KONGL. SV. VET. AKADEM1ENS IIANDL1NGAR. BAND. 22. N:0 7. 



47 



2. THAUMATOPS LOISGIPES, C. BOVALLIUS, 1886. 



PL III, fig. 1—16. 



Diagn. Caput segmentis quattuor primis peraei conjunctis longius. Segmenta duo priora perm libera, 

 non coalita. Femur pedum 'per'cei primi paris artieulis quattuor sequentibus conjunctis 

 longius. Pedes quinti paris quain person et pleon conjuncta multo longiores, pedibus sep- 

 timi paris ter fere longiores; femur pedum quinti paris metacarpo multo longius. Femur 

 sexti paris femore septimi paris duplo longius. Ramus externus pedum uri ultimi paris 

 latitudiue pedunculi duplo fere longior. 



The head is longer than the first four pergonal segments together. The first two pergonal 

 segments are free, not coalesced. The femur of the first pair of pera'opoda is longer than 

 the four following joints together. The fifth pair are much longer than the perajon and 

 pleon together, and almost three times 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 twice as long 

 as the femur of the seventh pair. The outer ramus of the last pair of uropoda is almost 

 twice as long as the breadth of the peduncle. 



Colour. Whitish, pellucid. 



Length. 52—55 mm. 



Hab. Oft the West coast of Australia. (D. M.) Northern temperate region of the Atlantic, 

 at Lat. 59° 38' N., Long. 5° 24' W. (D. M.). 



Syn. 1886. Thaumatops longipes, C. BOVALLIUS. "Remarks on the genus Cysteosoma or Thau- 



raatops». Bih. t. K. Sv. Vet. Ak. Handl. Bd. 



11. N:o 9, p. 13; fig. 15—23. 

 » » » 1887 . "Systematical list of the Amphipoda Hyperiidea». 



Bih. t. K. Sv. Vet. Ak. Handl. Bd. 11. N:o 



16, p. 13. 

 » » » 1887 . »Arctic and Antarctic Hyperidsn. Vega-Exp. Ve- 



tensk. Iakttagelser. Bd. 4, p. 558. 



The head is broader than the peneon, and much deeper, it is fully as long as the 

 first four pergonal segments together, in specimen A. 13 mm., in specimen B. ] ) 12 mm. 

 long. The foremost part of the head is almost truncated, showing on either side of the 

 base of the antenna^ a broad, flattened, prominent tooth. From this tooth runs on each 

 side along the lower part of the head a row of 14 — 18 small, sharp-pointed, equidistant 

 teeth to the hinder margin of the head, just above the mouth-organs. On the under-side 

 of the head there are two short rows of smaller, similar spine-like teeths running from 

 the conical tubercles which represent the second pair of antenme. 



The eyes occupy the upper surface of the head, they are contiguos only on the an- 

 terior half of their length, widely separated at the posterior ends. The ocelli are placed 



Atlantic. 



') Specimen A. from the Indian Ocean, off the West coast of Australia; Specimen B from the Northern 



