1880], 247 



the Hedjaz district of Western Arabia an allied species, and as it is 

 very easy to recognise, I have thought it expedient to give it a name 

 and characterize it. 



Caetallum thoeacicum, n. sp. 

 A.ngustulum, nigrum, thorace sanguineo, elgtris viridihiis ; antennis, 

 tarsis, tiliisque anterioribus rufo-tesfaceis, illis articulo hasaJi nigro ; 

 thorace sparsim irregulariter punctato ; elytris setis erectis pallidis 



parcius adspersis, fortiter punctatis. 



Long. 6| — 9 mm., lat. \\ — 2\ mm. 



The species is at first sight exactly similar to C. ehuUnum, it has, 

 however, the prothorax above and below entirely red, and its upper 

 surface only sparingly punctured ; the punctuation of the head is also 

 much less dense and regular ; the elytra are more coarsely punctured ; 

 and the front of the head is shorter, so that the antennae are inserted 

 nearer to the base of the mandibles : the thorax is more cylindrical, 

 the angular prominence at the side, so conspicuous in C. ehulinum, 

 being in C. thoracicum scarcely represented. The sexes show similar 

 differences to those of G. ehulinum. 



Found by Dr. Millingen near Jeddah. 



Thornhill, Dumfries : 



February 28th, 1880. 



NOTES ON TENTHREDINID^ AND CTISIPIBM. 



BY P. CAMEEON. 



(Continued from j)age 224). 



Since writing the remarks on Allantus, Mr. J. B. Bridgman has 

 sent me a species which he had from the late Mr. P. Smith as zona^ 

 but it is not the true zo7ia ; it is a variety of viennensis, with the pos- 

 terior tarsi and apex of tibiae blackish, instead of reddish. In this 

 variety (at least, in this country) the yellow bands on the 4th and 5th 

 segments are fuller than in the common form. The form with black 

 tarsi is not uncommon apparently in Germany, but does not occur in 

 Scandinavia. It has generally a distinct yellow splash on the side of 

 the 6ih abdominal segment, but it may be absent. I suspect that A. 

 succincfus was founded on this form of viennensis ; any way, it has no 

 connection with zona, Klug, although it would appear to have passed 

 current in this country for it. 



With reference to A. cinguJum I would remark, that the words in 

 the table on p. 221 — " the 5th and 6th segments yellow all round " — 



