294 W. B. BENHAM. 



Family IV. — Moniligastrid^e. 



Fig. 12. — Moniligaster. a. The left upper figure^ genital 

 system. Modified from Horst's figure of M. houteni in 

 ' Notes from the Ley den Museum/ ix, pi. i, fig. 1^ in accord- 

 ance with Beddard^s more recent figures and descriptions 

 (' Quart. Journ. Micr. Sci.,' xxix, pi. xii, fig. 12 ; and ' Zool. 

 Anz.,' No. 318, 1889). sp. Spermatlieca, with its long duct, 

 in Somite ix. These are the '^ anterior testes " of Perrier. 

 s. Sperm-sacs — Perrier^s " posterior testes.'" sd. Sperm-duct 

 and ciliated rosette, pro. Prostate, o. Ovary, od. Oviduct. 

 OS. Ovisac, b. The right figure, alimentary system. Modified 

 from Perrier's figure of M. deshayesii in ' Nouv. Arch. d. 

 Mus. d'Hist. Nat./ viii, 1872, in accordance with the more 

 recent descriptions of Beddard, Horst, and Bourne, who have 

 not observed Perrier's anterior gizzard, g. The characteristic 

 elongated gizzard region. The nephridia are after Horst. cce. 

 The csecum of the nephridial duct. c. The left lower figure, 

 the exterior of Somites x to xiii — the region of the clitellum, 

 showing the setse, nephridiopores, and male pores, which lie 

 between Somites xi and xii. 



Distribution : India, Ceylon, Sumatra. 



