706 



CRUSTACEA. 



though of less inequality. These differences and its parasitic habit 

 require the institution of a new genus. 



The legs are all similar in form and terminate in a small claw ; 

 the first pair is the shortest. The mandibles have a number of cor- 

 neous spines at apex ; and also below the apex, a second prominence, 

 placed obliquely, and having a truncate extremity, edged or set 'with 

 minute spines; this prominence is much stouter than the terminal 

 process of the mandible. The inner maxillae differ little from the 

 same organs in other Idotaeidae. 



The maxillipeds are five-jointed ; the first joint is very short be- 

 neath the second, but is broadly enlarged and prolonged on the outer 

 side, and bears a large lamella or palpus ; the second joint is stout, 

 and a little oblong, and its apex is prolonged in the form of a lamella, 

 which reaches to the last articulation ; the third very short ; the fourth 

 and fifth together nearly obovate, flattened on the inner side ; the fifth 

 joint largish and having a short ciliate or pubescent margin. 



The name of the genus is from e**Au?, a stranger. 



Epelys annulatus. 



Angusto-subellipticus. Caput transversum, medio fronte apiculato, an- 

 giitis rotundatis. Segmenta thoracis prominentia, transversa, longi- 

 tudine sulxequa, tribus posticis sublunatis. Abdomen 2-articulatum, 

 segmento primo brevissimo, fere obsoleto, valde angustiore quam secun- 

 dum; secundo scutellato, posticd triangulato, obtuso, lateribus fere 

 parallelis. Antennas breves, latitudine capitis non longiores ; internee 

 parce breviores, A-articulatce, articulo tertio paulo longiore; externce 

 ^-articulator, articulis brevibus, tribus ultimis paululo longioribus. 



Narrow subelliptic. Head transverse, front margin apiculate at 

 middle, angles rounded. Segments of thorax prominent, transverse, 

 nearly equal in length, the three posterior sublunate (seen from 

 above). Abdomen two-jointed, first segment very short, nearly 

 obsolete, much narrower than following; the second scutellate, 

 triangular behind, the sides towards base about parallel. Antennae 

 short, not longer than the breadth of the head ; inner sparingly the 

 shorter, four-jointed ; third joint a little longer than the others ; 

 outer five-jointed ; joints short, the last three a little the longest. 



