20 PROCEEDINGS OF THE NATIONAL MUSEUM vol. m 



specimens were examined from Gold Beach, Curry County, Oreg., 

 south to Patrick's Point, Humboldt County, Calif, and to the eleva- 

 tion of 2000 ft. 



Remarks. — This species has been separated from fenyesi primarily 

 on the basis of the aedeagal characteristics. The differences between 

 cochlearis and fenyesi fenyesi appear to be greater than the differences 

 between fenyesi fenyesi and fenyesi fenderi. The median lobe, including 

 the internal sac, is clearly different. More than half the specimens of 

 cochlearis can be separated from all known specimens of fenyesi fenyesi 

 on the basis of the pronotal ratio. Four specimens of fenyesi fenyesi 

 were collected seven miles from the nearest specimens of cochlearis. 

 I do not know if actual overlapping of their ranges occurs. No inter- 

 mediate males are known. The name cochlearis refers to the spoonlike 

 shape of the median lobe of the aedeagus. 



The fuchsi Group 

 Figure 41 



This group includes fuchsi Schaeffer; marinensis, new species; 

 lobatus, new species; mattolensis, new species; trinitensis, new species; 

 and humilis Casey. These species are very similar and probably are 

 closely related. The most distinctive differences among the six are 

 found in the male aedeagus and sixth abdominal sternum. The shape 

 of the pronotum also differs among the six, but it is difficult to 

 distinguish the taxa on this basis alone unless one has a series for 

 comparison. The characteristics below are common to all six species. 



Color of body. — Rufous or piceous. 



Head. — Eyes normally large and prominent; trace of triangular 

 impression on front; microreticulate. 



Pronotum. — Posterior pair of setiferous punctures at subrectangu- 

 lar hind angles; outer pair of longitudinal impressions absent; basal 

 transverse impression complete; base bisinuate; disc partly micro- 

 reticulate. 



Elytron. — Scutellar stria and puncture present; setiferous punc- 

 tures on eighth stria consisting of six anterior, one intermediate, eight 

 or occasionally seven, in posterior series; two setae at posterior end 

 of seventh stria; intervals usually somewhat convex; striae inpunctate; 

 microreticulate. 



Ventral surface. — Coarse punctures on mesepisternum; scattered 

 punctures on metepisternum and sides of metasternum. 



Legs. — Hind trochanter blunt, about half the length of hind 

 femur. 



Sixth abdominal sternum of male. — Apical edge thickened; 

 tubercules and/or carina or lobe before apical margin. 



