TcnVNSKM) AM) WKIMuKK IIIK. MIHDs. IM 



validitv' «>f all of tin- dilTfn'Ucrs (tiitliunl l»y Mr. Matlicws, \vlii<'li 

 apparrntly an* hast^l (tiily <iii Liinasd timn.sii and I,. Uijiixmtnt. His 

 alli'^r<'<l <lilTi'r«'H<'«'s will In* tak«'ii up and coiisidcnvl in turn as he has 

 pvfii tlu'ni. Tlu- Itill in tlu' sprrics liumsn is jonjicr than in huiniiHtira 

 and InpjHniica, hnt shorter tlian in fnUm. In limnsn llu* hill is more 

 slender and less rohiist than it is in fcdoa, while it is nearly straij;ht 

 in liinosn, slij;htly U|)turned at the tip in InjijHUiira, hannastirn, and 

 fnhxi. The jjnwve on the upper inandihh' varies sli^jhtly in h-n^'th 

 in all four species, hut shows no speeilie diir<'renees in its dev<*lo|)nient. 

 With rejjard to the lep< linioM has the lower extremities relatively 

 sli^'htly lonpT and somewhat mop' slender than in the other three 

 spivies under discussion. The tarsus in frdtKi is as lonj; as it is in 

 limosa, hut the lep in the former is heavier and more bulky, and when 

 compared with the winjj is relatixely slightly shorter than it is in 

 limosa. The len^'th of the crus when compared with the middh- toe 

 without the claw may be more or less as it varies iiirli\idually. The 

 mejisurement of the tarsus compared with that of the middle toe is 

 also a variable factor, and may be more or less than twice the midtlle 

 toe without tlu' elaw, depending' upon the condition of the individual 

 speciwien. The len<i;th of the tarsus varies also when comi)are<l with 

 the length of the winp according to the specimen in hand, and may 

 ecpial more or less than one third of the wing, irrespective of species. 



The scutellation of the front of the tarsus shows no constant ditfer- 

 ence in the four si)ecies under consideration. In general the scutes 

 are transverse on the lower tarsus, and di\"idcd or broken toward the 

 tibia. 



The distance tiiat the broken .scutes extend down the iront of the 

 tarsus varies individually in all the species, and in addition there is a 

 tendency for single scutes on the front of the tarsus below the area to 

 become broken or divided. The development of the claw of the 

 middle toe is also a \ariable character in spite of wliat has been said 

 to the contrary. It is usually more slender in llnio.sa than in the others, 

 and seems always to be slightly more elongate in tiiat species; but 

 may be produced also and even pectinated in ImnnaMira and fcdon, 

 while the outer margin is often thin and distinctly crenulated in htp- 

 ponica, with pectinate divisions indicated in some specimens. 



To sum up the discussion as gi\en above the valid differences 

 between these proposed genera are apparently as follows: — 

 a. Legs relatively slightly longer, more slender; toes relatively 

 slightly more slender; l)ill nearly straight, not distinctly up- 

 turned at distal end, somewhat flattened near tip Liinosa. 



