294 Mr. M. Burr's Observations on 



narrowed. G. inca, Burr, has the insertion of the anterior 

 coxae by no means contiguous, though the prosternum is 

 somewhat narrowed. 



This narrowing of the prosternum appears to accom- 

 pany the apically dilated abdomen, for we find it in 

 Chelidura aptera, Char p., Ch. dilatata, Lafr., althovigh 

 not so pronounced, and the coxa:^ are far from contiguous. 



In the remarkable genus and species, Gonolabina 

 huhlgatzi, Verb., this narrowing is very marked, but yet 

 the abdomen is not strongly dilated ; it is broadest in 

 the middle, though not very noticeably so. 



In characterizing the Gonolahidie, Verhoeff says, " Pygi- 

 dium mit der 10. Dorsalplatte des Abdomens voUig 

 verwachsen " (in which character they approach the 

 ApachyidcV). 



In Gonolahis itself there is no pygidium ; Verhoefif's 

 characterization is not clearly expressed, for he mentions 

 the form of the pygidium in his characterization of the 

 family, though in the typical genus Gonolahis, in his own 

 words, the pygidium is " steil abfallend " ; he is also in- 

 correct in saying, " Zange des $ symmetrisch " ; in G. 

 Idrhyi, Burr, the forceps are asymmetrical, as in Anisolahis 

 maritiwM. 



Gonolabina is a very curious genus, though Verhoeff 

 fails to separate it readily from Gonolahis. It is in fact 

 very distinct. The last segment of the abdomen of the 

 $ is very curious in form, being strongly depressed 

 between the forceps, forming an edge at the conjunction 

 of the dorsal and ventral plates, and this part is strongly 

 pubescent; the edge itself is furnished with two small 

 tubercles, which apparently represent the pygidium. In 

 the $ the pygidium takes the form of a blunt cone, 

 and only in this sex is there a faint transverse line 

 which indicates the point of fusion of the pygidium with 

 the segment. 



Verhoeff makes no references to the antenna? ; except 

 that they have 19 segments; the 1st segment is very 

 large, the 2nd extremely small ; the 3rd nearly as long as 

 the 1st, the 4th hanlly longer than the 2nd, the 5th a 

 shade longer, the 6th sliglitly longer than broad, and 

 onwards they gradually increase in length ; I count 20 

 segments. 



The head is black, and the mouth parts brown ; the 

 antennae dark-brown, and the eyes prominent and white. 



