KONGL. SV. VET. AKADEMIKNS PTANDLINCAR. BAND. 22. N:0 7. 



207 



pedibns parium duorum prascedentium longiores; carpus spinis binis longis instructus; 

 metacarpus non serratus; dactylus longus. Pedes parium trium ultimorum duobu.s pr;ece- 

 dentibus vix longiores; femur quinti paris latissimum; carpus tibia multo brevior; meta- 

 carpus serratus; dactylus longus. Latera segmentorum plei post obtuse rotundata. Pe- 

 dunculus pedinn itri ultirai paris plus quam duplo longior quam latior. Telson semicirculare, 

 latius quam longius, dimidium segmenti ultimi uri longitudine »quans, pedunculo pedum 

 uri ultimi paris latius, ac diniidio pedunculi ejusdem multo brevius. 



The head is large, deep, and much longer than tlie first four perseonal segments together. 

 The first two perccona] segments are coalesced, the following are free. The carpus of the 

 first pair of percvopoda is scarcely dilated and verj' little produced. The carpus of the 

 second pair is only a little dilated, but produced; the front margin of the carpal process 

 is half as long as the bind margin of the metacarpus. The metacarpus of the first and 

 second pairs bas a single spine fixed on the front margin; the hind margin is serrated, 

 with simple teeth; the dactylus is long. The third and fourth pairs are longer tlian the 

 first and second; the carpus is provided with two long bristles; the metacarpus is not 

 serrated; the dactylus is long. The last three pairs are scarcely longer than the two 

 preceding; the femur of the fifth pair is very broad; the carpus of all the three pairs is 

 much shorter than the tibia. The metacarpus is serrated; the dactylus is long. The lateral 

 parts of the pleonal segments are obtusely rounded behind. The peduncle of the last 

 pair of vropoda is more than twice as long as broad. The telson is semicircidar, broader 

 than long, and not more than half as long as the last ural segment; it is bi"oader than, 

 and not half as long as, the peduncle of the last pair of uropoda. 



Colour. Whitish red. 



Leiigtli. 4 — 6 mm. 



Hab. The tropical region of the Atlantic: off Barbadoes; the Caribbean Sea. The Indian 

 Ocean. (D. M.; F. M.; K. M.; P. M.; S. M.; U. M.) 



Syn. 1830. Lestrigonus Fahrei, H. MILNE EDWARDS. 



E. LucAS 



— »Extrait de Recherches pour 



servir k THistoire naturelle 

 des Crustacés amphipodes.» 

 Ann. des sciences nat. 

 Torne 20™^ p. .392. 



— 1838. Histoire naturelie des Aui- 



maux sans vertébres par J. 

 B. T. A. de Lamarck, 

 2"^^ éd. Torne 5"«, p. .305. 



— 1839. » 3"^ éd. Torne 2"% p. 369. 

 Histoire naturelie des Crusta- 

 cés. Tonie 3™«, p. 82, pl. 

 30, fig. 18. 



»Lestrigon». Dietionnaire uni- 

 versel d'Histoire naturelle, 

 par Ch. d'Orbigny. Torne 

 7™^ p. 320. 



Histoire naturelle des Crusta- 

 cés des Araclinides et des 

 Myriapodes, p. 235. 



1849. 



1851. 



