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53. 
CALIFORNIA ACADEMY OF SCIENCES. 
PLATE L. 
BENHAMIA PALMICOLA. 
Part of the intestine and hearts dissected out. 
Prostate and sac with penial seta. 
BENHAMIA RUGOSA. 
The ventral side of clitellum, showing the copulatory papill# on which are situated the anterior prostate pores 
in xyil. The clitellum is much crenulated. 
Anterior somites seen from aboye, showing prostomium, somite i, ii and ili, the first of which is much swollen. 
The same seen from the side. In these two figures somite i is retracted in the buccal cavity. 
Another specimen; the anterior somites, but i, is fully extended. 
Larger penial set, free end. 
Smaller penial setz. 
A partly diagrammatic representation of the interior surface of a posterior somite, showing the nephridia. 
1, 2, 3, 4, small, refer to sete; 1, 2, 3, 4, large, refer to nephridia. 
ALEODRILUS KEYESI. 
A specimen, natural size. 
The anterior somites seen from the ventral side, showing the generative pores and the position of set. 
Prostomium and somite i. 
The sexual foss# and papille. 
A somewhat diagrammatic view of the anterior somites, composed from several longitudinal sections. 
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