KONGL. SV. VET. AKADRMIKNS HANDLINGAR. HAND. 22. N:(l 7. 47 



2. THAUMATOPS LONOIPES, C. BOVALLIUS, 1886. 



Pl. Ill, fio-. 1 — ic. 



Diagli. Caput segmentis quattuor priinis pertci oonjiinctis longiiis. Segmenta duo priora jv«wi libeva, 

 non coalita. Femiir peduin pevwi j)riiiii ])aris articuli.s quattuor .se(|iientibus conjunctis 

 longiu.s. Pedes quinti paris quain perseon et pleon conjuncta iiiulto longiores, pedibus sep- 

 tiini paris ter fere longiores; femur [)edum (piinti paris metacarjio nuilto longius. Femur 

 sexti paris femore septiuii paris diiplo longius. Itanius extcrnus juulum mi ultinii paris 

 låtit udine pedunculi duplo fere longior. 



The head is longer tlian the first four perteonal segments togetlier. The first two jyerceoiial 

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

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

 pleon together, and almost three tinies as long as the seventh pair; the femur of the fifth 

 pair is much longer than the metacai"pus. 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 vropoda is almost 

 twice as long as tlie breadth of the peduncle. 



Colour. Whitish, pellucid. 



Lengtb. 52—55 mm. 



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

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



Syn. 1886. Tliauniatop.^ lonr/ijics, ('. BOVALLIUS. »Remarks on the genus Cysteosoma or Tliau- 



matops». Bih. t. K. Sv. Vet. Ak. HaiulL Bd. 

 11. N:o 9, p. Vi, fig. 15—23. 

 « » » 1887. »Systeniatical list of the xVmphipoda Hypenidea». 



Bih. t. K. Sv. Vet. Ak. Haiidl. Bd. 11. X;o 

 IG, p. 13. 

 » » » 1881 ■ »Arotic and Antarctio Hyperidsu. Vega-Exp. Ve- 



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



The head is broader than the pera?on, aiul iniich deeper, it is fully as long as the 

 first four peraional segments together, in speciraen A. 13 inm., in specimeii B.^) 12 nnn. 

 long. The fbreinost jjart of the head is almost truncated, showing on either side of the 

 base of the antennas 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 antennas 



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 



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

 Atlantic. 



