46 CALIFORNIA ACADEMY OF SCIENCES. 



margiiiings and conspicuous spiny hairs. Sternal 

 markings consisting of pale brown linear transversal 

 blotch on prosternum, distinct, narrow blackish diago- 

 nal intercoxal lines between pro- and mesolegs, with 

 pale brown median triangular blotch emarginated on 

 anterior margin, very pale, indistinct intercoxal lines 

 between meso- and metalegs, with a pale brown trian- 

 gular median blotch between them, and another 

 smaller pale brown median blotch apparently between 

 the metacoxse, really on first abdominal segment. 



Abdomen elongate-elliptical; two to three or four 

 longish hairs in lateral angles of segments; on seg- 

 ments 1-8 a regular series of alternating whitish 

 (sutural) and chestnut-brown transversal (segmental) 

 bands, each colored band bearing a single series of 

 longish hairs on small pustules along its posterior mar- 

 gin; a longer hair on larger pustule at each end of each 

 of these series; narrow, segmentally interrupted black- 

 ish lateral bands, separated from the brown transverse 

 bands by a narrow whitish space; segment 9 wholly 

 chestnut-brown except pale to uncolored posterior bor- 

 der; posterior margin with thick-set fringe of uncol- 

 ored longer and shorter hairs. Ventral surface of 

 abdomen of segments 2-8 with a median pale brown 

 transversal band, bearing numerous fine hairs rising 

 from small pustules; segment 9 mostly colored. 



Menopon praecursor n. sp. (Plate IV, fig. 8), 



Many specimens from a Gila Woodpecker, Melanerpes 

 uropygialiH (Baja California). Denny is the only author 

 who has hitherto described a Menopon from the wood- 

 peckers {M. pici, from Picus viridis, Monograph. Ano- 

 plur. Brit. p. 219, pi. xx, fig. 5). From his brief de- 



