900 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [22] 



Habitat.— California, Sierra Nevada, Fresno County, at an altitude 

 of 7,000 feet, in stagnant water in the meadows; never in the very 

 stream. 



Camptodrilits igtNeus n. sp. 



(PL XIV, Fig. 13.) 



Nervous system.— ThQ cephalic ganglion is broadest in front; its pos 

 terior margin is deeply emarginated, on both sides surrounded by very 

 pointed lobes. The frontal lobes are each covered with several globu- 

 lar swellings (Fig. 13, h). - 



Generative system.— The penis sheath is long and extremely narro\v| 

 its lower or exterior end is suddenly expanded, deflected, and rather 

 plate-like. From behind this deflection the penis sheath gradually in- 

 creases in thickness towards the upper or inner end of the sheath (Fig. 

 13 e and 13 g, PI. XVIII). The oviduct is single sack-like, of a very 

 elongated form. The lower end of the oviduct is very much the widest, 

 and in the same the cell nuclei are plainly visible. The spiral mus- 

 cles surrounding the copulative organs are very strong and distinct, 

 unlike those of the preceding species, G. spiralis. The receptacle is 

 bent and sack-like, not found containing any spermatophores (Fig. 13, d). 



The segmental organs are in all the segments furnished with a coat- 

 ing of perfectly globular cells, with plain cellnuclei situated close to 

 the tube of the organ (Fig. 13, e). 



The perigastric cavity contains free and floating perigastric cells of 

 somewhat variable form (Fig. 13, /). 



The integument of the body is extremely tender. Color fiery red, 

 under the microscope yellowish. Size of the body about 30°i°» by 0.75°i'° 

 wide. 



Jffa&itot— California, San Francisco, Oakland, Santa Clara Valley and 

 neighborhood. Adult in March. 



This species is especially remarkable for its fiery color, which gives 

 to the borders of fhe ponds wherever it is found a very vivid, appear- 

 ance. The shape of the cephalic ganglion and the plate-like extremity 

 of the penis sheath are distinct characteristics of the species. 



camptodriltjs corallinus, n. sp. 



(PI. XVI, Fig. 14; PI. XVII, Fig. 14; PI. XVIII, Fig. 14. ) 



Nervous system.— The cephalic ganglion is nearly square, and its pos- 

 terior emargination rectangular, or nearly so (Fig. 14 d). 



Generative system.— The penis sheath is gradually increasing in width 

 towards its exterior extremity, which is considerably bent, not much 

 deflected nor plate-like. Figs. 14 e and 14 I represent the reproductive 

 organs as generally found. Figs. 14 * and 14 A; represent the lower end 

 of the penis sheath, with a small deflection of its margin, as it some- 

 times is found. The oviduct incloses the penis sheath tightly, except 



