38 University of Michigan 



Last tergite with Cauda acute, straight, exteuding a short 

 distance heyond the valves, a transverse sulcus at base of 

 Cauda. A'alves with mesal borders strongly compressed and 

 elevated. Anal scale smooth. 



Number of segments, 44 to 46. 



Length, near 155 mm.; width, 18 mm. 



Colombia : San Lorenzo. On trail in heavy forest. l)ctween 

 2,000 and 4,500 feet elevation. July i. 1913. Three females. 

 Holotype, M. C. Z., 5,110. 



Rhinocricus pycnus, sp. nov. 



Female. — Dark olive, the segments bordered with ferru- 

 ginous behind, the ferruginous band extending nearly to the 

 suture. Last tergite narrowly bordered behind with ferrugi-' 

 nous and the elevated mesal margin of valves the same color. 

 Collum bordered with ferruginous. Clypeus ferruginous, this 

 color also extending up in the middle between the antennae, 

 but here more obscure. Eyes also ferruginous. Legs and 

 antennae ferruginous. 



Sulcus of head interrupted at level of eyes. Clypeal fove- 

 olae 2-J-2. Antennae flattened, of uniform width over most 

 of length; sensory cones numerous. Eyes consisting of about 

 28 ocelli in five series; c. g., 7, 7, 6, 5, 5 ; facets distinctly con- 

 vex, decreasing in size mesad, as usual. 



Collum only slightly exceeded on each side by the second 

 tergite ; ends rounded ; surface without margining or other 

 sulci, under the lines showing a sculpturing^ of fine coriarious 

 markings. The suture on typical segments of body complete 

 and distinct, slightly angled at level of pore which it touches. 

 Longitudinal striae of metazonite few, those present present 

 only below^ Elsewhere metazonite and exposed portion of 

 prozonite seen under lens to be covered with numerous 



