66 The Craspedosomaiidfs of North America. 



move than a circular ring-like base for the setse, while towai'd the 

 posterior end of the body they become distinct prominences. 



We describe this species with the expectation that it will prove 

 to be Harger's lunatum^ and consequently the type of the genus 

 Trichopetalura, if the original specimens can be re-examined. 

 For the present, however, it does not appear warrantable to make 

 a determination, for the reasons stated under T. lunatum. 



Tricliopetaliim corn it turn sp. n. 



Plate III, figures 46-49. 



Very similar to T. alburn^ but somewhat larger, the lateral 

 striations more regular and more pronounced, the elevations lat- 

 erad from the median seta more prominent, the arrangement of the 

 ocelli somewhat different, but differing more especially in the male 

 genitalia. These differ from album in having the apex deeply bi- 

 lobed, the lobes more or less connivent, figure 49 being a lateral 

 view. Figures 46 and 48 we were able to understand as being the 

 same in form as 49, the apparent differences being caused as in 

 album by the fact that the apical portion is so thin as to be bent 

 in different ways, and is viewed at different angles. Figure 4*7 

 did not so easily homologize, but it is not impossible that it maj'- 

 do so, and as we had but one specimen it seemed best to include 

 it here for the present. 



The specimens of this species are in rather poor condition, 

 with the setse nearly all rubbed off. The remaining setae are con- 

 siderably shorter than in album, but may not be entire. The color 

 is uniform dirty yellowish, without a trace of the brownish mot- 

 tlings of T. album. This may result from their being cave 

 animals. 



Habitat : Indiana, Bloomington and Coon's Cave (Bollman). 

 TJ. S. National Museum. Numbers 24, 42 and 441. 



The Bloomington specimens are mixed with those of the fol- 

 lowing species. Eight specimens referred to the present species 

 have been examined, but in their present condition the determina- 

 tion cannot be made with confidence without dissection sufficient 

 to show the male genitalia. 



Trichopetaluiu uncum sp. n. 



Plate III, figure 51. 

 Yery similar externally to the two preceding species, but evi- 

 dently distinct in that the male genitalia are bi-hamate with the 



