from the Galapagos Islands. 25 



ever entirely black, a character in which it approaches nearer to 

 the European species, for the same part is white at the sides in 

 C. villosus, and grayish black in the C, maxillosus. The few hairs 

 which I can perceive of the elytra are perfectly black ; they occur 

 however almost entirely on the hinder margin of the elytron. It 

 is possible that the insect may have had pale markings (which 

 have been rubbed off) on these parts, but I cannot trace any pale 

 hairs in either of the three specimens. 



The abdomen is clothed throughout with hairs, but they are 

 rather less dense than in C. villosus and C. maxillosus ; on the 

 upper surface of the abdomen the hairs are black, excepting on 

 the second and third visible segments, where they are yellowish 

 white, but interrupted with black on the middle of each segment :' 

 on the under surface the hairs are black on the first segment, 

 and yellow- white on the second and third segments throughout ; 

 the remaining segments are rusty white in the middle only, and 

 the pale hairs are almost confined to the posterior margin, the 

 sides being black in all the specimens. In C. maxillosus I find the 

 fourth segment white throughout beneath, with the exception of 

 a small black dot on each side. C. villosus agrees with the Gala- 

 pagos insect in having the side of the fourth segment black. 



Section STERNOXJ. 



Family Elaterid^e. 



Physorhinus (?) galapagoensis. Phys. oblongus sublinearis ; piceo- 

 fuscus, pube pallida tectus ; capita rugoso-punctato, antice flavo ; 

 thorace rugoso-punctato, linea longitudinali leviter impresso ; ely- 

 tris punctato-striatis, interstitiis punctatis ; antennis pedibusque 

 flavescentibus ; abdomine fusco. — Long. corp. 4^ lin. ; lat. \\ lin. 



I have placed this Galapagos Elater in a genus founded by 

 Eschscholtz, with which it agrees very closely in many of its cha- 

 racters ; as Germar's definition of the genus* in question does not, 

 however, in all respects apply to the insect before me, it will be 

 necessary to notice the points of disagreement ; but I will first 

 observe, that the Galapagos insect agrees with Physorhinus in ha- 

 ving the tarsi apparently but four-jointed, the fourth joint being 

 very small ; in having the third joint short, and produced on the 

 under surface into a long, undivided, membranous lobe : the lobe 

 in the insect before me is equal in leng-th to more than half that 

 of the terminal joint. The fourth joint is exceedingly small j 

 forming a mere node, as it were, at the base of the claw-joint : 

 the basal joint is long. The antennse are rather less than half 

 the length of the body, and composed of longish, conical, and 



* The account I refer to will be found in Dr. Germar's ' Zeitschrift fiir die 

 Entomologie,' Part 2 for 1840, p. 244. 



