66 



PROCEEDINO& OF THE NATIONAL MUSEUM. 



VOL. 53. 



LERNAEENICUS LONGIVENTRIS. new species. 



Plate 7, figs. G2-70. 



/lost and record of specimens. — The collection of the National 

 Museum contains 15 vials of this species from widely different hosts 

 and localities, as follows: 



Specimens. 



Host. 



Locality. 



Cat. No., 



u.s.n.mI 



1 female Caranx cn/sos 



Do Palinurichthys perd- 



j forrnis. 



Do i Pomatomus saltatrix. 



Do I Cybium mnculatum. . . 



Caranx species 



Caranx crysos 



Pomatomus saltatrix . 



Caranx hippos 



Dolphin 



Coryphaena equisetis . 



New England coast. . , 

 Woods Hole , 



2 females. 



3 females 



Do 



1 female 



] female type. 

 7 females 



2 females. 

 Do... 



3 females.. 

 2 females.. 

 12 females. 



Scomberomorus macu- 



latus. 

 Muyil cephalus 



Long Island Sound . . 



Woods Hole 



Vineyard Sound 



Woods Hole 



do 



do 



Atlantic Ocean 



Beaufort, North Caro- 

 lina. 

 Woods Hole 



Caranx crysos. 



do 



Dolphin 



Beaufort, North Caro- 

 lina. 



do 



Woods Hole 



Atlantic Ocean 



2107 

 C058 



6190 

 C192 

 6194 

 19727 

 42312 

 42346 

 47800 

 47801 



47802 



47803 



47804 

 47805 

 47806 



Specific characters of female. — Cephalothorax smoothly rounded 

 and elongated at right angles to the body axis, without horns but 

 with three protuberances or knobs. One of these is median, project- 

 ing from the posterior end of the cephalothorax and in line with it, 

 about two-thirds its length and half its diameter. The other two are 

 lateral, one on either side opposite the base of the larger median 

 knob, and are short and wide, little more than a slight swelling or 

 tubercle. 



The neck is long and narrow, but relativelj'^ much thicker than in 

 radiaius, nearly straight and decreasing in diameter to the point 

 where it joins the trunk. The latter widens abruptly from this nar- 

 rowed point and is cylindrical ; the portion representing the genital 

 segment is of the same diameter throughout and about one-quarter 

 as long as the neck. To its posterior end is attached the abdomen, 

 which is cylindrical, of the same diameter as the egg strings, and 

 nearly twice as long as the genital segment; the anal laminae are 

 minute and destitute of setae. 



The egg strings are one-third the diameter of the genital segment 

 and but little longer than the abdomen. As they approach ripeness 

 the embryos are colored a beautiful maroon, and this gradually 

 becomes more apparent in the strings. 



