16 CARL nOVALLlUS, AMPIHPODA IIYPEIUIDEA. 



1850. (Jlijdonia longipes, DANA. Tii. IT. Streets. 1877. xOoiitributions to thc naturul history of 



tlie Hawaiiiin and Fanning Islands and 

 Lower (lalilbrnia.» Bulletin of tlie United 

 States National Museum. 1877. N;o 7, 

 p. 124. 

 Tyrn » » C. Bovalt.ius. 1887. »Systeniatical list of tlie Aniphipoda Hy- 



periidoa». Bih. t. K. Sv. Vet. Ak. Handl. 

 Ed. 11. N:o 16, p. 5. 



Streets floo.sf not .atterapt to prove tho identity of his .specie.s with Dana'r, but as 

 it does not agrec \vith aii)' other ol' the known species I cite it here, using only tlip 

 characteristic of tli(3 uvopoda to coinplete Dana's decription. 



Dana says: 



There is a prominent angle on front of liead and a low angle över each of the 

 antenna^; but the front angle is not apparent in a vertical view, as the front margin, 

 which is in advance of the angle, is depressed below the upper snrface of the head. 



The eyes are as in Tyro gracilis. 



The first pair of avtennce are nearly as long as the bod}', a little stouter than in 

 Tyro f/racili.s. 



In the second and third jnnr.9 of pereiopoda the carpns is longer than either the 

 tibia or metacarpus. 



The seventh pair are longer than lialf the fifth. 



The posterior angles of the first two phonal segments are acnte, not trnncated. 



Streets says: 



The first pair of uropoda are longer than the second; both are lanceolate in shape, 

 and serrated along their edges. Tlie third pair are linear, and of the same length as the 

 first pair. The third pair carry exteriör rami, articnlating just above the middle of the 

 outer edge and reaching exactly to the half of the interiör ramus. 



G. TYRO BOREALIS, G. O. SÄRS, 1882. 



Oiagll. Corpiis flepressum, mm carinatiim. Caput dupld altiii.s quani longius, supine applanatum, 

 lobi.s lateralibiis mitiuti.s rotuiidatis. Anlennrf prinii pari.s dimidiain corporis longitudineni 

 haud assequentcs. Pedes perni primi et seciindi parium carpi,^ elongatis. Pedes qiiinti 

 pains pedibus sexti multo longiores; femur ante et post fortiter serratiim, avticulis tribus 

 sequentibns multo breviu.?, spinam ciirvatam, genu longiorem, gerens; tibla carpo pauUo 

 lirevior, earpn.* nietacarpo paullo longior. Pede.* septinii parLs tertiani parteni longitudinls 

 pediuii qiiiiiti pari.s haud asseqiiontes. Segmenta iiri duo idtiina coalita. Pede.s nri lati, 

 niinute serrati; inargines interni pcduin prinii pari.s spiuiferi. Kami externi trium parium 

 ininiitis.siiiii, rami interni peduneulis longiores. Pedes primi paris eeteris longiores. Telson 

 iiiiiiiuuim, triaugulare, acuminatum. 



