378 Mr. T. Vernon Wollaston on 



20. Caulotrup'is conicoUis, Woll. 

 Cmilotnipis conicoUis, Woll., Ins. Mad. 314 (1854). 



Id, Cat. Mad. Col. 103 (1857). 

 Habitat insulas Maderenses (sc. Maderam et Desertam Gran- 

 dem), sub lapidibus vel ad caules plantarum, passim. 



Found sparingly in Madeira and on the Deserta Grande, oc- 

 curring under stones and at the stems of plants, at rather low and 

 intermediate elevations. 



Genus MicRoxYLOBius. (PI. 18, figs. 5, 6, 7, 8, 9.) 

 Chevrolat, Trans. Ent- Soc. Lond. (1st Series), i. 98 (1836). 

 Corpus parvum, glabrum, in speciebus nonnullis fusiformi- 

 elongatum, in aliis etiam breviter ovatum : roslro longiusculo, 

 subarcuato, deflexo ; scrobe obliqua, profunda, subrecta, infra 

 oculos (laterales, sat magnos, rotundatos, deuiissos) desi- 

 nex\ie: 2^^'othorace ad latera plus minus rotundato, rare co- 

 nico : scuteUo baud observando : elytris connatis : alis obso- 

 letis : abdomine e segmentis 5 composito, articulis Imo et 

 2do magnis (illo paulo majore), inter se arctissime connatis 

 (sutura segre observanda), Stio, 4toque brevissimis sequa- 

 libus, ultimo majore subtriangulari. Antennce (18, 5a, Ca, 7a, 

 8a, 9a), crassiusculse, ultra medium rostri insertae ; scapo 

 subarcuato, apice clavato ; funiculo 5-articulato, articulo 

 Imo secundo aut vix aut (ut in typicis) distincte latiore, 

 2do Stioque vel (ut in typicis) inter se subtequalibus vel illo 

 longiore, 4to 5toque plus minus brevibus suba3qualibus (lioc 

 clav£e baud arete adpresso) ; capiiulo solido, plus minus 

 elongato-ovato, obscurissime 4-annulato. Pedes (18, 6b, 7b, 

 8b, 9b), elongati, robustissimi, subcequales, antici ad basin 

 fere approximati, intermedii paulo distantiores, poslici valde 

 distantes : fenwribiis vel (ut in typicis) muticis, vel j)oslicis 

 (in utroque sexu ?) spina magna acutissima sub-basali supra 

 armatis ; posticis (prsesertim in sexu musculo?) versus apicem 

 interne transversim strigulosis et per marginem inferiorem 

 plus minus obscure irrcgulariter tuberculatis : tibiis subrectis, 

 validis, ad apicem externum in uncum magnum elongatum 

 inflexum acutum productis, ad internum angulo parvo spini- 

 formi terminatis : tarsis pseudotetrameris, articulo Stio 

 plus minus late bilobo. 

 After a careful consideration of the five insects described below, 

 all of which were taken at St. Helena, by my friend Mr. Bewickc, 

 of Madeira, amongst native vegetation, on the extreme summit of 

 the island, I have come to the conclusion, in spite of their great 



