1894. 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



537 



would apply eciually well to any SqiiiUa related to S. manfi.s, and it seems 

 to be the i^eneral opinion of the zoologists that followed liini that bis 

 figures are unreliable. We may, therefore, follow the general usage 

 and give to Latreillc tbe credit of first clearly distinguishing the Medi- 

 terranean from the Indian si)ecies. 



Turning now our attention to S. oratoria, De Haan, the most promi- 

 nent synonym of aS'. nejja given by Miers, we find that Heller (18G8) 

 separates forms under tbese two names, but as noted by Miers, does 

 not give bis reasons for doing so. Dana (185l>) reports tbis species 

 from Singai)ore, but bis sbort description contains notbiug to dis- 

 tinguisb it from />'. nepa. De Haan's original description (1850) is a 

 sbort one in Latin and contains nothing tbat is Jiotalso trueof <S'. nepa, 

 lu bis analytical key he se])arates tbe two by tbe difference in tbe 

 length of the anterior lateral angles of the carapace. So far Miers 

 appears to be right in regarding the two as sym^nyms, but De Haan's 

 figure difi'ers from the one of Ileibst referred to by Latreille in ]'ei)resent- 

 ing tbe animal as baving large triangular eyes. Moreover, De Haau 

 gives IS. affinis, Berthold, as a synonym of >S'. oratoria and when we 

 refer to Bertbold's paper (184.")) we find what we were seeking, a clear 

 distinction between the large eyed and small-eyed forms of *S'. nrpa. 



Bertbold founde<l bis si)ecies, *S'. affiuis, ui)on some specimens that be 

 purcbased from a ship that had been to China. In his mnsenm be 

 found an old specimen marked ^'. (li(jifalis that corresponded to the 

 descriptions of S. nepa given by Latreille and by .Milne-Edwards. 

 Comi^aring tlie two be found tbe following difierences: 



SqutUa ((ffuih, Bkhtiioli>. 



The cornea lucasures obliquely 2i"'. 



Tlie upper end of tlie peduncle reaches 

 nearly, to the upi)er end of the cornea so 

 that the latter is placed obliquely above 

 or below the peduncle. 



The rostrum has ;iu uitturned outer 

 margin . 



The anterior bifurcation of the median 

 carina of the carapace reaches backward 

 only one-tilth of its length. 



The anterior lateral angles of the cara- 

 pace do not extend beyond its anterior 

 frontal border. 



The denticles on the telson are swoller. 

 and are arranged oblicjuely nnterior pos- 

 teriorly. 



The whole l)ody is thicker, rehitively 

 to its length broader and higher. 



The last joint of the raptorial claw is 

 slightly bent, but not sinuate. 



SquiUa iieji((, Latkeillk. 



Only li'". 



The upper end of the i)eduncle hardly 

 reaches any farther forward than the 

 other, so that the cornea is placed directly 

 in front of the peduncle. 



The rostrum has no such upturned 

 border. (See marginal carina shown in 

 tig. 21). 



This bifurcation reaches backward 

 nearly half the length of the carapace. 



These angles are strongly produced so 

 that they extend beyond this border. 



The denticles have no swollen eleva- 

 tion and point directly backward. 



The body is more slender, less high 

 and broad. 



Tlie last joint of the raptorial claw has 

 the proximal half of its outer margin 

 j strongly sinuate. 



Both sets of my specimens bave rostra witb carinated margins, and 

 I fail to find any essential differences between tbem in tbe denticles on 



