570 E. B. BRANSON 



numerous, and are usually of larger size than those of the skull, 

 while two nearly complete clavicles and one interclavicle were 

 obtained. The fragments of ribs and limb bones are small, and are 

 referred to Labyrinthodonts with some doubt. 



The best material known is two skulls collected by Mr. Brown 

 from the same locality as that mentioned above. The skulls were 

 found closely associated, one slightly overlapping the other. They 

 represent two species here described as Anaschisma browni and 

 Anaschisma brachygnatha. For convenience in the general descrip- 

 tions, the skull of the former species is designated as A, and that of 

 the latter as B. 



In A most of the left maxillary, the lower part of the left quad- 

 ratojugal, the left condyle, part of the posterior end of the parasphen- 

 oid, part of the outer end of the right exoccipital, a small portion of 

 the posterior margins of the epiotics and prosquamosals,. and the 

 right opisthotic are missing. In B most of the right maxillary, part 

 of the right premaxillary, part of the lachrymals, the condyles, and 

 the upward projections of the exoccipitals are not present. About 

 8 cm of the anterior end of the left mandible of A is broken away. 

 The right mandible of B lacks a part of the anterior and part of the 

 posterior end of the dentary, and also most of the surangular. 



The skulls were incased in a hard matrix of arenaceous shale, 

 and had been broken in many pieces. This matrix has been removed 

 in the laboratory with considerable labor, and both skulls now present 

 the outer surface of all of the bones. 



The inner surface of most of the bones was examined by the 

 writer, but has necessarily been concealed in the restoration of the 

 skulls. Nearly all of the sutures were distinctly traced either on 

 the inside or on the outside of the bones. The skulls are but little 

 distorted. 



Anaschisma, gen. nov. 



Skull large, subtriangular. Bones of the roof all deeply sculptured. 

 Frontals excluded from orbits by the junction of the pre- and post- 

 f rentals; all of the bones behind the orbits, excepting the supraoccipi- 

 tals and epiotics, elongated ; lachrymal forming part of the posterior 

 border of the nares. Opisthotics short, not coalesced with the exoc- 

 cipitals. Parasphenoid with a long, narrow, cultriform process 



