()1.'4 FAMILY IV. SCOLYTIM3. 



XVI. ANISANDRUS Ferrari, 1867. (Gr., "unequal" + "sex.") 



Joint 5 of funicle much broader than 2; club oblong-oval, 

 posterior half of anterior face cylindrical and chitinous, anterior 

 half obliquely truncate, posterior face chitinous throughout, with- 

 out sutures ; pronotum broader than long, anterior margin broadly 

 rounded and serrate; eyes oblong-elliptical, deeply emarginate. 

 The stouter form of body and longer and more slender scape also 

 help in separating from Xylcborus, the minute and humpbacked 

 males being very peculiar. 



SYNOPSIS OF SPECIES OF AXISAXDRUS. 



a. Pronotum with posterior area shining. 1000. ZIMMERMAXXI. 



aa. Pronotum with posterior area opaque, alutaceous. 



6. Pronotum with sides and basal angles not strongly rounded. 

 c. Declivity with lateral acute margins not armed. 



(I. Dorsal area of pronotum more distinctly punctured. 



1001. MIXOR. 

 dd. Lateral area of pronotum more distinctly punctured. 



1002. SAYI. 



cc. Declivity with lateral acute margin armed. 1003. OBESUS. 



lib. Pronotum with sides and basal angles strongly rounded. 



1004. PYRI. 



1000 (- -). AXISAXDRUS ZIMMERMANXI Hopkins, 1915-a, 68. 



Female, short, elliptical. Dark brown, shining. Pronotum with an- 

 terior rugosities extending to middle and lateral margin, posterior dorsal 

 and lateral areas smooth, shining, not punctured, posterior lateral mar- 

 gin acute, anterior margin serrate. Front convex, shining, with faint, 

 median carina, sparsely punctured. Elytra with striae not impressed, 

 faintly and closely punctured; interspaces smooth, shining, not punctured; 

 declivity convex, smooth, shining, stria? not impressed, punctures distinct, 

 posterior lateral margin acute, very faintly serrate. Male, light brown. 

 Pronotum much broader than elytra, quadrate, shining, faintly rugose on 

 the anterior lateral areas, anterior margin with apex faintly produced; 

 front narrow, flat, smooth, shining. Elytra narrower than pronotum, 

 with sides rounded and narrowed from base to apex, declivity oblique, 

 convex from near base to apex, subopaque and rugosely punctured, base 

 smooth and shining, pubescence to declivity short, sparse, erect. Length, 

 male, 0.82 mm.; female, 1.5 mm. 



Biscayne Bay, Florida. (Hnlrfiard Rc-Jnra r.~. } 



1001 (- -). AXISAXDRUS MIXOR Swaine, 1910-a, 164. 



Female, front convex, punctured, sparsely hairy, with epistomal fringe, 

 median carina very faint. Pronotum from above, slightly wider than 

 long, truncate behind, slightly rounded on sides, broadly rounded in 

 front; asperate in front, sparsely punctured behind, with faintest trace of 

 median carina, sparsely hairy. Elytra hairy, rows of punctures slightly 



