8<» MntuiirM of the Ituttun Miueuni. [Vol.. Nil. 



(Jenu-' PSEUD ACANTHUS. Kaiip. i860, p. 9. 



Incl. Stiso/trorulus, Znng. 1905c.;? Ogyijfs, Kniip. 1871;? Prlrrjnidfii, Kuwcrt, i8q6: 

 TrineHurgtis, Bates. 1886 ; '. Trtiqniiis, RatcH, 1S86. 

 T\"]>r, I'asaalHs mt-j-iraiui'i Tnii|ui, i^^'. pp. ."'S."?'^'- 



Pseudacauthus biiidus (/..m;:). 

 hV IV. 13 p, -.M. 

 .Yri«o/<rorii/iM btfiilim, Z^iiiy, l'.M>,V, p. ".M'J 



Six .s|>ccinxcn.s from .Moxic**. Length ,•',7-4 1 iniii. 



Tho untcnnni laim-llafan' long, Iwing ivpial to throe or four of the immptliatoly precwl- 

 ing joint.s. Tin* anffrior margin of thf lalmim i.s deeply cleft ; the side.s of the labrum are 

 •straight ami parallel. Th«' (•ly]MMi.s i.s .stnmgly arched on either side of n still stronger 

 median ronravitv. The c-entral tubercle rcsemliles that of the genus (tilrus in general form. 

 There are no fpmtal (ubenles or ridge.s. Tho parietal ridges are tibsolete. The pronotum 

 is unpunctured ; its median groove in very .strong, but does not <juite reach the anterior 

 margin. The .scutellum is .strongly puncture*! on either side of the midille line. The 

 mesiithoracic episterna are punctured above and near the anterior margin only ; they are 

 glossy, except for a matt oval patch behind the lower margin and a matt streak in the 

 posterior angle. The meso.sternum is glo.s.sy except in the scjirs. which arc matt ; it 

 is unpuncturetl. The meta.st-ernum is hairle.ss, and is unpunctured except in the 

 |>osterior intermediate areas ; the lateral areas are linear and smooth. The abdominal 

 sterna are smooth. The groovi*-^ on the elytra are finely j)unctured laterally. 



Pseudacanthus solidus (.Vrrow). 



l-i.' IV I -J I . .'I 

 Tnnrnurqu* golidux. .Arriiw. 11M(7. pp. ■|.'>2"ir>;). 



Described from a (damaged) cotype, 39 iinn \<<w_'. fruin f'huipachc. (tiitz.ilti'nainj,.. 

 Guatemala, lent by the British Mu.seum. 



The anterior margin of the labrum is lightly conr.ive. i'lic riypeus is .strai^lit. and luarji 

 a pair of .small tubercles, each situated about half way from the middle line to the tubercle 

 in which it terminates laterally. The parietal ridges, though .somewhat small, are quite 

 distinct. There are two or three punctures in <ir near the scars on each side of the 

 pronotum. The matt areas of the mesothoracic episterna are even more restricteil than in 

 /'. bifidus. The mejUisternum is puncture<l and hairv laterally behind. The lateral area.s of 

 the metasternuiM are broad ; both these arca.s, and the intermetliate areas in front of and 

 behind the u.sual group of coarse hairle.ss punctures on the posterior intermediate arca.s, 

 ai' : with hair-lK'aring punctures. The alxlominal stenia are snuioth. In other 



r' - spocies resemble^ /'. f>ifi,l>is. 



Pseudacanthus jalapensis. I'., it.-. 



l'$r>ni'ir„„'l,,< j-iioj-tiXMf JUt««. IH>«ri. p. 'J. [,| 1. Iijis lO-IOtl. 



One si>c<imen from Oajaca. S. .Mexico. Also a coty])e from Jalapa lent by the British 

 Mu.seum. Length 32'0-33 5 nuu. 



