538 



EEPOBT OX THE ORDER STOMATOFODA—BtGELOW 



the telsoii oi- in the general proportions of the body. Otherwise, the 

 distinguishing- characters given by Berthold hold for my specimens and 

 1 am convinced that they represent two distinct species. As Berthold 

 was the first to separate these species we should nndoubtedly follow 

 his nomenclature, regarding the small-eyed form as 8. nepa, Latreille, 

 and giving- his name ^S". affints to the other. Berthold's description of 

 the latter is very complete, is accompanied by measurements and fig- 

 ures, and was published five years before de Haan's. I can not see that 

 de Haan had any warrant for replacing Berthold's name for this species 

 by one of his own, and the latter should be dropped. 



The similarities and differences between these two species as exhibited 

 in the collection before me are expressed briefly in the definition given 

 above and in the one which follows. 



SQUILLA AFFINIS, Berthold. 



S(fuiUa affmis, Bkkthold, Abhandl. kon. Gesellsch. Wiss. Gottingen, iii, p. 26. 



1845.— BiGELOw, Johns Ilopkius UiiLv. Circ, 106, p. 102, 1893. 

 SquiUa oratoria, DE Haax, Siebold's Fauua Japon. Crust., p. 223, 1850. 

 ? Sqiiilla oyatoria, Heller, Reise der Novara, Crust., p. 124, 1865. 

 ? SquiUa nepa, Mieks, Aun. and Mag. Nat. Hist. (5), V, p. 25, 1880. 

 SquiUa ncpa, BiioOKS, Voy. of the ChaUenger, xvi, ii, p. 25, 1886. 



Diar/nosis. — A SquiUa Avith large triangular eyes, the corneal axis 

 being oblique and as long- as or usually longer than the ])eduncular one 



and 0.05 times the length of the body; 

 the outer margin of the dactylus of the 

 raptorial claw not sinuate or only 

 slightly so; six teeth on the dactylus; 

 the rostrum slightly truncated and 

 provided with marginal carin<ie and a 

 median tubercle; five carina? on the 

 carapace, the median one not bifur- 

 cated for more than one-fourth its 

 length, and tlie lateral ones continued 

 into the anterior lateral spines, which 

 do not reach as far forward as the 

 suture between the rostrum and cara- 

 pace, the posterior lateral angles evenly 

 rounded; no ventral spines on the first 

 exposed thoracic segment, its lateral 

 l)rocesses and those of the next two seg- 

 ments bilobed as in 8. nepa; submedian 

 carina; jiresent on all except the first 

 segments of the hind body; crest, keel, 

 and symmetrical lines of pits on the 

 telson and six marginal spines, eight basal carina', and between the 

 former four to five submedian, se^'en to nine intermediate, and one lat- 

 eral denticle.* 



■ Fig. 22. 



CEPHALIC REGION OF SQDILLA AFFINIS 



Slightly eiil:ir(!.-.l. 



^ See remarks on Synonymy under S. nepa. 



