PARASITIC CRUSTACEA FROM BIMINI — PEARSE 353 



margins ; exopcd with four strong terminal spines and others on 

 posterior surface. Third legs flat, biramous ; exopod rhomboidal, 

 endopod three times as long and pointed. Fourth legs narrower, 

 biramous. Legs 3 and 4 extend beyond dorsal plate posteriorly. 



Measurements : Length 4.8 mm. 



Male. — Cephalothorax slightly wider and almost as long as the 

 remainder of the body ; both ends squarely truncated. Genital seg- 

 ment slightly narrower than preceding with two red spermathecae 

 and two setae just posterior to them. Caudal ramus four times as 

 l^Tig as wide, setose on lateral margins, bearing two short terminal 

 . tae, and two ventrally near the base. 



P'irst antennae 6-pegmented. Second antennae longer and stout- 

 er than that of female; with two stout spines on hook near its 

 base and several minute spines between these. First maxilla with 

 two terminal setae and some smaller terminal setae, also a basal 

 seta. Second maxilla with hook, spinulose near tip and bearing 

 two larger spines. Maxilliped stout, spinulose along margin of 

 penultimate segment opposite terminal hook, with a spine near 

 tip of hook. 



First leg with the exopod bearing five spines; endopod setose 

 on margins and ending in a long seta. Second leg with exopod 

 ending in a spinulose sucker; the endopod setose medially on basal 

 segment and bearing a long terminal seta. Third leg biramous, 

 endopod about one-third as long as exopod and mostly dorsal 

 to the genital segment. Right fourth leg uniramous (an abnor- 

 mality) and left leg biramous ; the endopod three-fifths as long as 

 exopod; the whole leg extends half its length beyond the caudal 

 rami. 



Measurements : Length 2.2 mm. 



Types.— Female, U.S.N.M. No. 88640 ; male, U.S.N.M. No. 88542. 



Host. — Two females and a male were taken from the gills of 

 muttonfishes, Lutianus analis (Cuvier and Valenciennes). 



Remarks. — This species resembles Wilson's (1932) L. longipes, 

 but it has the posterior dorsal plate of the female more deeply 

 cleft ; the fourth legs as not so long as in that species. The arma- 

 ture of the appendages also differs considerably. This species is 

 much smaller. 



LERNANTHROPUS HIATUS, new species 



Figure 72, e-g 



Male. — Body short (1.7 mm.) ; cephalothorax nearly half as long 

 as remainder of body. The caudal rami do not reach as far back 

 as the endopod of the fourth leg ; they are armed above with small 

 setae near their bases and tipped with three small setae. 



