September 1S92.] 



PSYCHE. 



323 



nish their full quota of mvrmecophiles. 

 The capture of numbers of Araeoschi- 

 zns armatus in an anthill at Green 

 River. Wvo. has already been recorded 

 by me (Ent. amer.. v. 6, p. 84) and 

 quoted by Mr. Schwarz in his paper 

 cited. Though Dr. Horn holds that 

 Araeoschizus is neither parasitic nor 

 iniquiline, the fact remains that they 

 are much more abundant in and around 

 ant's nests. 1 noticed this especially at 

 Tuscon in the case of three species (A. 

 regularise jimbriatus and simplex) 

 which I found there in considerable 

 numbers. 



Notibius puberulus is often found in 

 ant's nests or in the immediate vicinity. 



At Fort Yuma I have noticed them 

 running across ant hills or around the 

 entrances to the underground galleries 

 without the interference of the ants ; 

 near Los Angeles while at work with 

 Mr. Coquillet we dug up a large nest 

 and found in it, besides some specimens 

 of Notibius puncticollis, a number of 

 Conibius elongatus and Eurymeto- 

 pon convexicolle. I think it quite 

 possible, considering that nothing is 

 known of the early stages of these 

 beetles, that they may breed in the 

 nests, though it is also likely that they 

 may use them simply for shelter just as 

 Eleodes dispersa uses the holes of 

 prairie dogs. 



ADDITIONAL NOTES ON BOMBYCID LARVAE. 



BV HARRISON G. DYAR, BOSTON, MASS. 



Halsidota alni Hy. Edw. 



1876 — Hy. Edw.,Proc. Cal. acad. sci.. vii, 

 129 (as a variety of//, agassizii*). 



18S2 — Grote. New check list, p. 16. 



1891 — Smith, List, lep., no. 1129 a. 



Mature larva. — Head rounded, smooth, 

 black and very shiny; bases of antennae, 

 labium and a line below clypeus vellow; 

 width 3.5 mm. Body black, mottled with 

 yellowish, which predominates ventrally; 

 abdominal feet dull yellow, the claspers 

 brownish; thoracic feet black; spiracles 

 white. The warts are arranged as in H. 

 maculata* and bear dense, spreading tufts of 

 feathery hairs of even length, but slightly 

 longer dorsally on joints 5 and 12. and 

 keeled along dorsal line. On joints 2-6 and 

 10-13 the hair is deep black, on joints 7-9 

 orange ochraceousf. In the black parts at 



* See Psyche, vol. 6, p. 165. 



t Ridgvvay's Nomenclature of colors, pi. v, fig. 3. 



both ends are several long, thin, white pen- 

 cils, consisting of from one to several hairs 

 and arranged as follows: — on joints 3 and 4 

 from warts 2-5 ; on joint 5 from warts 1-5 ; 

 on joint 6, a single hair from warts 3 and 4; 

 on joint 10 a single hair from warts 2-4; on 

 joint 11 from warts 2, 3, and 5; on joint 12 

 from warts 1 and 2 and on joint 13 from the 

 large wart and the lateral one. 



Food platits. — Willow (Salix) and alder 

 (Alnus). 



Habitat. — The Sierra Nevada range of 

 California and probably further north. Mr. 

 Edwards's example came from Shasta Co., 

 mine from Mariposa Co. 



Halisidota agassizii Pack. 



1S64 — Packard. Proc. ent. soc. Phil., v. 3, 

 128. 



1S73 — Stretch, Zyg Bomb. N. A. v. 1, 103 



1SS9.— Hy. Edw., Bull. no. 35, U. S. nat. 

 mus., 62. fr. var of maculata 



1S91 — Smith, New list, p. 27. maculata. 



