62 



DUJ., 1845 cannot be considered aught but 

 a synonym of Cncullanus MUELLER, 1777 

 (type: Cucullonus cirrafiis MUELL, 1777) 

 and also that the genus Cncullanus DUJ.» 

 1845 ought to be named Cncullanus RAIL- 

 LIET & HENRY, 1915 type-species Cncul- 

 lanus lacnstris ZOEGA Mlb -Cncullanus 

 elegans ZEDER, 1800. 



in the same year, TRAVASSOS showed 

 the necessity of excluding the genus Dacni- 

 tis DUJ., from this familv wliich should 

 rather be called Cncullanidae than Dacniti- 

 (lae, as LANE thinks on account of the fol- 

 lowing characteristics. 



Cuciillanidae nov. fam. 



(nee DIESING, 18Ó1. Camallanidae, 

 RAILLIET & HENRY, 1915) 



Púlymyarians. Mouth with two lips. 

 Oesophagus with dilated anterior extremi- 

 ty forming a sub-oral capsule. Bulb wanting. 



Male: S:cker without chitinous rim; 

 two spicules with accessory piece. 



teníale: Vulva near middle of body. 

 Uterus duplex. Eggs hatched out. 



This family includes only one genus: 

 Q/(7///fl«HS MUELL. , 1777. We do not accept 

 LANE's genera Senadacnitis and Bnlboda- 

 cnitis, as the presence of the saw-like teeth 

 on the rim' of the oral capsule characteristic 

 of the first-named genus, exists in all the 

 representatives of this group. The cephalic 

 dilatation justifying the name of Bulbodacni- 

 fis does not seem to be a generic character 

 as it is found in one species. 



Genus CUCULLANUS (MUELLER, 1777) 

 RAILLIET & HENRY, 1915 



(For list of synonyms see portuguesa text p. 70). 



Diagnosis: 



Cncullanidae: Cephalic extremity gene- 

 rally turned towards dorsal surface. Mouth 

 ellipsoid with large dorso-ventral axis, limi- 

 ted by two lips with saw-like chitinous 

 apparatus and three papillae above them. 

 Oesophagus rectilinear, anterior part dilated 

 in sub-oral capsule, posterior half club-sha- 



ped; bulb absent. No lateral membranes. 



Male: Sucker, small, spindle-shaped, with- 

 out horny rim, slightly muscular. Spicules 

 two, equal as a rule, not exceeding the pos- 

 terior limit of sucker; accessory piece. Cau- 

 dal alae rudimentary, sometimes absent. 

 Caudal papillae arranged in two longitudinal 

 rows, never more than 11 pairs. 



Female: Vulva very prominent, opening 

 in posterior half of body. Ovijector turned 

 towards cephalic extremity. Uterus dichoto- 

 mous v^ith diverging ramifications. Eggs 

 ellipsoid with smooth and very thin shell. 

 Embryo developed when eggs laid. 



Habitat: Intestinal tube of fishes. 



Type-species: CUCULLANUS CIRRA- 

 TUS MUELLER, 1777. 



The genus Cncullanus includes 22 spe- 

 cies at the present date, two of which are 

 Brazilian. Some of these species are not 

 well defined, there being some doubt as to 

 their identity. Not being in possession of 

 all the papers and treatises on the subject, 

 I cannot attempt to draw a conclusion con- 

 cerning them. To facilitate the study for 

 those who, later on, may be interested in 

 these nematodes, 1 give a list of the species 

 in the littérature which I was able to obtain 

 and which should be consulted. (See Portu- 

 guese texte p. 71). 



Brazilian species of the genus CUCUL- 

 LANUS: 



1. Cucnllanus pulcherrimus BARRETO, 



1918. 



2. Cucnllanus dodsworthi n. sp. 



CUCULLANUS PULCHERRIMUS 

 BARRETO, 1918. 



PI. 44, Figs. 1 e 2. 



Length: 13 mm.; width: 

 0,445 mm. measured 

 Dimensions at middle of body. 



Length: 15,9 mm.; width: 

 0,472 mm. at height 

 of vulva. 



