')")(; in:i'()Rr of ('()>[missioxer of fish and fisheries. 



white (»r citMiii color, a lew were leiuoii-yeilow, and a few orange- 

 yellow. The speeinicn Ironi the cliul) was ii male G mm. in length and 

 of a rusty yellow color. In a leAv eases external jjores. with elevated 

 thickened borders, were observed, similar to what I have recoixled in 

 E. agilis (Report of Commissioner of Fish and Fisheries, 188G, \>. 490). 

 One of these is shown in Fig. 40, The bodies of the alcoholic speci- 

 mens are arcuate; the proboscis is usually inclined nearly at right 

 angles to the body; the terminal aperture of the female is lateral near 

 the i)osterior end. The lemnisci are proportionally longer in the males 

 than in the females. The length is not well shown in Fig. 38, which 

 was sketched from a specimen in glycerin, in which the lemnisci did 

 not show i)laiuly. They frequently extend far beyond the first testis, 

 and are, moreover, often more or less folded. The testes are large, 

 oblong, and api)roximate. The vas <leferens is large; the prostatic sacs 

 appear to be represented by a single elongated gland lying parallel 

 with the vas deferens; the ejaculatory duct and bursa are both rela- 

 tively large. 



The ovarian masses are ellipsoidal. The dimensions of a typical mass 

 were, length .14 mm., other diameters about .07 mm. The fusiform 

 endjryos were .035 mm. in length, and .015 mm. in breadth. The outer 

 cells of the ovarian masses are the largest and are micleated. 



The body wall near the anterior end is thin, as shown in Fig. 36. 

 Towards the median and posterior region the subcuticular fibrous layer 

 thickens greatly and contains the relatively large branching vessels of 

 the water-vascular system. Some of the latter may be seen in optical 

 section in Fig. 38. 



The following measurements were obtained from tyjncal alcoholic 

 specimens: 



Measurements. 



Male. 



mm. 



Length | 6. 00 



Lenfitli f>( proboscis- (). 25 



Diameter oC proboscis 0. 20 



Lengtli of proboscis slioath 0. r)0 



LengtlT of lemnisci i :i. 00 



Length of largest hooks on proboscis 0. 07 



Female. 



mm. 

 10.00 

 0.15 

 0.15 

 0.40 

 1.50 



