The Graspedosomatidse of North America. 



33 



BRAWIVERIA Bollman, 1893. 

 Bulletin No. 46, U. S. Nat. Museum, p. 158. 

 Eyes of numerous (16) ocelli arranged in triangular patches. 

 Antennse of moderate length, subclavate. 



Segments depressed, with prominent lateral carina ; dorsally with numer- 

 ous longitudinal carinse. 

 Male genitalia complex. 

 Segments of adult 26. 



We have seen four specimens of this genus, one being a mature 

 male, but dissection was not attempted, owing to scarcity of ma- 

 terial and small size. 



This genus does not appear to be closely related to any other, 

 the sculpture of the dorsal surface being unique in the present 

 family, as is also the small number of segments. This last pecu- 

 liarity is the more interesting from the fact that European writers 

 have insisted that the number of segments in this family is alwaj^s 

 30, refusing to believe the statements of American writers to the 

 effect that a less number occurs. 



The mature male is in the collection of the University of Indi- 

 ana, and we did not have opportunil}^ of making drawings or a 

 description of the genitalia. We were, however, able to assure 

 ourselves that their complexity equals or exceeds that of any 

 other species known to us. 



Branneria carinata (Bollm. ). 



Craspedosoma carinatitm Bollman : Ann. N. Y. Acad. IV., 109 (1888) ; 

 Bulletin 46, U. S. Nat. Museum, p. 83; 158. 



Eyes triangular, ocelli 16, without regular arrangement. 



Antennae large in proportion to the size of the animal, subclavate, the two 

 distal joints being equal in length, while the fifth and fourth are subequal, 

 each about twice the length of the seventh. Sixth joint thickest, .14 mm. in 

 diameter. 



First segment semicircular, anteriorly rugulose and with irregular depres- 

 sions; along the posterior edge a row of longitudinal ridges; in front of these 

 are several similar ridges not arranged in a regular transverse series, and 

 not placed with regularity in front of those of the posterior row. A setigerous 

 tubercle situated at the posterior angle; another about midway between the 

 anterior and posterior margins, a little closer to the median line than to the 

 lateral corner; a third tubercle midway between the other two. Setse .1 mm. 

 long, slender, tapering. 



Subsequent segments with the anterior subsegment covered with short, 



Annals N. Y. Acad. Sci., IX, Oct., 1895.— 3 



