18 BULLETIN 15, UNITED STATES NATIONAL MUSEUM. 



These measurements may be eoutrasted with those of the uormal male of S. vylin- 

 drica from Prevesa, drawn lo the same scale: 



That of the ■winged aud ocellated male bcinp 



That of tlie wingless aud inmcellated female being 



Long. Wide 



, The anomaly is carried still further in the Ceylonese S. i'(V/(7aH.s, of which I have 

 only seen two female 8i>ecimens, one of which hail fully developed wings and ocelli, 

 whilst the other was wingless, but possessed ocelli. But the anomalous characters 

 of the genus are not contined <o the females, since Sir S. S. Saunders captured a 

 Aviugless male provided with slender antenna' and with three large ocelli, but en- 

 tirely destitute of wings. 



Mr. Haliday's observation on liis Labolips innu2)tH is the only case 

 bearinfj' directly upon partlienogeusis m tlic Proctotrypidir, known to 

 me. lie found the ovaries form each an oblate spheroid, entiiely cov- 

 ered with regular small i>rotuberauces, as if they were composed of an 

 agglomeration of globidar cells; the sei)arate oviducts, in the short 

 axis of the ovary, of considerable volume, and nearly as long as the 

 transverse diameter of the ovary, united into a short excretory canal; 

 no seminal receptacle was discovered, while in both si)ecimens exam- 

 ined there was apparently a malformation of the malpighian vessels, so 

 that he could not determine their number witli absolute certainty. 



Mr. naliday considered the form of the ovaries without a parallel 

 among the rest of the Hymeuoptera, and the absence of a seminal re- 

 ceptacle, if his observation could be depended upon as exact, most sin- 

 gular, as this appendage is found in form even in the agamous Cynipidie. 



TRANSFORMATIONS OR LIFE HISTORY. 



TIIK KGGS. 



The eggs of the Proctotrypids known to me are ovate or oblong in 

 shape, with a more or less distinct peduncle at one end, and agree well 

 iu general with many in the family Ichneumonidjr, although those in 

 the subfamily Platygasterina^, on account of the longer peduncle, more 

 closely resemble those in the family (Jynipida\ 



EMUHYOLOtaCAL DEVELOP.AIENT. 



Ganin,' 1869, was the first biologist to study the embryological de- 

 velojunent of certain proctotryj)ids — Platygaater, Teleas, etc., while an 

 American biologist, Prof. Ayers,^ has given the embryological de- 

 velopment of a Scelionid, in his paper entitled '' On the Development 



' Ueber der EmbryonalhUlle der Ilymenopt. und Lepidopt. Embryonen, St. Pe- 

 tersburg, 1869. 



-Mem. Boston Soc. Nat. Hist., vol. in, 1S81. This insect is not a true Ttleas and 

 is either one of two insects described in this memoir, viz., Cacus acanthi or Barij- 

 conm (xcanthi. 



