PAEASITES OF FISHES OF THE WOODS HOLE REGION. 457 



Lobotes surinamensis, I'Vnslici: 



ACANTIIOCEPHAI.A. 



1. Krhinnrliynrlma prixlh Ruiloli)lii. Intestine. Variety li'iuiiconiis. St, pp. .'i.31-.532, ]>!._ i.vi, liirs. 



- :«1-ll. anil pi. i.vii. fiirs. 42-5:!. 



NEMATODES. 



2. Iinnifitiiri riiiiiiiliiili- (Asniri.f). Intestine. Collected Ang. 6, I8S7. [PI. xii, tigs. 140-142.] 



The worm is; finely wrinkleil transversely, tapers equally to head and tail; the tip of the latter is 

 eunii-al an<l covered with niinnte Ijristle-like bnt short papillte. Dimensions in millimeters: Length, 

 11.2.T: diameter of head 0.12, 1 mm. back of liead 0.:!2, maximum 0.:W, 1 ;inn. from posterior tip 0.27, 

 at anal ajiertnre 0.11; length <<i upper lip, O.OS; distance from anal aperture to posterior tip, 0.] 1; 

 length of o'sophagus, 2.1fi. 



3. rclillnfniuiiHt f/liihirtps \Uh\iA[:]i\. IVrildUcum. Aug. .S and 6, 1SS7. [PI. .win, figs. 209, 210.] 



Two sj)ecimens in the first lot, .^lO nun. and .580 nin\. in length and 1.4S mm. in diameter. They 

 are of nearly uniform diameter throughout and bluntly rounded at each end. The intestine is dark- 

 brown for two-thirds of its length, white for the remaining third. It ends lilindly at its posterior 

 extremity. When the worm wa.s subjected to pressure the young were discharged in vast numbers 

 from a point about 1 mm. from the anterior end. 



Dimensions of endiryos in millimeters: Length, 0.4; <liameter at larger end 0.008, ina.xinium 

 0.01:3; smaller end attenuate, appearing as a mere line even when highly magnified. There are four 

 dark-brown granular masses scattered along the middle region of the body and among them several 

 light-colored refractile bodies. A slight notch was noticed at the larger end of some. A favorite 

 position is with the larger end bent rather shar|)ly ; the slender end is often likewise bent, so that tlie two 

 ends point toward each other. Where they occur in the greatest abundance in the parent worm they 

 give to the latter a jilnmp, even distended, appearance. After they have been discharged the jmrent 

 is transjiarent, collapsed, much contracted, and quite irregular in outline, in places flattened and 

 shriveled. The larger end is said to be the anterior. I was not acipiaiutecl with this assertion at the 

 time of viewing the lixing worms, but supposed from the ai)pearance ami behavior of these embryos 

 that the slender end is the anterior. 



CESTOOES. 



4. Si/iibulJiriinii jili<'filli- lAnton. On viscera. 4, p. Sl.i. 



TREMATODES. 



5. (iiiMeruMoiniiin oralitm Linton. Intestine. 7, p. 297. (Linton: .I/i/i/o.s/dihh/// «)■/./>■»/«)■(■ Ku(lnl|ibi. 



6, pp. .541-542, i>l. LTV, figs. 2-5. ) 



Stenotomus chrysops, Si-nji. 



FOOT). 



A few food notes were given in my rejiort for 1898, pages 280-281. In the snminer nf 1.H99 I 

 examined 58 large and .51 small scup on 17 different occasions from July 20 to August :!0. In tlie 

 stomachs of the larger, small fish and sipiids were most frequently found, but annelids, crabs, shi-inqis, 

 aniphipods, mollusks, and hydroids wen? also noted. The smaller contained co|iepods and other 

 small crustaceans. Some small specimens from Katama Pay, .August :!0, hail in their stomachs 

 annelids, small crustacea, and small crepiduhe. 



Twenty-six scup were examined in the summer of 1900, with practically the same results as given 

 above, viz, fish, small crustacea of various kinds, annelids, small bivalve mollusks, and a young 

 sea-urchin. Intestinal contents of a specimen taken August 29 revealed plates fiDui the body walls 

 of a holothiirian. A few ova of DktomHm pi/riforme were seen in tliis material along with the 

 holothuriaii plates, spines of annelids, and vegetable debris. 



ACAXTIIOIEI'IIALA. 



1. Echiiiorliiinrhns >wiM Rudolphi. On viscera. 3, p. 527. 



2. EchiiiorJniiifhii.t mgiltifi'i- Linton. ,Iuly 24, 1900. See I, ]ip. 49:>— t9(i, jil. vi, ligs. 1.2. :{, jip. 5:',.5- 



5:l(!, pi. i.ix, fig. 80. 



