J. [January, 



A NEW SPECIES OP OTIOEEHYNCHINE BEETLE OF THE 

 GENUS BHYNCOGONUS Sharp FROM LAYSAN ISLAND. 



BT E. C. L. PERKIXS, M.A., D.Sc, P.Z.S. 



Though widely spread hi the islands of the Pacific Ocean the species 

 of this genus, so far as our present information goes, are most numerously 

 represented in the Hawaiian group. The insect here described was cap- 

 tured some years ago by Mr. A. Bryan on Laysan Island, where he was 

 chiefly engaged in a study of the Avifauna. Laysan is very distant 

 from the main islands of the group, but its land fauna is essentially 

 Hawaiian. 



Ehyncogonus hrymii, sp. n. 



Piceo-niger, tibiis tarsorumque unguiculis magis rufescentibus, setis 

 squamosis pallide flavescentibus vsstitus. Oculi prominentes, fortiter con- 

 vexi. Caput punctato-strigosum, rostro antice impresso. Antenuarum 

 al-ticuhis secundus et tertius subaeqviilongi. Pronotum densissime, nee pro- 

 funde, rugoso-punctatum, linea brevi mediana laevi, setis squaiuifurmibus 

 appressis (latera versus densioribus) aliisque gracilioribus vestitum. Scutelli 

 vestitu deiitiissimo, punctum pallidum conspicuum formante. Elytra seriatim, 

 baud profunde, punctata, setis appressis squamiformibus, aliisque gracilibus 

 (brevibus tamen) et suberectis, plus minus lineatim dispositis, vestita, iuter- 

 stitiis tribus utrinque subcarinatim elevatis, pseudepipleuria fere aequaliter 

 (baud maculatim) vestitis. Abdominis segmenta ba&alia distincte largeque 

 punctata, punctis magnis, segmenta duo parva intermedia puncturatione 

 obscura sculpta. Long. $ rostro incluso fere 9 mm. 



I have seen only a single female of this species and had hoped to 

 include with it one or two others from the main islands, but in the case 

 of the latter, owing to the variability of many of the described forms, 

 the material was too small for any decision as to their specific value. 

 The Laysan insect appears to me more distinct than are most of the 

 Hawaiian representatives one from another. In the characters of 

 the head and antennae it most resembles the littoral B. vestitus Sh. or 

 B. extraneus Perk., which is attached to low plants of the open country. 

 In form and in the sculpture of the pronotum B. hryani more nearly 

 approaches some of the species found in mountain forests. The three 

 carinae of the elytra, at least towards the base, are very conspicuous in 

 lateral aspect, the outer one forming the division between the pseudepi- 

 pleura and the rest of the dorsal surface. 



The type, I believe, belongs to the Bishop Museum in Honolulu, 

 and will be returned to that institution. 



Paignton. 



Decembe)- 1918. 



