no 



[October, 



And this abdominal structure is repeated to a certain extent in the 

 aquatic condition of Bcetisca ohesa, which presents many of the same 

 characteristics as Prosopistoina. 



Oniscigaster Wakepieldi. 



O. sifj)ra nigro-fiisca ; tlwrace nitido ; ahdomine indisfincfe 



pallido - vario, infra Jia- 

 vido, nigro-punctato, seg- 

 mentis singulafim maculd 

 magna nigra utrinque sig- 



natis : caudce flavo-alhidcB. 

 Pedes flavi, late nigro- 

 annulati. Alee vitrece, an- 

 ticarum dimidio hasali ef 

 posticis omnino Icete fuligi- 

 nosis : venae venulceque ni- 

 grce ; Ji is ad anticarum mar- 

 ginem costalem valde incras- 

 satis, nigro-marginatis et 

 suffusis : humeris nigris t'lel 



Terminal segments of abdomen viewed from beneath. nigrO-JUSClS. 



Long. Corp. (sine caudls) 10'" (= 21 mill.) ; exp. alar. 19'" (= 40 mill.). 

 I have examined two female images. 



Lewisham : September, 1873. 



DESCRIPTION OF A NEW SPECIES OP LUCANID2E. 

 BY CIIAS. O. WATEKHOUSE. 



CuiAsooNATnus PUBEscExs, sp. nov. 



^. Castaneiis, nitidus, a-Jieo-micans, griseo-piihescens, conuexiiis- 



culus ; liblis anticis exfiis hi-spinosis, intus 2 vel 3 denticidatis, inter- 



mediis rectis vix unidenticidatis, posticis reef is mi/ticis ; anfennis 



tarsisque nigris. 



Long, (inandib. exchisis) 14 lin., mandih. 3 lin. 



Closely resembling C. prionoides, but at once distinguished by 

 the more depressed form, the more slender legs, and the colouration 

 of the tibiap, which are, moreover, not curved. The mandibles are as 

 in C. prionoides ; the anterior angles of the head are less prominent 



