<ii=. 



332 STALK-EYED CRUSTACEA 



B. Carapace quadrangular, oval, or 

 subtriangular. 



b. Fifth pair of legs (sometimes the 

 fourth pair) subdorsal and prehensile. 



b^. Eye-stalks very long and thin ; 

 orbits not well marked. 



U^. Antennules not capable of retrac- 

 tion into special foss;e. — {Honiolidcr.) HomoUaa:. 



Family I, Dromidse. 



Droviidcs. . . . Dana, Henderson. 

 Droniiens . . . H. Milne Edwards. 



Carapace subglobular, rarely flattened. Legs of 

 moderate size, cylindrical ; the fourth and fifth pair 

 (fifth only in Dynomenc and AcantJiodromia), short, 

 subdorsal in position, usually prehensile. Eyes capable 

 of retraction into well-defined orbits : internal antennaj 

 folded in special fossae. Males of many species, perhaps 

 all, with the vasa deferentia protruded from the coxal 

 joint of the last pair of legs, and forming tubular pro- 

 longations. 



Range. — Warm and temperate seas, in shallow and 

 moderately deep water. Many members of this family 

 are protected more or less by some animal growing on 

 them, or by shells. 



Synopsis of the Genera. 



A. The fourth and fifth pair of legs have a subdorsal 

 position. 



a. The last two pairs of legs subchelate. 



a^. Sternal sulci in the female not approximated, only 

 produced as far as the segment which bears tlie second 

 pair of legs. — {Droinia^ 



