Fig. 343.—Ovum of Toxascaris limbata, with thin albuminous en­ve­lope. Mag­ni­fied.

Fig. 344.—Transverse section through the head part of Belascaris cati from the cat, with the lateral wings. In addition, one may note the four fields of muscles, the longitudinal lines with the œsophagus in the centre. Mag­n­ified. (After Leuckart.)

Genus. Belascaris (Βέλος, an arrow), Leiper, 1907.

Body anteriorly bent ventrally, cuticle coarsely striated. Œsophagus with a distinct bulb. Tail of male conical. A papillæ-bearing protuberance behind the anus. Testis in anterior half of body. Vulva in anterior part of body. Eggs corrugated.

Belascaris cati, Schrank, 1788.

Syn.: Belascaris mystax, Leiper, 1907; Ascaris mystax.