no. i. BOMBYCINE MOTHS OF NORTH AMERICA— PACKARD. 267 



Both these forms of walJceri X ricini hybrids may be distinguished from walkeri by the 

 bodies of both sexes being more white. The body of ricini male is wholly white and the female 

 nearly so except that the sides have buff-colored spaces between the tufts of white. I have 

 crossed these hybrids in both forms and both sexes with walJceri and ricini again; and the progeny 

 which are fertile are f walkeri and \ ricini, and others £ walkeri and f ricini are again fertile; 

 I have progeny from J ricini X £ ricini and f walkeri X f walkeri and again } ricini X walkeri 

 and vice versa. The walkeri X ricini hybrids pair together freely and are very fertile. 

 The Agricultural Research Institute of Pusa, Bengal, from these primary crosses of mine have 

 selected two races which produce rusty red cocoons and white cocoons and by selfing these have 

 now two distinct races for distribution amongst the Eri silk rearers of India. — J. H. Watson.] 



[Since writing the above, Mr. Watson has reared a new hybrid, P. walkeri advena 



6* X pry eri 9 , which he calls pryadvena; also one with the composition ( — . . . ) 



o" X pryeri 9 , which he calls hybr. lefroyi.] 



CALLOSAMIA PROMETHEA X SAMIA GLOVERI. 



Young larva. — Looks so far as I remember like promethea. Head black ; a white line across 

 front, and labrum white; setre.all black, tubercles livid black; hind edge of prothoracic segment 

 black, forming a wide black band ; meso- and meta-dorsal tubercles black. Abdomen with dorsal 

 tubercles yellow like body, each segment with front and hind edge black, the black band in 

 front scalloped on binder edge. 



Received from Miss Soule. Hatched June 20, 1901. 



SAMIA CECROPIA 9 X S. GLOVERI S . 



Larva. — Length 60 mm. Head yellowish green; body bluish, glaucous, green; a decided 

 bluish tint. Prothoracic plate greenish, the four tubercles on it black, the two on each side 

 turquoise, pale toward end, black at base as on all the other tubercles, i. e., those of the two 

 lateral rows. Those of the two dorsal rows to and including abdominal segment are straw 

 yellow, as is also the median tubercle on eighth abdominal segment. In all the tubercles the 

 spinules are black; one (right one) of the tubercles on suranal plate is black (diseased). 



Abdomen and thoracic legs apple green. Spiracles [with] a fine black ring. No red 

 tubercles! no green tubercles! Compared with my description of normal cecropia the pro- 

 thoracic dorsal tubercles are black not "blue." 



Six thoracic dorsal tubercles are straw yellow, not "reddish," but abdominal dorsal ones 

 are as in my description of normal cecropia, yellow, including median one of eighth segment. 

 Tubercles of two lateral rows are "bright blue," i. e., turquoise, rather pale as in normal cecropia. 

 The tubercles on ninth segment as in normal cecropia, blue, and so are all the feet. 



Food, wild cherry. Received from Joutel, July 26, 1901. 



SAMIA CECROPIA J X S. COLUMBIA 9. 



Larva. — Plate V, fig. 3. 



PARASITES. 



HYMENOPTERA. 

 ichnuemonim:. 



[Especially characteristic are certain members of the tribe Ophionini, which has recently 

 (Trans. Am. Ent. Soc, 1912) been revised by Mr. C. W. Hooker. The species reported from 

 Saturniidse (s. lat.) are as follows: 



(1) Eremotylus arctise (Ashmead). From Automeris io (cf. Ashmead) and Callosamia 

 promethea (cf. Felt). 



(2) Eremotylus macrurus (L.) (Ophion macrurum auctt; 0. cecropise Scudder), from Auto- 

 meris io (cf. Felt), Callosamia promethea (cf. Webster), Samia Columbia (cf. Felt), S. cecropia 

 (cf. Hooker), Telea polyphemus (cf . Schulz, Zool. Ann alen, IV), Philosamia cynthia (cf. Hooker). 



