Vm MONTHLY PROCEEDINGS 



D. cribripennis n. sp. — Black, moderately shining, elytra bluish or greenish 

 more or less metallic, narrowly margined with orange-yellow. Head coarsely and 

 deeply, more or less continently punctured. Thorax coarsely transversely plicate 

 by the confluence of the punctures, surface irregular, bronzed. Elytra very coarsely 

 and deeply punctured, the punctures near the apex very little smaller. Scutellum 

 and a small sjjot each side black. Body beneath and legs finely and moderately 

 densely jiunctured, the abtlomen less densely at middle. Length .48 % — .72 9 iuch ; 

 12—18 mm. 



The sexual characters are as in the preceding species but less marked. 

 Collected by Mr. Morrison in Washington Territory. 



Dr. Horn stated that some time ago he exhibited females of these and 

 supposed them merely instances of dimorphism. He was glad to be able 

 to correct his own mistake and place the species in their proper light. 



Desmocerus now contains four species, three of Avhich belong to the 

 Pacific fauna, they are as follows : 



Elytra at basal half yellow, apex blue, disc finely tricostate, {elongatus BL). 



palliatns Forst. 

 Elytra either entirely yellow or margined with yellow, not costate. 



Male elytra orange-yellow, female with discal blue space, i)unctuation moder- 

 ately coarse, a little finer near apex aureipeiiiiis Chev. 



Elytra similarly colored in the sexes, both narrowly margined with yellow at 

 sides and base. 

 Thorax irregularly jilicate, elytra coarsely aud deejily punctured from base 



to apex cribripennis Horn. 



Thorax densely punctured, regularly convex, elytra moderately coarsely i)unc- 

 tured at base, more finely and densely at apex caliTornicnS Horn. 



The last three are the Pacific species and all are found on the flowers 



of Elder ( Samhucus). 



The following additions to the Library of the American p]ntomological 

 Society were announced : — 



Proceedings of the Zoological Society of London, LS8(I. Part 3. 

 From the Society. 



Journal of the Linnean Society of London, Nos. SO — SH. From 

 the Society. 



Entomologist's Monthly Magazine, No. 202. From the Conductors. 



Canadian Entomologist, vol. xiii, No. 2. From the Editor. 



American Naturalist, vol. xv, Nos. 1 and 2. From the Editors. 



Journal of the Royal Microscopical Society, Series ii, vol. i, Part 1. 

 From the Society. 



Psyche, vol. iii. No. 78. From the Editors. 



Orange Insects ; a treatise on the Injurious and Beneficial Insects 

 found on Orange Trees of Florida, by W. H. Ashmead. From the 

 Author. 



