6i2 FAUNA HAWAIIENSIS 



One other very remarkable variety I was for some time inclined to consider of 

 specific rank, but I have since found it to be connected with the typical form. I here- 

 with diagnose it as follows : 



X. lineatiLS var. luimeralis nov. 



Niger, elytris nigris, nigro aut fusco-nigro tomento vestitis, utrinque macula magna 

 rufa humerali fere ad suturam extensa et plagam circumscutellarem nigram includente, 

 conspicue ornatis, his maculis rufis pulchre aureo-tomentosis, parte apicali elytrorum 

 nigra saepe paullo tomento pallido variegata. 



Hab. Kauai, Oahu, Maui, Molokai, Lanai, Hawaii. — From 1500 ft. to 6000 ft. 

 above sea-level. 



(49) Xyletobius serricornis Blackburn. 



Xyletobms serricornis Blackb., Tr. Dublin Soc. 1885, p. 159. 



This will probably prove to have been described by me under another name, unless, 

 as is quite likely, it is a variety of X. lineatus, perhaps the other sex. X. lasiodes is, 

 doubtless, common on Lanai, and it may be one of the forms of that very variable 

 species. Except that A^ serricornis is said to have the antennal joints more serrate, 

 I see nothing in Blackburn's description to separate this from A', lineatus, as described 

 by Sharp. 



Hab. Lanai (Blackburn). 



(50) Xyletobius lasiodes, sp. nov. 



Niger, aut rufescens, aut particolor, pedibus flavis aut rufis, antennarum articulis 

 basalibus 2 aut compluribus basalibus rufis aut fiavis, caeteris nigris aut nigrofuscis. 

 Antennae breves, ut in A', lineato formatae. Pronotum dense aureo aut argenteo 

 tomento vestitum, margine antico, desuper viso, simpliciter rotundato, haud angulos 

 versus laterales prominulo, a latere visum supra simpliciter sat distincte curvatum sive 

 convexum. Elytra dense conspicue aureo aut pallido tomento vestita, hoc parum 

 evidenter lineas pallidas formante, nee levissimo. Long. 275 mm. 



Differs from A', lineatus Sh. in the conspicuously rougher tomentum, showing little 

 tendency to form distinct pale lines on the elytra. Specimens from Lanai are sometimes 

 very large and with rather more developed antennae. There is a var. apicalis corre- 

 sponding not to the var. apicalis of A', lineatus, but to that of X. sulcatus, the apical red 

 colour being deeply excised in front. When the elytra are entirely red this apicalis 

 variety may still occur, the apical red colour being paler than the other. 



Hab. Oahu, Lanai and no doubt also on the other intermediate islands. — Common 

 and widely distributed, occurring close to Honolulu and in all other localities on Oahu. 



