﻿32 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



Family ACANTHOCOLPIDAE 



STEPHANOCHASMUS CASUS Linton 



In three Micropogon undulatus (Linnaeus) two, three, and two 

 trematodes were found in the intestines on July 10. In four Paralich- 

 thys dentatus (Linnaeus) there was one on July 31. 



STEPHANOCHASMUS DENTATUM (Linton) 



In a Paralichthys lethostigrrms Jordan and Gilbert three of these 

 trematodes were found in the intestine on July 24. 



Family ALLOCRE ADHD AE : Subfamily Lepocreadiinae 



MULTITESTIS BLENNII Manter 



A Hypsoblennius hentz (Lesueur) had four of these trematodes in 

 the intestine on June 22. 



MULTITESTIS INCONSTANS (Linton) 



One of four Chaetodipterus faber (Broussonet) had two of this 

 species in the intestine on July 31. 



LEPOCREADIUM ARCHOSARGI, new species 



Figure 8, b 



Body longer than wide (0.8 by 0.44 mm.) ; notched at the posterior 

 end ; flat, the anterior end very slightly tapered. Anterior two-thirds 

 of body covered with minute spines arranged in transverse and oblique 

 rows. The oral sucker is a little larger than the ventral sucker (0,11, 

 0.08 mm.) ; the latter is about one-third of body length from the 

 anterior end. A short prepharynx and a small pharynx (diameter, 

 0.04 mm.) are present. The genital pore is a transverse, median slit 

 just anterior to the ventral sucker. The testes are large, posterior to 

 the middle of the body and one is slightly anteriorad to the other ; the 

 cirrus sac is short. The ovary is anterior to the testes on the right side 

 of the body; the uterus contains five to eight eggs of large 

 size (0.14 by 0.06 mm.). The vitellaria extends across the posterior 

 end and along the sides as far forward as the oral sucker. Excretory 

 bladder extends anteriorly from the excretory pore and forks behind 

 the testes. 



Host. — Archosargus prohatocephalus (Walbaum). 



Type.— [J. S. N. M. Helm. Coll. No. 36965. 



Occurrence. — Nine specimens were taken from the intestine of one 

 of two hosts on July 10. 



This species differs from Manter's (1931) L. ovalis in the smaller 

 number of eggs in the uterus, in having the posterior end notched, 

 in being smaller in size, and in having the anterior part of the body 

 spinulose. 



