NO. 1560. PARASITES OF BERMUDA FISITES-LIXTOX. 89 



distance from first to second testis 6; lemnisci extend about 5.4 back 

 of posterior end of sheath, diameter 0.15; testis, kMigth 1, diameter 0.5. 



Lenoth of female, mounted in balsam, 54; ovarian masses, length 

 0.3, diameter 0.12; embryos 0.075 by 0.024. 



This species is near J^. jnv'sti.'^, in external appeai'ance. )>iit differs in 

 the greater length of the lemnisci. The genitalia of the male are also 

 much simpler; furthermore the species which I have found in a num- 

 ber of the Beaufort iishes and have recorded under the name K jirisfis^ 

 is characterized l)y having a circle of hooks at the base of the proboscis 

 which are longer than the other hooks. 



Adult stage. — The adult worms were found in but one host: 

 MycterojMrea apiuu intestine. 



July 22, numerous. One of the largest specimens, after having 

 been placed in fresh water, where it became turgid, measured 50 nun. 

 in length. Among the preserved specimens a male measured 42 mm. 

 and a female 54 nun. 



hnmature stage. — Immature forms, referred to this species, were 

 found in the following hosts encysted in the viscera: 

 Bodianus fulvus 2>i(nctatu!<. 



July 22, three, on viscera, in thin connective tissue capsules incrusted 

 with yellow pigment. One was removed from a cyst which was tilled 

 with dark-brown waxy secretion. 

 Calainus calamus. 



Jul}^ 16, ten, encapsvded on the viscera. When these worms were 

 liberated from the thin cysts which enveloped them they were col- 

 lapsed and the proboscides were retracted. Placed in fresh water 

 they became plump and the proboscides were evaginated. July 18, 

 two; August 3 and 7, numerous, on viscera and mesentery. Two of 

 these immature forms were mounted in l)alsam and proved to be far 

 enough developed to show the rudiments of various organs. The 

 testes in this case were situated close together and back of the sheath 

 a distance about equal to the length of that organ. In the female 

 a small cluster of globular l)odies at the posterior end of the sheath 

 evidently represents the rudiments of the primitive <^^<^ masses. 



The body is largest at the base of the sheath, wdience it tapers each 

 way. Proboscis slightl}^ fusiform, one side straight or very slightly 

 concave, the other convex, usually deflected in the direction of the 

 coiivex side; about 20 hooks in a vertical row and 22 or 23 vertical 

 rows, those near the base of the proboscis more slender than the 

 others. Neck smooth and conical. Anterior end of body with about 

 20 rows of spines. These, on account of the manner in which they 

 penetrate the cuticle, appear sagittate in front view. Sheath fusi- 

 form; longer than proboscis; lemnisci appear to bt; long and slender. 

 Dimensions of female mounted in balsam, in millimeters: Length, 12; 



