The Graspedosomatidse of North America. 23 



ful searches, that the family is not represented in Liberia and the 

 neighboring European colonies of the west coast of Africa.* 



The above is substantiality the same characterization of this fam- 

 ily as that given by Latzel, with a few deviations, two of which are 

 noteworthy. The first is that we credit all Craspedosomatidae with 

 six bristles to a segment, and the other that we give the number 

 of segments as sometimes 26 and 28, changes which we will later 

 on attempt to justify. The following additional description will 

 apply to all the American species known to us and included in 

 this paper. It has been our intention to omit from it no char- 

 acter common to all the species, no matter how unimportant any 

 might seem to be, and for the sake of brevity, chai-acters given 

 here will not be repeated in generic and specific descriptions. 



We consider it probable that most of the statements will be 

 found true, except where noted, for all Craspedosomatidse, but as 

 many of them have to former writers seemed too unimportant to 

 be included in familj- descriptions, and others have not been previ- 

 ously recorded at all, it seemed the pai't of caution not to com- 

 bine them with the preceding description made to accommodate 

 the European forms, and modified only enough to admit the 

 American. 



Body moderately elongate, about ten times as long as its greatest transverse 

 diameter; posteriorly laterally compressed (except Branneria), giving an oval 

 cross-section with dorso-ventral diameter greatest. 



Vertex smooth, prominent, broadly and sub-angulately emarginate poster- 

 iorly, sparsely hirsute with hairs of moderate length; a short, fine, median 

 sulcus and suture on the posterior portion ending at the point of greatest 

 elevation. 



Clypeus not distinct from the vertex by an apparent suture,! rather flat; 

 lower part more hirsute, and with an elevated transverse ridge just above the 

 labrum. 



Labrum rather long, somewhat decurved, as least as broad as the lower j)art 

 of the clypeus; corners broadly rounded, the emargination rather shallow. 

 There are two transverse rows of setigerous punctations as is usual in lulidse, 

 the upper row containing four and the lower ten punctations. -The lateral 

 bristles of the upper row are farther from the median than the latter are from 

 each other; lower row interrupted behind the emargination. 



* After the above was written Mr. Pocock published his new genus Heter- 

 ochordeuma from the mountains of Burmah, and we became acquainted with 

 the description of a New Zealand species of the family, Craspedosoma trisetosum 

 Hutton (Ann. & Mag. Nat. Hist. Ser. 4, Vol. xx., p. 116, Aug. 1887. 



t Differing in this from most lulidte and Polydesmidse. 



