52 



CARL BOVALLIUS, AMPHIPODA HYPERIIDEA. I. 2. 



THAUMATOPSID^E. 



and anterior margins are minntely serrated, the inner is strongly serrated, showing four 

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

 outer margin is almost straight, with nine 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 broad as 

 the peduncle of the last pair of uropoda. 



3. THAUMATOPS LOVENI, C. BOVALLIUS, 1886. 



PI. IV, tig. 1—25. 



Diagn. Caput segmenta tria priora persei conjuncta longitudine requans. Segmenta duo priora percei 

 libera, non coalita. Femur •pedum perm primi paris articulis quattuor sequentibus con- 

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

 septimi paris baud duplo longiores; femur pedum quinti paris metacarpo multo longius. 

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

 pedum uri ultimi paris longitudine latitudinem pedunculi aequans. 



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

 pergonal segments are free, not coalesced. The femur of the first pair of perazopoda is 

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

 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 uropjoda is as long as the breadth 

 of the peduncle. 



Colour. Yellowish, pellucid. 



Length. 110 mm. 



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



Syn. 1886. Thaumatops Loveni, C. BOVALLIUS. 



"Remarks on the genus Cysteosoma 

 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». Bill. 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. 



