NO. 



26 



NEW MYSIDACID CRUSTACEANS TATTERSALL 



tennular peduncle (fig. i) ; and (3) the lateral margins of the telson 

 are armed with three or four short and two long spines between which 

 are three smaller spines graded in size (fig. 2). 



Fig. 2.—Paralophogasfer ailanticus n. sp. Telson and uropods. X 50. 



7y^^._U.S.N.M. no. 72866. 



A key to the species of the genus may be useful, as follows : 



Eyes small P.micropsCo\os\ 



Eyes large 



Antennal scale twice as long as the antennular peduncle 3 



Antennal scale one and a half times as long as the antennular peduncle. ... 4 



Rostral plate tridentate P- 9laber Hansen 



Rostral plate without median tooth, front margin slightly convex with a 



tooth at each corner P- nmcrops Colosi 



Rostral plate tridentate, lateral margins parallel ; telson with eight proximal 

 small spines and two distal large spines between which are three graded 



smaller spines P. ^an^oi Colosi 



Rostral plate tridentate, lateral margins curved; telson with three to four 

 proximal small spines and two distal large spines between which are three 

 graded smaller spines P- atlanticus Tattersall 



