3f'> CAMFORNIA ACADEMY OF SCIENCES. 



not I'Xtcinliiij; ;i1m)vc ilic iiiiiclioii willi llu; divcrticiil.i. In j^ciicnil I'uiin llic .-|miiii;i- 

 tlieca resfiiihlcs licit of llic l'(illi)\viii<^ species, I). Bi'iilunn[,\t\\i the niitliiie ut the iii;iiii 

 sac is loss regular ami (lie ilivertieiila are larger, being ah<»ut one-iiall as long ii-s the 

 main sac ( ligs. oO to 32). 



Testoi. As usual there are two |i;iii- ul .-mall testes oceu|iying somite- x ami 

 liev (liflcr in nolhiiii^ jiardciilar I'rom those ot" the other two species of the 



XI. I 



iicnus. 



S'fK-rni-sdfx. Tlicic are I wo pair ol s|ierm-sacs, one eacli in -omites x ami xi. 

 Tlicv are loM<;, not veiv o|pa(|iic liodies, occupying a large part of lIu! somite, though 

 not llllim; it closely- The spermatophorie spherules are comparatively large, 

 "loliular. Tlie siierm-sacs are not gi'eatly lolx'd, extend consideraltiv in leniith from 

 the ilorsal to the ventral side, and are of more undecided shape than the sperm-sacs 

 of Deltanin ekf/aux and Benhami. They are also, comparatively, nimli larger (prin- 

 cipally higher) than in that species. It will he noticed that the sperm-sacs occupy 

 .somites x and xi, while in />(fnnln deynna, Ben/uuiii and ilnhln they occupy somites 



XI and xu. 



(hiinj and Oviduct (figs. 35, 36, 37, 38). As might be expected the ovary is 

 situated in xiii. It ofTors no characteristics of interest. There is no ovisac. The 

 oviduct is as usual funnel-shaped, either deeply cut or folded on one side, the inner 

 funnel in xiii, the ovipore in xiv. Close to the ovidm-t in xiv tliere is a very peculiar 

 sac (figs. '6oets('(j.),(>i the size of the oviduct or smallci-. It does not open directly in the 

 oviduct, and ithas the general shape of a septal gland with many rounded lobes arrangi-d 

 as the petals in a rose. The epidermal covering does not closely cover the inui'r cells 

 which are irregidar, apparently not closely packed, of uneven size and shape, round 

 or conical, each with a roniul nucli'us, and grainy cell contents. This gland does not 

 connect with the opening of the oviduct funnel, fnjm which it is separated l)y the 

 septum between .xiii and xiv. There is one pair of those glands, one Ixdiiml each 

 oviduct. The gland is allixed to the posterior part of the anterior se[)tum in xiv. A 

 similar gland does not exist in Dallanin elcf/niiK. As to the nature of this organ I can 

 sav nothing definite, and I hesitate to considei' it as an ovisac, until a more extensive 

 nuiteiial will allow other investigations. 



Speniidiii-f mid I'mxtitti' (fig. \V.\). As in the preceding ami following specie-, 

 the spermdnct and prostate open in the -ame pole in somite x\ii. The speiimlucl 

 opens slightly posterior to the [)rostate and also more outwardly, though I »olh organs 

 closely join at the pore. The s[>ermdiK'l is (juilc wavy throughout its lengtli to the 

 ciliated rosettes, which as usual are found in x and xi, 'i'he rosettes are less folded 

 and crenale than those in DeUarda deyniis. The prostate dilTers .sonicwhal from the 

 one in the latter sjiecies. The muscular duel is not helix-like at its upper end, either 

 straight or bent at right angle to itself, with the distal end pointing i)a(dcward, being 

 parallel to the longitudinal axis of the body. The relative size of the prostate is in 



