OF NATURAL HISTORY. 747 



[Continuation from Boston Journal of Natural lliatorv, vol. 1, Mav, lai: 

 No. 4, pp. 3C1 — lie] 



MKRLV ,)ur. 



M. COSTATA. — 9 lilack ; tciiruiii with yellow Imiuls and two 

 spots. 



Inhabits Tiuliaiia. 



liody black: head above the anteniife with a traii.'svcr.MC lino, 

 slightly interrupted in the middle, an orbital lino, and .short line 

 behind the eyes, yellow : mandiblo.s pioeous : thorax with two 

 transverse spots before, a small, triangular one above the wing- 

 scale, a transverse one behind the scutol, and a bilobed one each 

 side behind, yellow ; each side of the niidille of the thorax are 

 two abbreviated, somewhat oblif|ue, impressed lines : metathorax 

 with a double yellow longitu<liiial side and obvious transverse 

 rugie : pleurae with a triangular spot under the superior wings, 

 a sm ill obKujue line over the intermediate! feet, yelhtw : winL's 

 with a brown costal margin : tergum [362] with a yellow band 

 on the middle or before it, of each segment, excepting the last ; 

 the second band interrupted into two transverse, oval spots : 

 venter with a longitudinal, lateral spot on the .second segment 

 and a transver.se lateral one on the third, yellow; tarsi and in- 

 termediate and posterior pairs of tibiae piceous; a yellow spot 

 on the posterior coxae. 



Length half an inch. 



Var a. Middle of the thorax with a small double yellow spot. 



The observations which I had occasion to make relative to the 

 generic affinities of Phsid marijlnnta nob., are exactly applica- 

 ble to this species. It agrees precisely with J urine's character 

 of P/rsia, but differs from Mizine Latr. by having tlie mandibles 

 entirely d stitute of teeth, a character which it h;LS in common 

 with Mcria 111., but the form of its wing-scale, will not admit of 

 its being referred to the latter genus; I have, however, in this 

 instance, been guided by the characters laid down by I^trcillo 

 in the R6gne Aniniale (first Edition). 



2. M. MAR(nN.\T.v. — Phsla numjiunta nub., \\ e.stern (juur- 

 terly Reporter. 

 1835.] 



■^sss=^====SSSi^S^^^^am^tm 



