STALK-EYED CRUSTACEA 



39 



A 



developed. Eyes mobile. Walking legs of moderate 

 length. 



a. Flagellum of external antenna con- 

 cealed beneath the rostrum and not visible 

 from above. Walking legs have the last 

 joint but one not dilated and compressed. — 

 {Epiaitiis.) 



b. Flagellum of external antennae exposed 

 and visible from above at side of rostrum. 

 Walking legs have the last joint but one 

 dilated and compressed. — {^AcantJwnyx.) 



Epialliis. 



I. Anomalothir. 



Anomalothir .... Miers. 

 Anonialopus . . . . A. Milne Edwards, 



Stimpson. 



Carapace is elongated, almost subcylindrical. Rostrum 

 very long, slender, two-horned. Eyes without orbits, 

 immobile; pra^ocular spine small, acute, postocular spine 

 minute. External antennas exposed from above ; basal 

 joint narrow. Antennulary fossae large. Epistome two- 

 thirds as long as broad. Fourth joint of external 

 maxillipedes without any notch at the internal angle 

 where it articulates with the next joint ; external angle 

 prominent. 



First pair of legs, in the female, shorter than the 

 carapace. Walking legs have the first pair very long, 

 twice as long as the carapace, with the last joint nearly 

 straight, and three-fourths as long as the next joint ; last 

 two pairs shorter than the others ; terminal joint formed 

 for holding. Of very small size. 



Range. — Western Atlantic ; in deep water. 



