372 



CARL BOVALLIUS, AMPHIFODA HYI'KRIIDEA. I. 2. 



PHRONIMID^E. 



3. PHROMMA SOLITAIMA, F. E. GUERIN MENEVILLE, 1836. 



PI. XVI, fig. 4—7. 



Diagn. Caput segmentis tribtts primis peraei paullulo brevius. Segmenta duo priora perwi segmento 

 tertio paullo altiora. Processus tibialis pedum percei secundi paris dimidio stipitis carpi 

 multo brevior. Pedes quinti paris pedibus quarti paris longiores; carpus longior quaiu 

 latior; processus carpalis tuberculo marginis inferioris longior; tuberculus maxim us, integer, 

 crenulatus; metacarpus tuberculo carens. Femur pedum septimi paris angustum, femore 

 pedum sexti paris paullo longius. Latera segmentorum phi post acuta, non producta. 

 Ramus internus pedum uri secundi paris ramo externo brevior. 



The hi'ad is a trifle shorter than the first three pergonal segments together. The first two 

 perieonal segments are a little deeper than the third. The tibial process of the second 

 pair of pevcvopoda is much shorter than half the stem of the carpus. The fifth pair are 

 lunger than the fourth; the carpus is longer than broad; the carpal process is longer than 

 the tubercle on the under margin of the joint; the tubercle is very large, undivided, and 

 crenulated; the metacarpus wants a tubercle. The femur of the seventh pair is narrow, 

 and is a little longer than that of the sixth. The lateral parts of the pleonal segments 

 are sharp-pointed behind, but not produced. The inner ramus of the second pair of uro- 

 poda is shorter than the outer. 



Colour. Hyaline, with red spots on the lower parts of the body and on the femora of the peraeopoda. 



Length. 12—22 mm. 



Hab. The subtropical and tropical regions of the Atlantic; the Indian Ocean. (D. M. ; 

 F. M.; P. M.; S. M.) 



Syn. 183(>. Phronima solitaria, E. E. GUERIN MENEVILLE. 



1888. » megalodus, TH. STEBBING. 



Iconographie du Regne Animal de 

 G. Cuvier. Crust'ac6s, p. 21. 



"Report on the Amphipodaw. Voy. 

 of H. M. S. Challenger. Zoo- 

 logy. Vol. 29, p. 1353, pi. 162, A. 



Phronima solitaria was shortly described in 1836 by Guerin Meneville, but was 

 not recorded by subsequent authors; as I have said above it is most probably only a 

 variety of Ph. sedentaria. The original description runs: 



»Nous avons une autre espece, prise dans l'Ocean qui baigne les cotes d'Amerique, assez 

 loin de l'embouchure de la Plata. Elle ressemble a la precedente (Phronima atlantica), mais la 

 main de la cinquieme paire de pattes est beaucoup plus longue et plus grele, peu renflee vers 

 1'extremite, avec la griffe simple, mais fortement renflee au milieu et une forte dent au cote in- 

 terne de la pointe opposee de cette griffe. Cette troisieme espece a, comme ou le voit, beau- 

 coup de ressemblance avec la Ph. sedentaria, mais elle s'en distingue facilement par l'absence 

 de dent au milieu interne du doigt mobile. Nous lui avons donne le nom de Phronima 

 solitaria.» 



