8o University of Michigan 



Cliodesmus cryptopygus, sp. nov. 



PI. 30, Figs. 213-217 



Vertex of head and metazonites, together with the normally 

 exposed portion of prozonites, black above, the covered por- 

 tion of prozonites and the anterior portion of each keel normally 

 overlapped b}- the preceding keel, pale, whitish. Lower part 

 of head, antennae, and venter in general with legs pale, fulvous 

 or whitish fulvous. 



Head granular in a cross band between and just above 

 antennae, elsewhere nearly smooth. A transverse depression 

 across clypeus. Antennae with joints short, as a whole first 

 clavately widening and then again narrowing at distal end. 

 (PL 30, Fig. 213.) 



CoUum with ends or keels rounded, each above with a large,, 

 transversely elongate or somewhat double tubercle. ^Median 

 region of plate with three transverse rows of large tubercles, 

 six in each row, the ectal tubercle of the two anterior rows on 

 each side in some degree fused with each other at base of keel. 

 (PI. 30, Fig. 213.) 



Second tergite evenly and moderately bending forward on 

 each side ; anterior margin entire ; lateral margin with live cre- 

 nations, of which that at anterior corner is largest; caudal 

 margin of keel deeply excavated at base of distal depressed 

 portion, leaving an angle mesad of it which projects over a 

 transverse furrow in caudal edge of plate into which the ante- 

 rior ])order of the succeeding tergite fits. (PI. 30, Fig. 213.) 

 Dorsum of tergite with two transverse rows of tul^ercles. six 

 in each series, and in addition two partially confluent tubercles 

 on keel in a line just mesad of the caudal excavation, the keel 

 elsewhere smooth. Third tergite with keels not expanded as 

 those of the second are. there ])eing but three lateral crena- 



