304 



REPORT OF NATIONAL MUSEUM, 1893 



RILEY, Charles V. Fiirther notes on 

 Yucca insects and Yucca pollination. 



Proc. Biol. Soc.Wash, vill, June 20, 1893, pp. 

 41-54. pi. IX. Also separate, author's edi- 

 tion. 



Supplementary to the author's previous paper 

 on " Some Interrelations of riivnts and Insects, " 

 in Tolume vil of the same Proceedings. 



Summarizes the observations of Prof. William 

 Treleaso and I). AV. Coquillet on the habits of 

 Promiba7it,aculata iniioWinatmg TuccaWhipplei: 

 also the former's observations on the habits of 

 Pronuba .lynthetica on r»cca hrevifoUa. Eecords 

 a black variety (aternma Treleaso) of Pronuba 

 macidata, confined to the gramiiii/oUa variety of 

 r. Whipplei, and extends the range oi Pronuha 

 yuccasella to the Pacific coast. Describes Pro- 

 (loxiis intricatug n. s. from Yucca giuttemalentis 

 and characterizes the hitherto unknown male of 

 Prodoxus intermedins smA thelarvse of P. colora- 

 dcnsis and P. cinereus. Ths larva of P. cinerexis 

 is remarkable in that it bears on its ventral plate 

 two stout, brown deourved horns, resembling 

 those of tlie larva of Troijosita. Mentions tlie 

 only other known instances of similar anal 

 hooks in Lepidopterous larva?, viz, in Alucita 

 Kellicottii, Fish, another Pterophorid, unde- 

 seribed, and the larva of Hadena stipata, Morr., 

 and argues that these structures, approaching 

 as they do, those which are common to many 

 boring Coleopterous larvw . are independent con- 

 sequences of habit and environment, and show 

 the relative valuelessuess of larval eliaracters 

 for taxonomic purposes. 



Reports of obsei'vatious and experi- 

 ments in tlie practical work of the 

 division. 



Bull. Div. Eiit., Xo.SO, U.S. Dcpt. Aijric. 

 AYashington, June, 1893, pp. 1-67. 

 Contains the reports of the field agents of the 

 Division of Entomology, with letter of trans- 

 mittal and introductory summarj' by C. V. Riley. 



Report on the Department of Insects 



in tlie V . S. National Museum, 18ti0. 



Rep. Smithsonian last. (U. S. Xat. Mus). 18t0 

 (1891), pp. 219-221. 



RILEY, Charles V., and HOWARD, L. 

 O. The first larval stage of the Pea 

 Weevil. 



Insect Life, iv, Xo. 11-12, August, 1892, p. 

 392. 

 The pea weevil, as well as the bean weevil, 

 passes through a post-embryonic stage, during 

 which it posses.se8 false legs, which are after- 

 wards lost. 



On the nomenclature and ovii)osition 



of the Bean Weevil. 



Insect Life, v. 'So. 1, September, 1892, pp. 

 27-33. 

 In Dr. Horn's revision i/f the Bruchida?, 

 the Bean weevil is given as liruchus obsolettis. 



RILEY, Charles V., and HOWARD 

 L. O. — continued. 



Say. but the authors consider that the Bean 

 weevil is distinct from obsolettis. Say found 

 obsoletus on a species of Astragalus, from which 

 he also obtained Apian segnipe.'^. 



Mr. Schwarz has found a Bruchus in connec- 

 tion with this very Apinn segnipes on Tephrosia 

 virginiana, near AVashington, and this Bruchus 

 agrees fully with Say's description of B. obso- 

 letus. All wlio have gone over the synonymy 

 carefully will admit that B. obtectus, Say, which 

 precedes B. obsoletus in the descriptions, is more 

 plainly referable to our Bean weevil. The .syu- 

 ('inymy of the species from B. obtectus Say (1831) 

 to B.subarmatus Janson (1889) is given. Its 

 habits of oviposition in the field are discussed, 

 and it is found that the eggs are invariably 

 placed in the ])od. 



— The Australian enemies 

 and black scales. 



)f the red 



Insect Life, v, Ko. 1, September, 1892, pp. 

 41-43. 

 Eecords the observations of Mr. D. W. Coquil- 

 let on the condition of Orcus cliahjbeus and O. 

 australasice, introduced from Au.stralia for the 

 purpose of destroying Asjndiotus auraniii and 

 Lecanium oleie. 



A curious Chrysalis. 



Insect Life, v, Xo. 2, Xovember, 1892, jr. 

 131. 

 A brief note upon the remarkable Bombycid 

 chrysalis of ,Saturnia arnobia, Westwood, found 

 by Mr. Good in West Africa. 



The Glassy-winged S h a r ji s Ii o o t e r 



{Hoinalodiaca cou<julata, Say). 



Insect Life, v, Xo. 3, Jaiuiary, 1893, pp. 150- 

 154, fig. 10. 

 From the peculiar eifect of its punctures on 

 young cotton bolls, and also from its power 

 of rapidly and forcibly ejecting minute drops 

 of liquid, this iiLsect derives its name of " Sharp- 

 shooter " in the South. A single application of 

 kerosene emulsion to young poplar growth 

 along the borders of cotton fields about the sec- 

 ond week in ^lay is recommended. 



Food-plants of North American; 



species of Bnichiifi. 



Insect Life, v, Xo. 3, January, 1893, pp. 165- 



166. 



A table of the food-plants of various species 



of Bruchus, compiled from Riley's records, those 



of the Division of Entomology, and from other 



sources. 



An interesting Water Bug (liheiima- 



tohates Bileyi, Bergroth.) 



Insect Life, V, Xo. 3, January, 1893. pp. 189- 

 193. figs. 18-20. 

 Detailed description of this curious Hydro- 

 nietriil, with figures by O. Heideman, who cap- 



