CLAVICORNIA AND LAMELLICORNIA. 



49 



iongitudinem ad latitudinem aequali, lateribus fere parallelis, minute denticu- 

 latis, angulis anticis prominentibus, posticis obtusis, pone marginem anticum 

 profunde transversim impresso et late triangulariter 

 excavato, cavitatis apice post medium attingenti, 

 margine antico medio leviter concavo, utrinque paulo 

 producto, postice quadrilobato ; elytris fortiter baud 

 crebre seriato-punctatis, basi leviter concavo, bumeris 

 fere rectis, lateribus parallelis, apice paulo attenuato. 



Long. 5"5 mm. ; lat. max. 1"5 mm. 



Upolu I. : Malololelei, 2000 ft., June. 



Only a single specimen was found. Two non- 

 American species, C. wallacei Pasc, (Mysol) and 

 C. setosus, Reitt. (Sumatra), bave previously been 

 assigned to tbis genus. Tbe new one differs considerably 

 from botb, but most resembles C. wallacei, tbe otber 

 having a median undivided lobe to tbe front margin 

 of tbe pronotum. C. samoensis is rather smaller and 

 more elongate than C. wallacei, the two anterior lobes 

 of the pronotum are small and widely separated, the discal impression is much 

 larger and wider, its apex reaching past the middle of the pronotum, the front 

 angles are not divergent, the hind angles are blunter, the elytra are a little 

 more than twice as long as the prothorax, more distinctly punctured than in 

 C. wallacei and with finer setae. The antennae are short, but a little less 

 thick and compact than those of C. tvallacei. 



The name Colydodes, pubbshed by Motschulsky in 1855, was rejected by 

 Sharp {Biol. Centr.-Amer., Col., Vol. ii, pt. 1, p. 447) in favour of Distaphyla, 

 five years later in date, on the ground that it was undescribed by Motschulsky. 

 The description is certainly entirely inadequate, and the only definite feature 

 mentioned (and referred to in the misleading specific name gibbiceps, which 

 Sharp has adopted) is attributed to the wrong part of the body ; but, as no 

 standard of adequacy, by which the validity or otherwise of a description can 

 be judged, has ever been proposed, it does not seem to me to be possible to 

 ignore even this, since it is possible to recognise the insect. 



Text-fig. 4. — Colydodes 

 samoensis, sp. nov. 



IV. 1 



4 



