1905.] NATURAL SCIENCES OF PHILAPELPHIA. 43 



pronotum, moderate!}' curved, distal two-thirds of the dorsad and 

 distal one-third of the ventral margins serrato-dentate, apex mod- 

 erately acute. Cephalic tibiae with the auricle elongate-elliptical. 

 Caudal femora elongate, considerably inflated proximad, external 

 margin unarmed, internal margin with nine spines; tibiae ver}^ slightly 

 longer than the femora. 



General color (specimens discolored) straw yellow, traces of the origi- 

 nal apple green visible on the tegmina; tympanum of male heavily 

 marked with black. 



Measurements. 



IjCngth of body, 24.5 mm. 21 mm. 



Length of pronotum, 7 " 7 " 



Caudal width of pronotum 4.5 " 4.5 " j 



Length of tegmina, . . .' c. 33 " 32.5 " ; 



Greatest width of tegmuia, 9 '' 9 " ■ 



Length of caudal femora, 28.5 " 



Length of ovipositor, 11 " 



This interesting species is represented by a series of five specimens, 

 three females, two males, all of which are in bad condition, three having 

 lost the caudal limbs. The specimens other than the types are all 

 from Chokoloskce, Florida. 

 Miorocentrum laurifolium (LiniiiBus). 



Two specimens, male and female, from Miami represent this species 

 in the Hebard collection. They were taken on February 5 and Sep- 

 tember 12. A single female, in the collection of the Academy, was 

 taken at Miami on February 1, 1899, by S. N. and M. C. Rhoads, and 

 another male at Braidentown^ Manatee county. 



Many specimens of this species could be heard stridulating in the 

 trees after dark, but were difficult to capture. (H.) 



Microcentrum rostratum n. sp. (PI. I, figs. G and 7). 



Type: ? ; Miami, Dade county, Florida. March 16, 1903. [Heb- 

 ard collection.] 



Allied to M. lucidum Brunner, from Brazil, from wh^'ch it differs in 

 the triangularly produced mcso- and metasternal lobes, and the less 

 rotundate character of the tegmina. The new form can readily be 

 distinguished from the other North American species by its much 

 smaller size and the peculiar fastigium. 



Size small; form as usual in the genus. Head but slightly punctate 

 dorsad; occiput and vertex deplanate, moderately declivent; fasti- 



