202 Bulletin, Vanderhilt Marine Museum, Vol. Ill 



Genus: ANILOCBA Leach. 



Anilocra laticauda H. Milne Edwards 



Type : The type is recorded as inhabiting the Antillean waters and 

 being deposited in the Paris Museum. 



Distribution: Known from the Chesapeake Bay, off Maryland, 

 southward to the Straits of Magellan, as a parasite of Haemulon 

 plumieri (common grunt or cachicata), of E. arcuatum, of Upeneus 

 martinicus (yellow goat-fish), of Chromis marginatus marginatus 

 (Castelnay), of Ocyurus chrysurus, Bathy stoma rimator and of 

 Ahudefduf saxtalis. 



Material examined : One specimen taken at Bury Island, Bahamas, 

 January 21, 1923; one large ovigerous female taken in dredge at 11 

 fms., Casa Blanca, Cuba, August 22, 1924; 11 representatives of 

 young, free-swimming stages, Hogsty Key, British West Indies, Feb- 

 ruary 13, 1926, by the ''Ara/' 



Technical description: Body asymmetrical, thoracic region very 

 convex, transverselt, caudal fan rounded. 



Head: Triangular, anterolateral margins rounded, interorbital 

 space nearly twice as wide as the long diameter of the orbit ; eye small, 

 elliptical, postlateral in position, scarcely at all elevated above the 

 surface of the head; posterior margin of head slightly sinuate. Ex- 

 ternal antennae composed of nine stocky, tapering articles and reach- 

 ing to midway the margin of the second thoracic segment. The inner 

 antennae consist of seven articles, are about half as long as the outer 

 antennae. 



Thorax : The first thoracic segment is as long as the head and has 

 the anterolateral angles produced and closely appressed to the head ; 

 the second segment is half as long as the first segment ; the third seg- 

 ment is three-fifths as long as the first and the fourth segment is 

 equally as long as the first ; the fifth segment is subequal to the fourth ; 

 the sixth segment is one and one-third times the fifth; the seventh 

 segment is about as long as the fifth. The first, second and third 

 thoracic segments have their epimera rather broadly rounded; those 

 of the fourth, fifth and sixth and seventh segments are rather more 

 elongated and acuminate posteriorly, the last one being quite acute. 



Abdomen : The first segment is partly concealed ; the second to 

 fifth segments are subequal except that the lateral margins of the 

 second, third and fourth segments are broadly rounded, while that of 

 the fifth segment is obliquely truncated, with the postlateral angle 



