1 50 Miscellaneous. 



cystise is soon divided by a septum, and if at this moment it did not 

 rise above the epidermis, it would be impossible to say decidedly 

 whether it was a cystia or a spiracle in course of development. But 

 afterwards the two cells of the cystia each divide into two others, 

 forming four cells, which by a further subdivision are converted into 

 the eight elements composing the perfect organ. 



All the stomata of the lower surface of the leaves, and those of the 

 stalk, give f)laoe in this manner to cystiae, whilst the transformation 

 only takes place in the minority of those placed on the upper surface 

 of the leaves. Thus nature makes use of an organ already existing to 

 form a new apparatus. — Comptes Uendus, ISth June 1855, p. 1291. 



Description of a new Tcmager of the Genus Calliste. 

 By Philip Lutley Sclater, M.A. 



Calliste ventjsta, Sclater. C. Icete cfemleo-viridis : intersca- 

 pulio alis cmidaipie nigris, eodem viridi liinfjatis : /route, loris, 

 yula snmma et auchenio nigris : pileo Jaterihusfpie capitis flavis : 

 ventre medio crissofpie pcdlide ochraceis : rostra nigra : pedibus 

 puUidis. 



Long, tota 4'5 ; alee 2'5 ; caudse 1'5 poll. Angl. 



Hab. In Nova Grenada et in rep. Equatoriana provincia Quixos. 



I have been acquainted with this pretty Calliste for some time, 

 but have always considered it as the xaathocephala of Tscluuli, and 

 have desci'ibed it as such in my " Synopsis of the genus Calliste'''' in 

 the Contributions to Ornithology. But having lately had the oppor- 

 tunity of examining Tschudi's type specimens in the Neuchatel Mu- 

 seum, I find that his Callospiza xanthocephala is not this bird, but 

 the same as my Calliste lamprotis (Cont. to Orn. 185 1 , p. Q^)). That 

 species closely resembles the present, but may be distinguished by its 

 orange cap and brilliant golden-yellow ear-coverts. 



The extreme inaccuracy of Dr. Tschudi's figure, which looks more 

 like this species than the other, must be my excuse for comniitting 

 this error, in which however I am not alone, as even in the Berlin 

 Museum (where Tschudi's types ought to be known) I have observed 

 the present bird called xanthocephala. 



I\Ir. Gould's collection from Quixos contained examples of this 

 species. My own specimens are from Santa Fe di Bogota. — Vroc. 

 Zoal.Soc., Nov. 14, 1854. 



On the Spermatophora of the Crickets. By C. Lespes. 



In the Crickets the ejaculatory canal docs not turn back as in 

 nearly all insects to form the penis. During copulation, which is 

 accom])anlcd by some singular manoeuvres, the male introduces into 

 the vulva of the fcmali; the extremity of a small apj)aratus which 

 contains a drop of the seminal fluid. This spermatojihore consists of 

 a small horny vesicle, and of a slender, flattened appendage ; the 

 latter is the only part that penetrates into the vulva, in the course 

 of a few hours the female dro])s the whole apparatus. 



As soon as the male has lost one of these spermatoj)hora, a new 



