April i.-)(jo.] 



PSYCHE. 



41 



hiaiicheil) second longitii Jin;il vein, 

 imd eyes separated by a broad front. 

 Within the genns, the new form agrees 

 vvitli bilobata Low and vosemite O. S. 

 in possessing a cross vein between 

 veins 4 and 5. and finally resembles 

 bilobata in having the sub-marginal 

 cell sessile. But it dltlers from bilobata 

 (as from all other Blepharoceridae) in 

 having the radial sector springing from 

 two roots (the base of the second longi- 

 tudinal vein forked) so that a small tri- 

 angular cell is formed behind Ivj (first 

 longitudinal vein). 



The onh' other Blepharoceridae so 

 far known from the Pacific Coast are 

 Blepharocera aiicilla O. S. (Cali- 

 fornia) and Lipo)ieura yosemite O. S. 

 (Yosemite Canon, Calit'ornia), from 

 both of which the new species differs 

 sharpiv in the character of the eyes and 

 venation. 



Unfortunately I have not been able 

 vet to find the immature stages of the 

 new species, so can add nothing to our 

 incomplete knowledge of the interest- 

 ing life-history of the members of the 

 family. 



One of the moot points regarding 

 the biology of the Blepharoceridae is 



tliat of the dimorphism of the female. 

 I have elsewhere* referred to Fritz 

 Mailer's statement that there are two 

 kinds of females of Paltostoma torreii- 

 tiiim (Brazil), one kind possessing 

 mandibles and being blood-sucking, 

 the other kind having no mandibles 

 and being nectar-sucking. Osten 

 Sacken deems the evidence of dimor- 

 phism insufficient. Of twenty-three 

 females of Blepharocera capitata 

 Low taken by me at Ithaca, N. Y., 

 no one was without mandibles, nor 

 was there any other difference appar- 

 ent. Most of these specimens were 

 taken just as they were issuing from 

 the pupal skins on various days, in 

 various parts of the stream, so the crit- 

 icism that one kind of female might 

 possess habits rendering it more likely 

 to be caught than the other, will not 

 hold in this instance. It seems to me 

 probable that there is no dimorphism 

 of the females of Blepharocera capi- 

 tata Low. In the case of the new 

 Californian species I can only say that 

 both females (the only ones so far 

 taken) agree in possessing mandibles, 

 and in all other characters. 



PROCEEDINGS OF THE CLUB. 



12 Ianiary, 1900. The 2iitli regiiku- and 

 23d annual meeting (since incorporation) 

 was held at 156 Brattle St., Mr. W. L. W. 

 Field in the ch.-iir. 



Reporlb from the several officers were 

 received and the following officers elected 

 for the ensuing year: — President, J. W. 

 Folsom; secretary, Roland Hayward; treas- 

 urer, Samuel Henshaw; librarian, Samuel H. 

 Scudder; members at large of the executive 

 committee, A. S. Hewins and A. P. Morse. 



The address of the retiring president. 

 A. G. Mayer, on the mating instinct in 

 moths was next read. (See Psyche for Feb- 

 ruary.) Much discussion followed, in which 

 all present participated. 



Mr. W. L. W. Field spoke of a cocoon of 

 Sainia cynthia which he had seen contain- 

 ing two pupae. In outward appearance, 

 however, it showed no apparent diflerence 

 from a normal cocoon of that species. 



''Kellogg, loc. cit. 



