52 



CARL BOVALLIUS, AMPIIIPUDA HYPKRIIDEA. I. 



THAUMATOPSID^. 



and aiiterior inargitis are iiiiiiutcly serrated, tlie inner is strongly serrated, showing four 

 teeth. The peduncle of the last or third pair is not twice as long as the outer rainus, the 

 outer margin is almost straight, with ninu teeth, the anterior margin smooth, the inner with 

 eight teeth; the outer ramus is scarcely longer than the inner, narrower, and almost twice 

 as long as the breadth of the peduncle, smooth on the margins; the inner, coalesced ramus 

 is fully twice as broad as the outer, minutely serrated along the outer and anterior mar- 

 gins, strongly serrated along the inner, with eight teeth. The uropoda contain large 

 glands. The length of the first pair of uropoda is 9,5 mm. (spec. B.), or 10 mm. (spec. 

 A.), of the last pair 8 mm. 



The telson is small, more broad than long, rounded behind, and half as bi'oad as 

 the peduncle of the last pair of uropoda. 



3. THAUMÅTOPS LOVÉNI, C. BOVALLIUS, 1886. 



ri. IV, fio-, 1—25. 



Diagn. Caput segmenta tria priura perrei conjuncta longitudine icquans. Seginenta duo priora percEi 

 libcra, non coalita. Femur pedum percei primi paris articulis quattuor sequentibus con- 

 junctis brevius. Pedes quinti paris quam perason et pleon conjuncta breviores, pedibus 

 septimi paris baud duplo longiores: femur pedum quinti paris metacarpo muho longius. 

 Femur pedum sexti paris femore pedum septimi paris paiillo longius. Ramus externus 

 pedum uri ultimi paris longitudine latitudincm pedunculi asquans. 



The head equals the length of the first three perajonal segments together. The first two 

 peraonai segments are free, not coalesced. The femur of the first pair of pjerceopoda is 

 shorter than the four following joints together. The fifth pair are shorter than the perseon 

 and pleon together, scarcely twice as long as the seventh pair; the femur of the fifth pair 

 is much longer than the metacarpus. The femur of the sixth pair is a little longer than 

 that of the seventh. The outer ramus of the last pair of uropoda is as long as the breadth 

 of the peduncle. 



Colour. Yellowish, pellucid. 



Length. HO mm. 



Hab. The Indian Ocean (S. M.). One specimen, a male, taken by the Swedish Captain Mellenboeg. 



Syn. 1886. Tkaumatops Lovéiii, C. BOVALLIUS. 



— »Remarks on the genus Cysteosorna 



or Thaumatops». Bih. t. K. Sv. 

 Vet. Ak. HandL Bd. 11. N:o 9, 

 p. 10, fig. 1—14. 

 )> 1887 . »Systematical list of the Amphipoda 



Hyperiidea». Bih. t. K. Sv. Vet. 

 Ak. Handl. Bd. 11. N:o 16, p. 15. 

 Th. Stebbing. 1888. »Eeport on the Amphipoda». Voy. 

 of H. M. S. Challenger. Zoo- 

 logy. VoL 29, p. 1334. 



