ORDER STOMAPODA. 201 



CoRONis, Latr. 



But a single species is known, Squilla eusehia ? Risso. 



The other stomapods of this family have the testa, as it 

 were membranaceous, diaphanous, covering the whole thorax, 

 folded laterally underneath, prolonged anteriorly like a sword, 

 or spine, and advancing above the support of the middle 

 antennae and the eyes. This support is capable of being 

 bent underneath, and of being enclosed in the case formed by 

 the cui've of the buckler. The posterior fins are concealed 

 imder the last segment. 



The talons of the great claws have no teeth. The second 

 articulation of the ocular pedicles is much thicker than the 

 first, in the form of an inverted cone. The eyes, properly so 

 called, are thick, almost globular. The fin-like appendage 

 of the feet resembles that of the squillee and gonodactyli. In 



Erichthus, Lair., Smerdis, Leach, 



The first articulation of the ocular pedicles is much shorter 

 than the second. The middle of the lateral edges of the 

 buckler is much protruded in the form of an angle, and their 

 posterior extremity presents two teeth. {Erichthus vitreus, 

 Latr.) 



Alima, Leach. 



The first articulation of the ocular pedicles is much longer 

 than the following, slender and cylindrical. The body is more 

 narrow and elongated than in Erichthus, the lateral edges of 

 the buckler are almost straight, or but little dilated. Its 

 middle is carinated longitudinally. Each of its angles forms 

 a spine, of which the two posterior are the strongest. {Alima 

 hyalina, Lat.) 



The second familv, that of 



