KONGL. SV. VET. AKADEMIENS HANDLINOAU. BAND. 22. N:0 7. 25 



the Rev. Mr Stebbing most kinclly sent me his magnificent woi-k oii the Challenger Amphi- 

 poda. Among the Hyperids quoted there he gives an elaborate description of Para- 

 phi-onima cuivis n. sp. which, however, according to my opinion is a true P. gracilis. He 

 himself mentions that the very short descriptions of the previously known species made it 

 impossible to identify the Challenger specimens with any one of the old species. He suggests 

 also »that a single name may suffice for thein all». Really, I ani very inclined to think that 

 the species of Paraphroninia could be just as well called varieties as species. J-Jut as I 

 do not tind it more convenient for the carcinological study to establish varieties without to 

 know the connecting links, and as the four species P. pedestris, P. gracilis, P. crassipes 

 and P. clypeata differ by constant, if truly small, characteristics I quote them here as species, 



A. The peduncles of the first two pairs of uropoda are more than twice as long as 



the inner rami 1. V. petlestris. 



B. The peduncles of the first two pairs of uropoda are only a little longer than 



the inner rami. 

 b 1. The seventh pair of pera3opoda are not longer than tlie first four joints 



of the sixth pair 2. P. gracilis. 



b 2. The seventh pair of perseopoda are nearly as long as the sixth pair. 



bb 1. The rami of the last pair of uropoda are much longer than the 



breadth of the peduncle 3. 1'. i-rassipes. 



bb 2. The rami of the last pair of uropoda are not longer than the breadth 



of the peduncle 4. P. clypeata. 



1. PARAPHRONIMA PEDESTRIS, F. E. GUÉRIN-MÉNEVILLE, 1836. 



Paraphronima pedestris, Giiéein-Méneville. 

 Facsimile from Gukrin-Mknevii.i.e, Icognographie du Régne Aiiimal, pl. 35, fig. 6. 



Diagll. Ccqnit multo altius quam longius, non duplo altius quam segmentum primum peraji, segmentis 

 tribus primis peraei conjunctis brevius. Pedes percei elongati, graciles, femoribus augustis, 

 carpis valde elongatis. Femur pedum primi paris articulis sequentibus conjunctis longius. 

 Metacarpus pedum tertii ac quarti pariuni metacarpo pedum quinti ac sexti parium longior. 

 Pedes quinti paris quam perjeon multo longiores. Pedes sexti paris pedibus quinti ^jaris 

 breviores. Pedes septimi paris pedibus sexti paris multo breviores. Pedunculi pedum nri 

 elongati, ramis multo longiores; rami acuti. 



The head is much deeper than long, not twice as deep as the first personal segment, and 

 shorter than the first three perseonal segments together. The perceopoda are elongate, 



A 



K. Sv. Vet. Akad. Handl, Band. 22. N:o 7. ^ 



