NO. 114:!. rOLEOPTEUA OF THE GALAPAGOU ISLANDS— Ll^^ELL. 2bl 



specimens from the southwestern United States, Mexico, and Vene- 

 zuehi. Tt agrees with an example from Los Angeles, California, in hav- 

 ing granulate tubercles on the disk of thorax and in wanting the usual 

 elevations on the declivity of elytra. The only ditferenccj that might 

 be considered specific is that the a[)ical margin of the elytra is not 

 raised and not recurved to connect with the convex submarginal 

 interval, but this margin is variable in development in individuals 

 from the same locality. Darwin collected his specimens on a dead 

 mimosa tree on Chatham island.' 



Family CLEKIDAK. 



NECROBIA RUFIPES De Geer. 



Cori/nelvn rnjipoi I)c Geer, Mem., \ , ]>. 1()5. — \VATi;i;ii()rsi:, Ann. Nat. Hist., ISlf), 

 XVI, p.2«. 



Collected on James island l)y Darwin. It is cosmopolitan. 



Family TAHSALIDAK. 

 NELEUS TLASCALA Percheron. 

 Nehun tluxculii I'kiicmkuox, Moii. de.s J'a.ssale8, VKi'>, p. I."». 



One example was collected on Chatham island by the Albatross expe- 

 dition in 1891. The species is distributed from Lower California to 

 Paraguay. It has ample wings. 



' The following apparently undescribed epecit^.s of this geuiia has been collected hi 

 C'hapada, Brazil, by Mr. Herbert II. Smith : 



AMPHICERUS FRONTALIS, nev/ species. 



Cylindrical, robust, piceoiis black, shining, glalirous above. Antennae ferrngin- 

 oiis, 8ec(md joint globose, the following live together as long as the club, gradually 

 wider and more acute on tlie inner side; the club strongly compressed, eighth and 

 ninth joints transverse, tenth a little longer than wide. Mandibles black, polished, 

 with the scrobes Hat, punctate, short and broad. Palpi rufous, densely ciliate. 

 Head transversely rugosi^ beneath, densely longitudinally strigose on the vertex; 

 front shining and finely punctate on the sides, strigose near the c^yes; on the middle 

 a large, oval, oi»a(jue space, densely covered with small very acute tubercles. Lab- 

 rum densely covered with yellow hairs. Clypeus dark ferruginous, separated from 

 the front by a deep arcuate impression. Kpistoma not separated. Eyes very large. 

 Thorax quailrate v.ith conical hind angles; the anterior declivity without hooks, 

 rather finely granulate; and rugose on the summit, each side with i)rominent acute 

 tubercles; the iutiexcd sides densely rugosely punctate; disk with a large triangu- 

 lar smooth space at middle, and ])osteriorly reticulatcly j)unctate. Elytra rather 

 finely punctate ; humeri prominent, nearly smooth ; posterior declivity more coarsely, 

 rugosely punctate; suture scarcely elevated; apex distincly margined. Ventral sur- 

 face finely, densely punctulatc, with yellowish sericeous pubescence; metasternnm 

 sparsely punctiil.ite, nearly glabrous. Legs piceous, finely puuctulate and pubes- 

 cent. Length, 13 mm. ; width, 1.5 mm. 



Type.— 'So. VMi, U.S.N. M. 



Proc. N. M. vol. xxi 17 



