240 PROCEEDINGS OF THE NATIONAL MUSEUM. you 42. 



total length" (p. 7). But his figure, as well as the one here pub- 

 lished, shows that the cephalothorax is elliptical rather than oval 

 and of nearly the same width and length. A little further on the 

 same page he adds, "Palp at the base of first maxilliped long and 

 sharp." His figure and the one here given show that this "palp" 

 is really the first maxilla and is not connected at all with the "first 

 maxilliped." In describing the fourth legs he states that the last 

 joint has "on its inner border tliree setae." In his enlarged figure 

 of these legs he has represented four setae on the last joint, none 

 on the third joint, and one on the second joint. Of course the 

 setee are on the outer border instead of the inner, and in the present 

 specimens there are three on the last joint, one on the third, and 

 one on the second, in accordance with his description but at variance 

 with his figure. He says nothing about the egg strings and shows 

 only the stumps of them in his figure. But they are narrow and 

 threadUke and as long as the entire body. The eggs are thin and 

 very similar to those of Lernanthroims and other Dichelestiids, and 

 not at aU like those of Caligus. 



In the grooving of the dorsal surface of the carapace the sides of 

 the H are extremely irregular, the lower half being strongly convex 

 outward, while the upper half rims to a notch on either side in the 

 edge of the carapace. This is not like Caligus, but does resemble 

 that found in the Euryphorinae. 



The present specimens include two females with egg strings, taken 

 from the same host, Polynemus tetradactylus , at Batavia, Java. 

 They have received the catalogue number 42295, U.S.N.M. 



LERNANTHROPUS LAPPACEUS, new species. 

 Plate 34. 



Female. — General body form elongate and pear-shaped, consider- 

 ably widened posteriorly; cephalothorax ovate, one-fifth the entire 

 length, only two-thirds as wide as the remainder of the thorax; 

 carapace projecting strongly at the sides and in front and rolled 

 ventrally over the mouth parts and the fii-st two pairs of swimming 

 legs. 



Second and third segments thoroughly fused, with no signs of 

 demarcation, the two together barrel-shaped, with strongly convex 

 sides. Dorsal plate of the fourth segment twice the width of the 

 fused second and third segments, oval in outline, with a squarely 

 truncated posterior margin which considerably overlaps the bases 

 of the egg strings and the fourth and fifth legs. 



Fifth segment, genital segment, and abdomen short and broad, 

 but well defined; anal laminse short, conical, and unarmed. Egg 

 strings narrow and one-third as long again as the entire body; eggs 

 thin, about 150 in each string. 



