KONGL. 8V. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 207 



pedibus parium duorum pragcedentium longiores; carpus spinis binis longis instructus; 

 metacarpus non serratus; dactylus longus. Pedes parium trium ultimorum duobus praece- 

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

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

 dunculus pedum uri ultimi paris plus quam duplo longior quam latior. Telson semicirculare, 

 latius quam longius, dimidium segmenti ultimi uri longitudine requans, pedunculo pedum 

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



The head is large, deep, and much longer than the first four pergonal segments together. 

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

 first pair of perwopoda is scarcely dilated and very 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 hind margin of the metacarpus. The metacarpus of the first and 

 second pairs has 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 than 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 tehon is semicircular, broader 

 than long, and not more than half as long as the last ural segment; it is broader than, 

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



Colour. Whitish red. 



Length. 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. — »Extrait de Recherches pour 



servir a l'Histoire naturelle 

 des Crustaces amphipodes.» 

 Ann. des sciences nat. 

 Tome 20 me , p. 392. 



» ,) » — 1838. Histoire naturelle des Ani- 



maux sans vertebres par J. 



B. T. A. de Lamarck, 



2 me ed. Tome 5 me , p. 305. 



— 1839. » 3 me ed. Tome 2 me , p. 369. 



„ „ „ — 1840. Histoire naturelle des Crusta- 



ces. Tome 3 me , p. 82, pi. 

 30, fig. 18. 



„ „ „ R. Lucas 1849. »Lestrigon». Dictionnaire uni- 



versel d'Histoire naturelle, 

 par Ch. d'Orbigny. Tome 

 7 me , p. 320. 



„ „ „ j) 1851. Histoire naturelle des Crusta- 



ces des Arachnides et de9 

 Myriapodes, p. 235. 



