KONGL. SV. VET. AKADEMIKNS HA>;DL1NGAK. BAND. 21. N:0 5. 45 



bl) 1. The inetacarpus of tlie second piiir of pereiopoda is not produced. 



bbb 1. The processes of the last ural segment are verv short 12. V. gracilis. 



bbb 2. The processes of the last ural segment are as loug as 



the telson 13. V. gracileuta. 



bb 2. The metacarpus of the second pair of pereiopoda is produced an- 



teriorly _ 14i V. arniata. 



b 2. The pediineles of the last pair of iiropoda are shorter than the rami, 



pyriforin 15. V. pjripes, 



The typical species T". Peroni was described in 1830 by H. Milne Edwards (see 

 below). However I was not able to find it in the collection of Hyperids from the »Musée 

 du Jardin des Plantes», raost liberally entrusted to lue for examination by Professor Al- 

 1'HONSE Milne P^d^vauds, nor have I siiceeeded to identity it among those many luuidreds 

 of V i bi Ii tx" that I have e.xamined in other colleetions. 



In tlie vear 1836 Templeton ^) described under tiie uanie of T/uiuvudia debilis a 

 crustacean whieh jjrobably is a young \'ibilia, but the description is too incomplete to 

 allow of its identifieation. In 1845 LuCAS (see p. 48) gave a good figure and a short 

 description of Vibllui Jcan</ej(ir(/i from the coast of Algeria. A. Costa in 1883 proposed 

 the name Vihilia qjecioisa for a \ ibilia which according to the apprehension of Marion 

 is the same animal as the last nientioned. The suggestion of this author seems to be 

 well founded, judging fi'om a eomparison of the drawings and descriptions. The 

 next increase in the number of species is due to Spence Bate, wlio described in 18(i2 

 (see below) two new species, viz. VihlHa Ediriivdsi and Vibilia affinis. The same author, 

 in connection with Westwood (see Ijclow), nientions shortly in 1868 a new species, Vihi- 

 lia borealis, distinguished by tiie Ijroad femora of the fiftli to seventli pairs of pereiopoda. 



1. VIBILIA PERONI, H. MILNE EDWARDS, 1830. 



Vibilia Peroni, 11. iMlLNE KdwaRDS. 

 Facsiniile from iMti..\E Euwakds Hisl. uot. Crusl. III, pl. 30, lig. I. 



Diagn. Caput rostratum segmentis duobus priuiis jjereii brevius. Flagellum anteunarum primi paris 

 ante rotundatum, capite paullo longius. Femora parium sex primoruiu pedum pereii cylin- 



*) In the TraiisactioQs of the Eutoraological Societv ; vol. 1, p. 186. Pl. 20, fig. 2. 1836. 



