

7g4 CRUSTACEA. 



minis parce minoribus, ultimo scutiformi. Caput subtriangulatum, 

 segmsnto proximo parce angustius. Oculi pergrandes. Bpimerm seg- 

 mentorum abdominis triquetral, non spiniformes. Lamella? caudales 

 ciliatw. 



Body narrow and long elliptic, not interrupted at base of abdomen 

 (abdomen not being here narrower than thorax), segments of thorax 

 subequal, those of abdomen sparingly shorter, the last scutiform. 

 Head broad subtriangular, but little narrower than next segment. 

 Eyes very large. Epimerals of abdominal segments triquetrous, not 

 spiniform. Caudal lamellae ciliate. 



The species of ^Egathoa have the general habit of an JEga, although 

 with the large hooked claws of Cymothoa. The abdomen and thorax 

 are so evenly continuous, that no subdivision into these two parts is 

 apparent in a dorsal view, and it is necessary to count off the thoracic 

 number before pronouncing which is the first abdominal. The sides 

 of the thorax form an unbroken line without projecting spines or 

 teeth. In the breadth and size of the head, as well as the ciliate 

 caudal lamellae, they are unlike the Cymothoinae; while in the non- 

 ciliate branchiae and other characters, they are related to that group. 



iEGATHOA MACROPHTHALMA. 



Oadi pergrandes, latera capitis omnino tegentes, antice bene approximate 

 super caput angulati. Caput non transversum. Styli caudales sub- 

 cequi, abdomine vix longiores, extemo parce longiore et angustiore, 

 interno lato, recti truncato, angulis rotundatis. 



Eyes very large, quite covering the sides of the head, and approaching 

 one another rather nearly anteriorly, on top of head having an 

 angle in the outline. Head not transverse. Caudal stylets hardly 

 longer than abdomen, subequal, the outer little the longer and 

 narrower, inner broad and straight truncate at apex, with the angles 

 rounded. 



Plate 50, fig. 12a, animal, enlarged three diameters; b, oblique 

 side view of part of abdomen, showing epimerals; c, leg of fifth pair; 

 d, leg of seventh pair; c, caudal stylets. 



