jointed 

 peduncle, the first or basal joint of which is more than twice as long as the two following 

 together, and a few-jointed flagellum. The first joint of the flagellum is very large, tumid, 

 ovate, slightly compressed, provided with long hairs at the inner sides; it is twice as long 

 as the peduncle. On its apex it carries the following joints of the flagellum, two or three 

 in number and very minute, the last one provided with some minute hairs. In the young 

 animal these terminal joints are larger and well developed, in very old males they are 

 almost obsolete. 



1 ) In the drawing (1. e. pi. V, fig. 9) there are eight pairs of pereiopoda instead of seven. 



