NO. 1143. COLEOPTERA OF THE GALAPAGOS ISLANDS— LINELL. 251 



Length, 12,5 unn.; width, 5 mm. 



One male, collected on Chatham island by Dr. G. I>aur. 



This is tbe smallest known species of Galosoma and has more the 

 appearaiKiC of a Cychrus. Hope's descrii)tion does not mention tlic 

 sexual characters, and he gives the color as black above and beneath, 

 with the elytral margin \iolaceous. It is not recorded on what partic- 

 ular island Darwin collected it. 



'CALOSOMA HO\A^ARDI, new species. 



Calosoma ? galapagoiim Lineli, (nee. IIoi'E), Aimot. Cut. by L. O. Howard, I'roc. 

 U. 8. Niit. Mus., 18S9, XII, p. lill. 



Ovate, bluish green above, slightly shining, winged. Flead obso- 

 letely sparsely punctate, slightly strigose at the eyes; labrum and man- 

 dibles black ; palpi piceous. Antennae reaching to about one third the 

 length of the elytra, piceous at base, the hairy joints brown. Thora.v 

 one-half broader than the head, one-half broader than long, snbcordate, 

 widest before the middle, imperceptibly sinuate behind ; posterior angles 

 not prolonged, subacute, forming an acute angle with the humeral 

 margin of elytra; lateral margin narrowly rellexed; base broadly sinu- 

 ate each side near the angles; disk feebly convex, not depressed at the 

 sides, smooth or obsoletely finely strigose; median line distinctly 

 impressed; the transverse basal impression obsolete, more or less 

 punctate; basal foveae near the hind angles large, rounded, sparsely 

 punctate. Elytra one-half longer tlian broad, subparallel or slightly 

 wider behind (in the leniale); striae regular, feebly imi)resscd at base, 

 deei)er behind, with small but deep punctures, submarginal striae more 

 obsolete, margiiuil stria with muricate punctures; intervals of the disk 

 slightly convex, obsoletely transversely rugose toward the sides; the 

 third, seventh, and eleventh intervals interrupted by numerous small 

 shallow foveae for their whole length. Ventral surface black, smooth; 

 episterna of prothorax violaceous; sides of metasternuin and first ven- 

 tral with more or less numerous coarse punctures. Posterior trochan- 

 ters oviil, alike in the sexes. Legs black; tibiae finely spinose, the 

 intermediate ones arcuate (slightly in the female), with coarse and 

 dense yellow pubescence along the exterior groove below the middle. 



Length, 10 to 21 mm.; width, 7.5 to 10.5 mm. 



Male. — Anterior tarsi with three joints strongly dilated and spongy 

 beneath. Intermediate tibiae strongly arcuate, the apex expanded, 

 with a dense yellow pubescence beneath, and prolonged into a short 

 obtuse spine. 



Type.—^o. 1311, U.S.N.M. 



Two examples from Duncan island and 12 from Chatham island, 

 collected by the Albatross expedition in 1888, and 78 from Charles 

 island, collected by the Albatross expeditions in 1888 and 1891; also by 

 Dr. G. Baur. 



