[43] ENTOZOA OF MARINE FISHES OF NEW ENGLAND. 495 
recognized, which was probably the spiculum. This enlargement of 
the genital apparatus opened into a larger oval cavity in the extreme 
posterior end of the body. This was evidently the male bursa, but 
was still closed by the investing body-membrane. 
In some specimens which had been stained and mounted ¢m glycerine, 
bodies which looked like the lemnisci were discovered. These were 
paired organs, very long and slender, tapering gradually to near the 
posterior end, which was bluntly rounded. Their attachment was _at 
the base of the proboscis sheath. In one specimen the attachment 
was by a short ligament. The general appearance of these organs was 
much like that of the lemnisci of ZH. agilis, but their attachment at the 
base of the sheath, instead of near the base of the proboscis, makes their 
indentification as lemnisci doubtful. 
In a series of thin longitudinal sections made from one of these worms 
a cluster of spherical, granular masses was found lying just back of the 
base of the proboscis sheath and apparently supported by the suspen- 
sory ligament. These masses were each about 0.025™™ in diameter, 
and each contained a number of smaller cells. It is probable that these 
represent the early stages of the ovarian masses peculiar to this order. 
The proboscis sheath is thick-walled and made up of two layers, the 
outer dense, about 0.05™™ thick; the inner loose in texture and 0.032™™ 
thick. From the base to about the middle of the sheath these layers 
are close together; from that point to the base of the proboscis they 
separate slightly, but unite again at the base of the proboscis. <A re- 
tractile ligament extends from the proboscis back through the neck, 
where it divides into two branches, which continue to the base of the 
sheath, where they are attached. The sheath extends to the third or 
fourth row of ventral spines. 
An oblong granular mass was noted about the middle of the probos- 
cis, seen in a thin section, and’ on its inner wall. A round granular 
mass about 0.07™™ in diameter was seen near the base of the neck in 
one section. I could find no indication of a ganglion in the base of the 
proboscis sheath, 
Measurements of mounted specimens. 

| 



Dimensions. i No. 1. | No. 2.| No. 3.| No. 4. 
mm, mm. | mim. | mm, 
Bare hie AP CCHNO ae. see na agen crek Gated caweacued bu waa saSe nes 6.40 | 7.80) 9.20 8. 20 
Length of proboscis ........-.-....- Renee e ee selon ee cicieae ween etaee 1,5,20),}), 0. 90, Bee Wwe mee} 
Peau OL PLOVONCIS HEAT ANOX oy seas a ccc besas scenes l-sacneancusacewoes 0.44 | 0.48) 0.52 0. 46 
aasault Of PIODOSCIS: AL PASO ase asses tans cats oes ccadelsaceaoesaeoe aes 0.26 | 0.32} 0.46 0. 36 
Bron Genod Hod y at, ANTEMOL NS: 2 Seen pisos Seeks cise as seal eh sekkneces eee ay. ORS0F ee Sy Gost 
Sree TOTO Vr AL MACON ct aes nee ase aed clnawlnamaicegatieden oa caeat oe 0.54] 0.92] 0.74 0. 80 
Breath of body abtiposterior: 6. ).7-L se sees bs sees heat becccaceccekideccee 0.30 | 0.46} 0.40 0. 40 
PERCE TO DOSCIA SHOAL Mura e ae e eel cos ee de ene ad ae eke DP 80\ ts <2 Soa eee 
Cho) Gg® UT SEAR py oi Sols Toa aes eS Cee ee eet ae erg | Ree eeerer (aa SF Gn 6s 0. 36 
PMOL OLLOWwSs Of SPUlOSOM DOs wane csc.) cece doateens wes He Geceecck | A eee | ee 18 



Nos. 1 and 2 were from Cynoscion regale, No. 3 from Pomatomus salta- 
trix, and No, 4 from Paralichthys dentatus. 
