NATURAL SCIENCES OF PHILADELPHIA. 225 



with the sides much less rounded, and the elytra are less densely punctulate ; 

 the disc of the thorax is obsoletely channelled behind the middle. The pro- 

 portion of the joints of the antennae seems scarcely different from E. mollis. 



3. E. alutacens. Philoxylonalut. Lee., Proc. Ac. 1861, 352. 

 California, one specimen. More elongate than the two preceding species, 



with the sides of the thorax considerably rounded, but the anterior angles 

 more distinct, and less rounded ; the disc is marked with a vague transversa 

 impression in front of the middle ; the elytra are scarcely distinctly punctu- 

 late. The joints, 5 8 are less unequal in length than in E. mollis 

 and punctulatus; the ninth is equal in length to the three preceding 

 united, and but very little wider. 



4. E. debilis, oblongus, testaceus, nitidus, dense pallide pubescens, ca- 

 pite thoraceque granulato-punctatis, hoc latitudine plus duplo breviore, late- 

 ribus explanatis late rotundatis, angulis omnibus rotundatis, basi utrinque 

 vage impresso, linea dorsali pone medium lasvi, scutello tomentoso, elytris 

 punctulatis, thorace haud latioribus : antennis articulo 5to sequi longiore, 

 6 8vo aequalibus, 9mo llmo pnecedentibus duobus conjunctis singulo long- 

 ioribus et latioribus. Long. -10. 



One specimen from Sta. Barbara, and one from Sta. Cruz Island, California, 

 collected by Mr. C. M. Bache. As stout in form as E. p u n c t u 1 a t u s, but 

 readily distinguished by the smaller size and different proportion of the joints 

 of the antennae ; the third joint is equal to the fifth, the fourth is somewhat 

 shorter ard about equal in length to the sixth ; the seventh and eighth are 

 each equal to the sixth ; the ninth, tenth and eleventh are about equal in size, 

 and broader than the preceding joints, each one is longer than the seventh 

 and eighth united, and the three together are about equal in length to the 

 joints 2 8 united. 



5. E. granulatus, rufescente-fuscus, pube brevi sericea vestitus, sub- 

 opacus, subtiliter dense granulato-punctatus, thorace latitudine plus duplo 

 breviore, lateribus et angulis rotundatis, disco obsolete canaliculato, versus 

 apicem, et ad medium vage transversim impresso, elytris thorace haud latior- 

 ibus ; c.ntennis testaceis articulis 4 et 5 a?qualibus, 6, 7, 8 aequalibus mi- 

 noribus, 9mo praecedentibus 5 haud breviore. Long. -20. 



One specimen, collected in Florida by Dr. J. G. Cooper. Quite, distinct 

 from all others known to me, by the upper surface being finely granulated ; 

 the antennae are very nearly as in E. m a r g i n i c o 1 1 i s, but the third joint is 

 one-half longer than the fourth, the fourth and fifth are equal, and together 

 are as long as the sixth, seventh and eighth ; the ninth is fully as long as the 

 five preceding united. The form is less elongated than E. marginicol- 

 1 i s, and is even a little stouter than E. mollis. 



6. E. m a r g i n i c o 1 1 i s. Anobium marg. Lee, Proc. Acad., 1859, 87. 



One specimen, Oregon. Of much more elongate form, and readily distin- 

 guished by the joints of the antennae, 3 5 being equal in length, 6 8 

 shorter, (the seventh being very slightly longer than the others) scarcely 

 longer than their width, the ninth as long as the five preceding united, 

 and but slightly broader ; tenth and eleventh each equal in length to the 

 ninth. The thorax is narrower than the elytra, the sides broadly mar- 

 gined, the angles rounded, the disc vaguely impressed in front, and feebly 

 channelled behind ; the elytra are very finely punctulate, the prosternum is 

 less abbreviated than in the preceding species, and the fifth joint of the tarsi 

 somewhat shorter. 



7. E. t e n u i c or n i s, modice elongatus, fuscus, nitidus, dense pallide pu- 

 bescens, capite thoraceque fere opacis , confertim granulatis, hoc latitudine 

 duplo breviore, antrorsum angustiore, lateribus valde rotundatis angustius 



1865.] 



