254 CALIFORNIA ACADEMY OF SCIENCES. 



species. O. Hendriei has the largest prostate of the 

 two, about as large again as the one in O . gnatemahv (hg. 

 65, 66 and 83). 



The vascular system resembles that of Ocnerodriliis 

 limicola, and there is a large connecting vessel, evidently 

 a pulsating one, in somite ix, just behind the diverticu- 

 lum of the oesophagus. But this vessel is larger than in 

 O. limico/a, and partakes in shape and size of the nature 

 of a heart, much resembling the one in the somite pos- 

 terior to it. 



Habitat. Santo Tomas, Guatemala, Central America, 

 between Salama and Coban, on the road after a rain. 



Ocnerodrilus limicola, ;/. sp. Fig. 31. 35, 47, 53. 78. 



The Clitclliini comprises at least tive somites, extend- 

 ing from xiv to xviii, and encroaching on somites xiii and 

 xix. 



Spennathecal fore in somite ix, as usual, in the groove 

 between that and somite viii. 



Ovipore in somite xiv. 



Male or spermi'ducal papilhe one pair in somite xvii, 

 and a pair of prostate papilla; in somite xviii. The zone 

 surrounding the papillce is small, and does not extend 

 across the ventral region, as in O . agricola. 



The septal glands are in somites v to viii, as usual. 

 The anterior three glands are the largest, of nearly equal 

 size, but the one in somite v is slightly longer. All the 

 glands are characterized by being much more deeply 

 lobed than in any other species, even more so than in O. 

 Beddardi and gnatemala. The posterior gland in somite 

 viii is, as generally, the smallest. 



Sper7nathecce (fig. 31-35, s. spth.) one pair in somite 

 ix. This organ is smaller in this species than in any of 

 the other which possess spermatheca;, except O. giiate- 



