372 



CARL BOVALLIUS, AMPHIPODA HYrKKIlDEA. 



l^HRONIMII)^. 



3. PHRONIMÅ SOLITARIA, F. E. GUERIN MÉNEVILLE, 1836. 



Pl. XVI, fig. 4—7. 



Diagn. Cajyut segmentis tribus primis pera;i paullulo brevius. Segmenta duo priora permi segmento 

 tertio paullo altiora. Processus tibialis jjedum permi secundi paris dimidio stipitis carpi 

 multo brevior. Pedes quinti paris pedibus quarti paris longiores; carpus lougior quam 

 latior; pi'ocessus carpalis tuberculo marginis inferioris longior; tuberculus maximus, integer, 

 crenulatus; metacarpus tubei'culo carens. Femur pedum septimi [jaris angustura, femore 

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

 Ramus internus pedum avi secundi paris ramo externe brevior. 



The hcad is a trifle sliorter than the first three perreonal segments together. The first two 

 peroional segments are a little deeper tlian the tliird. The tibial process of the second 

 pair of pe7'aiopoda is much sliorter than half the stem of the carpus. The fifth pair are 

 longer than tlie fourth; the carpus is louger than broad; the carpal process is longer than 

 the tubercle on the under margin of tiic 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 spöts on the lower parts of the body and on the femora of the perteopoda. 



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. 1836. Phronima solitaria, F. E. GUÉRIN MÉNEVILLE. 

 1888. .. megalodus, TH. STEBBING. 



Iconographie du Régue Aninial de 

 G. Cuvier. Crustacés, p. 21. 



»Eeport on the Amphipoda". Voy. 

 of H. M. S. Challenger. Zoo- 

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



Phronima solitaria was shortly described in 1836 by Guérin Méneville, 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 espéce, prise dans TOcéan qui baigne les cotes d'Amérique, assez 

 loin de Tembouchure de la Platå. Elle ressemble ä la précédente {Phronima atlantica), mais la 

 main de la cinquiéme paire de pattes est beaucoup plns longue et plus gréle, peu renflée vei-s 

 Fextrémité, avec la griffe simple, mais fortement renflée au milieu et une forte dent au coté in- 

 terne de la pointe opposée de cette griffe. Cette troisiéme espéce a, comme ou le voit, beau- 

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

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

 solitaria.» 



