Ayleborus. | RHYNCHOPHORA. 447 
furnished with a very short process; thorax rough in front and not 
margined behind ; elytra without an impressed line along suture, with tie 
apex not excavated but slightly reflexed, furnished with more or less 
distinct tubercles, which are sometimes almost obsolete 3 punctured 
strie distinct, interstices closely and rather finely punctured in rows; 
eyes emarginate ; the club of the antenne has the sutures very slightly 
curved and the funiculus is five-jointed. 
The males are so different from the females that I have followed 
Bedel’s arrangement and given a table for each sex; in the former the 
elytra are much shorter in proportion to the thorax, and in each case the 
wings are developed in the females, whereas in the males they are 
atrophied and obsolete; this fact probably has a great deal to do with 
their scarcity in proportion to the females ; it appears to be a somewhat 
strange reversal of the ordinary rule, (of which we have many examples 
both among the Lepidoptera and Coleoptera, and, to a certain extent, 
among the Hymenoptera also), that the female is the sex in which the 
wings are rudimentary or wanting, 
Mates. 
I. Thorax rounded, rather flat, elytra globular or sub- 
globular, convex. . . oe etal Nee ‘spt a ee AU Nad DISPIAR PAE 
II. Thorax and elytra oblong, 
i. Upper surface of thorax broadly concave in 
front and terminated on its anterior border by a 
short horn-like projection. . . . . . . . . X.DRYOGRAPHUS, Ratz. 
ii, Upper surface of thorax without excavation or pro- 
jectionvunfrontaGnigs 4114) 29s es ui: ol) 6 oO SAXESENI, Ratz, 
FEMALES. 
I. Form broader, oblong; elytra about one and a 
half times as long as broad; thorax with the sides 
more or less rounded (Anisandrus, Ferr.).. . . . X.DISPAR, F, 
II. Form narrower, subcylindrical ; elytra at least 
twice as long as broad; thorax with the sides sub- 
parallel, 
i. Hinder part of thorax distinctly and somewhat 
strongly punctured, rather shining; apical 
declivity of elytra without, or almost without, 
tubercles . , Ss 5 « te tw UO 6k DEVOGRABHUS, Baiz: 
ii. Hinder part of thorax impunctate or almost 
impunctate, rather dull; apical declivity of 
elytra with distinct tubercles arranged in longitu- 
aOW SEL cee ar yy oh.ch ss 6 ef, ee eX SAXESENT, Ratz. 
%. dispar, F. (thoracicus, Panz.; 9 Ratzeburgi, Kol.). Short and 
broad, clothed with rather long yellowish or greyish-yellow pubescence, 
shining, black or pitchy-black, with the elytra castaneous or pitchy-red, 
antennes and legs testaceous, femora and tibie often darker; thorax 
scabrous and tuberculate in front, finely punctured and almost smooth 
behind ; elytra with regular punctured strie, interstices closely and 
